Sensus Metering Systems FLEXELS Radio Telemetry Module User Manual FlexNet Module for the Elster A3

Sensus Metering Systems Inc. Radio Telemetry Module FlexNet Module for the Elster A3

Manual

RevisionsThis document contains proprietary information. It is to be used only for the purpose for which it is intended. Information in this document is subject to change without notice and does not represent a commitment on the part of Sensus Metering Systems-North America, Inc. No part of this publication may be reproduced, transmitted, stored in a retrieval system, or translated into any language in any form by any means, without the written permission of Sensus Metering Systems Inc.© Copyright 2008, Sensus Metering Systems Inc. All Rights Reserved.FlexNet® and associated logos are trademarks of Sensus Metering Systems Inc. and its subsidiaries and affiliates. All other brand names may be trademarks of their respective owners.Sensus Metering Systems1501 Ardmore Boulevard, Suite 601Pittsburgh, PA 15221 USA1-800-METER-IT (638-3748)1-800-888-2403 (fax)www.sensus.comDocument:SmartPoint Module for the Elster A3 MeterDocument Number:ECMTM40000Rev No. Date DescriptionRev 1 6/26/2008 Updated for hardware and firmware updates to SmartPoint Module.
Table of Contents iSmartPoint Module for the Elster A3 Meter ECMTM40000Table of Contents1 Introduction ........................................................................................................................ 1-11.1 Purpose ..................................................................................................................................... 1-11.2 Safety ........................................................................................................................................ 1-12 SmartPoint Module Overview............................................................................................ 2-12.1 FlexNet SmartPoint Assembly .................................................................................................. 2-12.2 Labels ....................................................................................................................................... 2-12.2.1FCC Label ......................................................................................................................................... 2-12.3 FlexNet System Overview ......................................................................................................... 2-12.3.1Description of Operation ................................................................................................................... 2-12.3.2FlexNet AMI Local RF Network ........................................................................................................ 2-22.3.2.1 Meter Endpoints ..................................................................................................................... 2-22.3.2.2 Tower Gateway Base Station ................................................................................................. 2-32.3.3FlexNet AMI Regional Network Interface ......................................................................................... 2-33 On Air Message Format ..................................................................................................... 3-13.1 Field Definitions ........................................................................................................................ 3-13.1.1Message Leader ............................................................................................................................... 3-13.1.2Sync .................................................................................................................................................. 3-13.1.3Meter ID Number............................................................................................................................... 3-13.1.4Customer ID ...................................................................................................................................... 3-13.1.5Control............................................................................................................................................... 3-23.1.5.1 RF Sequence Number............................................................................................................ 3-23.1.5.2 AC Power Fail......................................................................................................................... 3-23.1.5.3 Battery Low............................................................................................................................. 3-23.1.5.4 Power Restore........................................................................................................................ 3-23.1.5.5 Payload Encrypted ................................................................................................................. 3-23.1.6Length .............................................................................................................................................. 3-23.1.7Repeat Level / Status ....................................................................................................................... 3-33.1.8Application Sequence ....................................................................................................................... 3-33.1.9Application Code ............................................................................................................................... 3-33.1.10Application Data .............................................................................................................................. 3-33.1.11CRC ................................................................................................................................................ 3-33.2 On Air Time Requirements ....................................................................................................... 3-33.3 Addressing ................................................................................................................................ 3-43.3.1Command Addressing....................................................................................................................... 3-43.3.2Broadcast Addressing ....................................................................................................................... 3-43.3.3Group Addressing ............................................................................................................................. 3-43.3.3.1 Group Addressing, Preferred Method..................................................................................... 3-43.3.3.2 Group Addressing, Legacy Method (deprecated)................................................................... 3-44 On Air Message Types....................................................................................................... 4-14.1 On Air Message Types ............................................................................................................. 4-14.2 Testing Message – App Code 220 ............................................................................................4-14.3 Meter Setup / Configuration Message—App Code 1 ................................................................ 4-24.4 Meter Serial Number/Position Binding—App Code 5 ............................................................... 4-34.4.1Message Format ............................................................................................................................... 4-34.4.2Status Flags ...................................................................................................................................... 4-3
Table of Contents iiSmartPoint Module for the Elster A3 Meter ECMTM400004.4.3Meter Serial Number ......................................................................................................................... 4-34.4.4Latitude / Longitude........................................................................................................................... 4-34.4.5Programmer ID.................................................................................................................................. 4-44.4.5.1 Setup Flags ............................................................................................................................ 4-44.5 GPS Mapping Message ............................................................................................................ 4-44.5.1Message Format ............................................................................................................................... 4-44.5.1.1 Latitude................................................................................................................................... 4-54.5.1.2 Speed ..................................................................................................................................... 4-54.5.1.3 Heading .................................................................................................................................. 4-54.5.1.4 Altitude.................................................................................................................................... 4-54.6 Command Message—App Code 7 ........................................................................................... 4-54.6.1Message Format ............................................................................................................................... 4-54.6.2Command Type................................................................................................................................. 4-54.7 Buddy Message—App Code 8 ..................................................................................................4-64.7.1Message Format ............................................................................................................................... 4-64.7.2Buddy Id ............................................................................................................................................ 4-64.7.3Buddy Fields ..................................................................................................................................... 4-74.7.4Queue Time ...................................................................................................................................... 4-74.7.5Meter Reading Fields ........................................................................................................................ 4-74.8 C&I Meter Read With History—App Code 13 .......................................................................... 4-84.8.1Message Format ............................................................................................................................... 4-84.8.2Relative Time Stamp......................................................................................................................... 4-84.8.3Delta Data Type ................................................................................................................................ 4-84.8.4Compression Enabled....................................................................................................................... 4-84.8.5Current Meter Reading...................................................................................................................... 4-84.8.6Peak Demand Reading ..................................................................................................................... 4-94.8.7Phase A, B and C Meter Voltages ................................................................................................... 4-94.8.8Compression Enabled History Samples............................................................................................ 4-94.8.9Fixed Bin Width History Samples.................................................................................................... 4-104.9 C&I Tier Data—App Code 14 .................................................................................................4-104.9.1Message Format ............................................................................................................................. 4-104.9.2Tier Information ............................................................................................................................... 4-114.9.2.1 Tier ....................................................................................................................................... 4-114.9.2.2 Sub Tier ................................................................................................................................ 4-114.9.3Meter Type ...................................................................................................................................... 4-124.9.4Selected Data Table........................................................................................................................ 4-124.9.5Data Flags / Peak Demand Time .................................................................................................... 4-124.9.6Summation Reading (103 resolution).............................................................................................. 4-134.9.7Demand Reading (100 resolution) .................................................................................................. 4-134.9.8Cumulative Demand Reading (103 resolution) ............................................................................... 4-134.9.9Coincident Reading (103 resolution)............................................................................................... 4-134.9.10# Demand Resets ......................................................................................................................... 4-134.9.11Source Indices .............................................................................................................................. 4-134.9.12Quantity of Tier Information........................................................................................................... 4-144.9.12.1 Number of Tiers.................................................................................................................. 4-144.9.12.2 Number of Sub Tier ............................................................................................................ 4-144.9.13Service Quality Message Format .................................................................................................. 4-144.10 C&I Tunneling Read—App Code 15 .................................................................................... 4-154.11 C&I Alarm Message – App Code 16 ..................................................................................... 4-164.11.1Application Data ............................................................................................................................ 4-164.11.2Voltage Phase A,B, and C ............................................................................................................ 4-164.11.3Click Count.................................................................................................................................... 4-164.11.4Time Since Event .......................................................................................................................... 4-16
Table of Contents iiiSmartPoint Module for the Elster A3 Meter ECMTM400004.11.5Current Meter Reading.................................................................................................................. 4-174.11.6Extended Time Since Event.......................................................................................................... 4-174.11.7Device Temperature...................................................................................................................... 4-174.11.8µP Status ...................................................................................................................................... 4-174.11.9Lock Errors.................................................................................................................................... 4-174.11.10Alarm Data .................................................................................................................................. 4-184.11.11Time of Last Power Failure ......................................................................................................... 4-184.11.12Total # of Outages....................................................................................................................... 4-184.11.13Flags ........................................................................................................................................... 4-194.12 Demand History Message—App Code 25 ............................................................................ 4-194.12.1Message Format ........................................................................................................................... 4-194.12.2Number of Demand Resets........................................................................................................... 4-204.12.3Last Demand Reset Date and Time.............................................................................................. 4-204.12.4Last Peak Demand Date and Time ............................................................................................... 4-204.12.5Last Peak Demand........................................................................................................................ 4-204.12.6Last Consumption Reading........................................................................................................... 4-204.12.72nd Demand Reset Date and Time............................................................................................... 4-204.12.82nd Peak Demand Date and Time................................................................................................ 4-204.12.92nd Peak Demand ........................................................................................................................ 4-204.12.102nd Consumption Reading.......................................................................................................... 4-204.13 Load Profile Metadata Message—App Code 28 ................................................................... 4-214.14 Load Profile Block Data Message—App Code 29 ................................................................ 4-214.15 Firmware Image Check Response—App Code 30 ............................................................... 4-234.16 High Res C&I Meter Read with History—App Code 38 ........................................................ 4-234.17 Generic Ping Response—App Code 48 ............................................................................... 4-234.17.1Demand Enable Status/Interval Configuration .............................................................................. 4-244.17.2TOU Enable Status/Tier and Season Configuration ..................................................................... 4-244.17.3TOU Current Year Holidays .......................................................................................................... 4-264.17.4TOU Next Year Holidays............................................................................................................... 4-264.17.5Click History .................................................................................................................................. 4-284.17.6Load Limit Status/Threshold ......................................................................................................... 4-284.17.7Advanced Voltage Quality Settings............................................................................................... 4-284.17.8TOU Auto-Push Options ............................................................................................................... 4-294.18 C&I High Res Read with History Data—App Code 55 .......................................................... 4-304.18.1Application Data ............................................................................................................................ 4-304.18.2Relative Time Stamp..................................................................................................................... 4-304.18.3Delta Data Type ............................................................................................................................ 4-304.18.4Click Count.................................................................................................................................... 4-314.18.5Current Consumption (wH resolution)........................................................................................... 4-314.18.6Peak Demand Reading ................................................................................................................. 4-314.18.7RMS Volts Phase A-C................................................................................................................... 4-314.18.8History Data .................................................................................................................................. 4-314.19 Scratch Pad Image Check Response—App Code 57 .......................................................... 4-315 Setup and Configuration ................................................................................................... 5-15.1 Electrical Configuration Interface .............................................................................................. 5-15.1.1Magnetic Loop................................................................................................................................... 5-15.1.2Optical Direct Serial Connection (optional) ...................................................................................... 5-15.2 Configurable Parameters .......................................................................................................... 5-15.2.1End Point ID ...................................................................................................................................... 5-15.2.2Meter Sample Rate ........................................................................................................................... 5-25.2.3Supervisory Transmit Rate................................................................................................................ 5-25.2.4Base Frequency Channel.................................................................................................................. 5-3
Table of Contents ivSmartPoint Module for the Elster A3 Meter ECMTM400005.2.5Transmit Frequency Channels .......................................................................................................... 5-35.2.6Receive Frequency Channel............................................................................................................. 5-45.2.7C&I Mode Channel............................................................................................................................ 5-45.2.8Priority Mode Channel....................................................................................................................... 5-45.2.9Transmit Channel Mask .................................................................................................................... 5-45.2.10Transmit Operational Mode............................................................................................................. 5-55.2.11Receiver Operational Mode ............................................................................................................ 5-55.2.12Enable Encryption ........................................................................................................................... 5-65.2.13Programmer ID................................................................................................................................ 5-65.3 Setup Messages ....................................................................................................................... 5-65.3.1Setup Messages ............................................................................................................................... 5-65.3.2Basic Command Message Format.................................................................................................... 5-75.3.3Basic Reply Message Format ........................................................................................................... 5-95.3.4Command / Reply Message Definitions ............................................................................................ 5-95.4 Send Data Commands ............................................................................................................ 5-166 Receiver Section ................................................................................................................ 6-16.1 Receiver Requirements ............................................................................................................ 6-16.1.1Operation Modes............................................................................................................................... 6-16.1.2RF Link Requirements ...................................................................................................................... 6-16.1.3Sensitivity .......................................................................................................................................... 6-16.1.4Diversity ............................................................................................................................................ 6-16.2 Receiver On Air Command Messages ...................................................................................... 6-16.2.1Command Types............................................................................................................................... 6-16.2.2Command Acknowledge ................................................................................................................... 6-26.2.3Set Static Setup ................................................................................................................................ 6-36.2.4Set TCXO Correction ........................................................................................................................ 6-36.2.5Set Latitude and Longitude ............................................................................................................... 6-46.2.6Set VoltVoltage Quality settings:....................................................................................................... 6-46.2.7Set..................................................................................................................................................... 6-56.2.8On Demand Read / Drive By Read ................................................................................................... 6-56.2.9Ping ................................................................................................................................................... 6-66.2.10Set Transmitter Id............................................................................................................................ 6-76.2.11Set Customer Id .............................................................................................................................. 6-86.2.12Set Encryption Key.......................................................................................................................... 6-86.2.13Set Preferred Buddy Id.................................................................................................................... 6-96.2.14Set Company Meter Number .......................................................................................................... 6-96.2.15C&I Read C12.19 Data ................................................................................................................. 6-106.2.16C&I Write C12.19 Data.................................................................................................................. 6-106.2.17C&I Demand Reset ....................................................................................................................... 6-116.3 Command Addressing ............................................................................................................ 6-116.4 Receiver Miscellaneous .......................................................................................................... 6-116.4.1Miscellaneous ................................................................................................................................. 6-116.4.2Polling ............................................................................................................................................. 6-11A FlexNet SmartPoint Radio Overview ............................................................................... A-1A.1 SmartPoint Power Failure Detection and Alarm ......................................................................A-1Power Fail Detection 1Power Restoration Notification 1Brown-Out Detection 1A.2 Operating Frequencies of SmartPoint/TGB Devices ...............................................................A-1Systems Operating Under Part 24 of FCC Rules
Table of Contents vSmartPoint Module for the Elster A3 Meter ECMTM40000(Narrow-Band PCS) 2Systems Operating Under RSS-134 in Canada (Narrow-Band PCS) 2A.3 SmartPoint Radio Transmit Modes ..........................................................................................A-2Normal Mode 3A.3.1.1 Staggered Transmissions .....................................................................................................A-3A.3.1.2 Poll-response Message Traffic ..............................................................................................A-3Poll/Response Mode 3mPass or “Buddy” Transmit Mode 3A.3.3.1 Buddy Mode Using mPass Transmissions ............................................................................A-5A.3.3.2 Tower mPass Buddy Mode to ORD Command Transmissions ............................................A-5A.4 SmartPoint Data Security ........................................................................................................A-6SmartPoint Radio Data Security 6TGB Data Security 6RNI Data Security 7Separation of Customer Data 7B Specifications ................................................................................................................... B-1B.1 External AC Line Power ...........................................................................................................B-1B.2 Current Consumption ...............................................................................................................B-1B.3 Power Failure ...........................................................................................................................B-1B.4 Internal Power Supplies ............................................................................................................B-2B.4.1 Micro Power Regulator ....................................................................................................................B-2B.4.2 DC to DC Converter.........................................................................................................................B-2B.5 Start Up Timing Requirements .................................................................................................B-2
Introduction 1-1SmartPoint Module for the Elster A3 Meter ECMTM400001 Introduction1.1PurposeThis manual provides technical information for the FlexNet SmartPoint module installed in the Elster A3 meter.This document is intended for technically qualified personnel of energy supply companies and their contractors who are responsible for the system planning, installation, commissioning, operation, maintenance, decommissioning, and/or disposal of meters. 1.2SafetyYou must observe all industry safety precautions during all phases of operation, service, and servicing of the meters. Failure to comply with these precautions or with specific warnings in this manual violates safety standards of design, manufacture, and the intended use of the metering instrument. Sensus Metering Systems assumes no liability for the customer’s failure to comply with these requirements.WARNINGHazardous voltages are present while power is applied to meters, meter sockets, or other metering equipment. Any work on the energized equipment presents the danger of electrical shock and can result in death or serious injury. The information contained within this manual is intended to be an aid to qualified metering personnel. It is not intended to replace the extensive training necessary to handle metering equipment in a safe manner.Use extreme care when servicing the meter while power is applied.CAUTIONAll work on this product should be performed by qualified electricians and metering specialists in accordance with local utility safety practices, utility requirements, and procedures outlined in Chapter 14 of The Handbook for Electricity Metering, 10th Edition. Failure to comply with this caution can result in the destruction of or damage to the equipment.!
SmartPoint Module Overview 2-1SmartPoint Module for the Elster A3 Meter ECMTM400002 SmartPoint Module Overview2.1 FlexNet SmartPoint AssemblyThe SmartPoint assembly consists of a SmartPoint printed circuit board and a separate antenna printed circuit board. A 20-pin connector joins the SmartPoint module to the sensor board.The SmartPoint module is installed on three plastic standoffs inserted in the sensor board. The antenna is fitted into a slot on the side of the base. A 20-pin connector joins the SmartPoint module to the sensor board.The FlexNet SmartPoint module contains a micro-controller, a FlexNet transceiver, and a FlexNet AMI antenna. See Section 2.3 for more information on the FlexNet System, and see Appendix A for a more detailed FlexNet SmartPoint overview.The transceiver operates between 800 and 960 MHz, with each 100 MHz operation band (800, 900 MHz) requiring a slightly different build, using alternate capacitors, inductors, possibility layouts, and antennas.The authorized SmartPoint bandwidth is 25 kHz. • The transceiver is capable of multiple on-air modulation formats, including:• Normal mode, for standard transmissions,• Message Pass mode for messages optionally repeated by a receiver-capable meter, and• Poll/Response mode, for providing a clear channel for responses from tower commands.2.2 Labels2.2.1 FCC LabelThe FCC label may:• contain patent and part numbers,• provide relevant FCC Part 15 compliance information for the integrated AMI card,• describe the operating conditions, or• contain a warning for disposal in the event that the AMI card contains Mercury.If installing a new AMI card, this label is attached to the register cover. 2.3 FlexNet System OverviewThe FlexNet System enhances the Elster meter by providing Advanced Metering Reading (AMR) capability. See Appendix A for a more detailed overview of the FlexNet SmartPoint.2.3.1 Description of OperationThe FlexNet data collection and command network is comprised of two parts: • Local RF Network, and • Regional Network Interface (RNI). : FlexNet Fixed Base AMI Network Overview2-1, FlexNet AMI Network Overview, exhibits the general structure of the communications network employed to access and retrieve meter data.
SmartPoint Module Overview 2-2SmartPoint Module for the Elster A3 Meter ECMTM40000Figure 2-1: FlexNet Fixed Base AMI Network Overview2.3.2 FlexNet AMI Local RF Network The Local RF network consists of FlexNet SmartPoint modules (transceivers) located at each meter, and a network of FlexNet Tower Gateway Base Stations (TGBs). 2.3.2.1 Meter EndpointsThe integrated SmartPoint module communicates with the Elster A3 bus to provide internal AMR capability to the Elster meter for use on commercial services. The module:•directly reads the data in the meter (energy),•provides control capabilities to reset the meter Demand and operate control relays, and•monitors service voltage to provide real-time outage and restoration alarms.
SmartPoint Module Overview 2-3SmartPoint Module for the Elster A3 Meter ECMTM40000Figure 2-2: Elster Meter with SmartPoint Module InstalledThe SmartPoint modules transmit the meter consumption and status information at regular intervals. Critical meter status and power outage alarms are also monitored on a real-time basis. The SmartPoint module transmits the meter data to the fixed network using long-range, licensed, narrowband radio. The SmartPoint is also able to use mPass Mode, which allows a SmartPoint module to repeat a data transmission from another SmartPoint device that is blocked from the TGB transceiver, and allows the TGB transceiver to communicate with a blocked SmartPoint module through another SmartPoint module.2.3.2.2 Tower Gateway Base StationThese transmissions are received by one or more TGBs. The TGBs use existing radio towers; antennas are installed at heights of 200’-650’, providing coverage of 75 to 300 sq. mi. The TGB includes a Linux computer that communicates to the RNI (see below) via modem. The TGB forwards the data to the Regional Network Interface (RNI) via phone line, ISDN, Satellite, or WiFi links, and stores the information locally in the event of RNI communications path interruption. The transceiver allows for two-way communication over the FlexNet AMI network, allowing commands to be issued to the SmartPoint modules. 2.3.3 FlexNet AMI Regional Network Interface The RNI consists of modems and Linux computers with backup power. The RNI controls the TGB sites and keeps a 60-day log of metering data. It also includes an SQL database that generates reports for billing and other external system elements. Interfaces are available to a variety of metering databases: Sensus SiMS, Itron MV-90 and Enterprise Edition. XML and customized interfaces are available.
SmartPoint Module Overview 2-4SmartPoint Module for the Elster A3 Meter ECMTM400002.4 SmartPoint TerminologyOn-Air Messages (see Chapters 3 and 4). This term is used to describe messages sent by FlexNet endpoint devices. The exception to this is the command message, which carries On Air Commands from the RNI through the TGB to the endpoint (see Section 4.6). Serial Commands (see Chapter 5). These messages are used to control a FlexNet endpoint device over a serial interface. Many devices have a receive-only inductive coupled interface (called the Mag Loop), while others feature a RS-232 serial interface. This creates a situation where devices receive commands over the serial interface but respond over RF. For example, devices will respond to Ping Commands received on the serial interface by sending a response out of the Flexnet RF interface. Devices that have RS232 interfaces support 2-way serial communications in certain cases, such as when supporting firmware upgrade over the srerial port.On Air Commands (see Chapter 6): The various types of command messages are used for configuring and querying the endpoint devices.Ping Commands (see Section 6.2.9): This is a specific On Air Command (Type 8) that is used to query status and readings from the endpoint devices.For example, to get a meter to send a Setup/Configuration Message (defined in Section 4.3), you send it an On Air Command (7) message with a command-type of Ping (8) and a Ping type Setup (15); the meter will respond with the Setup/Command On Air Message.
On Air Message Format 3-1SmartPoint Module for the Elster A3 Meter ECMTM400003 On Air Message FormatAll fields are sent least-significant byte first.The basic format of the on air message is as shown in the following table:3.1 Field Definitions3.1.1 Message LeaderThis is a repeating stream of the value 0xAA used by the receiver to trip and synchronize to the transmitted message. The leader is 152 bits or 19 bytes long.3.1.2 Sync8 bit Start of Message signal (0x36).3.1.3 Meter ID NumberA unique identifier, different and fixed for each end point device, 28 bits long.3.1.4 Customer ID4 Bits of Customer ID.Bytes (Bits)Field Description Value0-18 Leader 0xAA19 Sync Start of Msg 0x3620-23(0:3) Meter ID23(4:7) Customer ID 0x024 Control Control: 4 bits; Flags: 4 bits25 Length 0x03 – 0xFF26 Repeat Level/Sta-tus Repeat Level: 2 bits; Status: 6 bits27 App Sequence28 App Code29-56 App Data 0-252 bytes, currently fixed at 28 bytes57-60 CRC
On Air Message Format 3-2SmartPoint Module for the Elster A3 Meter ECMTM400003.1.5 ControlProvides status data to the receiver.3.1.5.1 RF Sequence NumberA 4 bit modulo 16 counter, increments each RF transmission.3.1.5.2 AC Power FailSet if AC Power is not present. In AC only powered end point devices, set in Last Gasp messages.3.1.5.3 Battery LowTested under load, this bit is set if the input voltage is below a certain threshold. The bit is valid on next transmitted message.3.1.5.4 Power RestoreSet in the first new message after a power up, cleared otherwise.3.1.5.5 Payload EncryptedSet if the payload data has on-air encryption turned on, cleared otherwise.3.1.6 Length The number of remaining data bytes in the on air message not including the CRC bytes. Initially, there will be 1 fixed value of length to facilitate receiver firmware functionality: 31 bytes.Bits Control 0-3 RF Sequence Number4 AC Power Failed5 Power Restored 6 Low Battery Detected7 Payload Encrypted
On Air Message Format 3-3SmartPoint Module for the Elster A3 Meter ECMTM400003.1.7 Repeat Level / Status 3.1.8 Application SequenceAn 8 bit modulo 256 counter that increments every time new application data is transmitted by the end point device.3.1.9 Application CodeAn 8 bit code used to determine the format of the data in the Application Data field.3.1.10 Application DataBetween 0 and 252 bytes of application data in the future, fixed at 28 for now.3.1.11 CRCThe 32 bit CCITT Cyclical Redundancy Check sum of all of the bytes from the ID field to the last Application Data field. Allows for bit error detection and single bit error correction.3.2 On Air Time RequirementsOn air messages take differing amounts of airtime depending on modulation format. The message length of every message is fixed at 31 bytes. The table below shows the transmission time for each combination:Bits Repeat Level / Status0 History Overflow1In Time Sync 2Tamper3Brown Out4 Meter Read Failure5 RF Sequence Number MSB6-7 Repeat LevelModulation Error Correction Rate (Hz)Msg Time (msec)Normal Baud Interleaved, Convolutionally Encoded8044.5544 107.40mPass Baud Interleaved, Convolutionally Encoded5000.0000 157.60Boost Baud Interleaved, Convolutionally Encoded804.4554 1074.02Half Baud Interleaved, Convolutionally Encoded4022.2772 214.80
On Air Message Format 3-4SmartPoint Module for the Elster A3 Meter ECMTM400003.3 AddressingEndpoint addresses are also called Meter ID, FlexNet ID, or Tx ID. In a FlexNet protocol packet, the endpoint address is carried in the Meter ID field defined above.3.3.1 Command AddressingThe Receiver will accept commands that are addressed to it via the Device ID of the on air message. The three accepted addresses are one that matches its own Device ID, one using the Broadcast Address, or, lastly, one using the Group Address.3.3.2 Broadcast AddressingA message sent with the Broadcast Address, which is all 1’s or 0xFFFFFFF = 268435455, is processed by all meters if the message is a command type that can be broadcast. Broadcast messages are not acknowledged.3.3.3 Group AddressingFlexNet group addressing can follow one of two conventions. 3.3.3.1 Group Addressing, Preferred MethodThe preferred method is to set the Group Address Indicator bit in the Repeat Level/Status byte as described in Section 3.1.7 and then place the destination group address in the Meter ID Number field as described in Section 3.1.3. All modern FlexNet endpoints support this method. This does not work with early FlexNet devices.3.3.3.2 Group Addressing, Legacy Method (deprecated)A message sent with the Tx Id Number field set to Group Address, which is all 1’s except for the last bit or 0xFFFFFFE = 268435454 is a legacy Group Addressed message. For legacy group addressed messages except for Ping Command types, the group address is found at byte offset 23-26 of the application data. For Ping Command messages, the group address is found at byte offset 9-12 of the application data, see Section 5.3.4.
On Air Message Types 4-1SmartPoint Module for the Elster A3 Meter ECMTM400004 On Air Message TypesAll fields are sent least-significant byte first unless otherwise specified.The format of the data in the Application Data field dependent on the value of the Application Code field as follows and is always 28 bytes in length.4.1 On Air Message Types4.2 Testing Message – App Code 220Message Format: This is a test only message and has mostly static Application Data. Application Data byte 1 has a sequence counter field which counts up one every time the 4 bit sequence counter in the control byte Application Code Message220 Testing Message1 Meter Setup and Configuration5 Serial #/Postition Binding6 GPS Mapping Message8 Buddy Information Message13 C&I Meter Read with History14 C&I Tier Data15 C&I C12.19 Tunneling Read16 C&I Alarm Message22 Extended Setup Information25 Demand History Message28 Load Profil Meta Data29 Load Profile Block Data30 Firmware Image Check38 High Res. C&I Meter Read with History48 Generic Ping Response55 C&I High Res Read with Pulse Data57 Scratch Pad Image Check
On Air Message Types 4-2SmartPoint Module for the Elster A3 Meter ECMTM40000rolls over (every 16 messages). The Application Data below show an example of the Testing Message with a sequence number of 0x64: 0x0064000102030405060708090a0b0c0d0e0f101112131415161718194.3 Meter Setup / Configuration Message—App Code 1Message Format: After an end point is configured to read meter data, it transmits a Meter Setup / Configuration message containing a report on how it is configured; it has the following Application Data field format:Byte (Bits) Field0 Firmware Version1 Device Type2 (0:2) Meter Sample Rate2 (3:7) Supervisory Transmit Rate3 Base Frequency4-5 Transmit Channel A6-7 Transmit Channel B8-9 Transmit Channel C10-11 Transmit Channel D12-13 Receiver Channel14-15 Boost Mode Channel16 (0:3) Boost Mode Sub-Channel16 (4) Boost Mode Hopping16 (5:7) Transmit Channel Mask17 (0:3) Transmitter Operational Mode17 (4:6) Receiver Operational Mode17 (7) Enable Encryption18-19 Real Time Clock20-21 TXCO Correction22-24 A/D Calibration25 Minimum Click Duration26 (0:5) Minimum Voltage Threshold27 (0:3) Outage Time Threshold
On Air Message Types 4-3SmartPoint Module for the Elster A3 Meter ECMTM40000Specific definitions for these fields are shown in Chapter 5, with the exception of the first two fields, Firmware Version and Device Type. Firmware version contains the version of the firmware of the device. If the most significant bit of Firmware version is set, the firmware is a beta test set. The Device Type is currently defined as Device Type 5.4.4 Meter Serial Number/Position Binding—App Code 54.4.1 Message FormatThis message contains the meter Serial Number and also the installation latitude and longitude (if position is programmed in at installation time). The message has the following format.4.4.2 Status FlagsOnly bit 0 is currently used and is the Just Programmed Bit. It is set if the device has received a static setup in the last 5 minutes. The remaining bits are (reserved) and are set to 0.4.4.3 Meter Serial NumberA 13 byte field containing the ASCII Serial Number reported by the end point device’s associated meter display board.4.4.4 Latitude / LongitudeThese fields contain a floating point representation in degrees of the end point device’s installation latitude and longitude. These fields are set using the installer with the installation tool, the end point has no on board GPS capability.27 (0:3) Outage Time Threshold27 (4:7) Restored Time ThresholdApp Data Byte01-13 14-17 18-21 22-23 24DataStatus FlagsMeter Serial NumberLatitude Longitude Programmer IDSetup FlagsByte (Bits) Field
On Air Message Types 4-4SmartPoint Module for the Elster A3 Meter ECMTM400004.4.5 Programmer IDThe 16 bit ID of the handheld programmer used to setup the device.4.4.5.1 Setup FlagsAn 8 bit field indicating which setup messages have been received by the device. The individual bits in the byte are defined below:4.5 GPS Mapping Message4.5.1 Message FormatThis is a special message used for radio coverage mapping and requires an attached GPS module. Bytes 16 to 27 are reserved.Bit Setup Message Received0Set ID1 Static Setup2 Set Crystal Offset3 Set Lat / Long4 Set Meter Reading5 Set Voltage Quality Levels6 Set Encryption Key7 (reserved)App Data Byte Data0-2 Reserved3-5 Latitude (MSB First)6-8 Longitude (MSB First)9-10 Speed11-12 Heading13-14 Altitude
On Air Message Types 4-5SmartPoint Module for the Elster A3 Meter ECMTM400004.5.1.1 LatitudeThese fields contain a representation, in degrees of the end point device’s installation latitude as presented by the attached GPS module. The actual latitude can be calculated using the following formula:Latitude (degrees) = (3 Byte App Data Latitude) * 90.0/8388608Negative values are in the southern hemisphere; positive values are in the northern hemisphere.LongitudeThese fields contain a representation in degrees of the end point device’s installation longitude as presented by the attached GPS module. The actual longitude can be calculated using the following formula:Longitude(degrees) = (3 Byte App Data Longitude) * 180.0 / 8388608Negative values are in the western hemisphere, positive values are in the eastern hemisphere. For example, an App Data Latitude of 0x bff2d7 yields a latitude in degrees of -90.07229, or 90.07229 West.4.5.1.2 SpeedThis field contains the velocity of the endpoint device in 0.01 knot resolution and is sent LSB first.4.5.1.3 HeadingThis field contains the device’s heading in 0.01 degree resolution and is sent LSB first.4.5.1.4 AltitudeThis field contains the device’s altitude in 0.1 meter resolution.4.6 Command Message—App Code 74.6.1 Message FormatThis is a Command Message sent by a TGB ( Tower Gateway Basestation ) or a repeating two-way device. The format of bytes 1-27 are variable based upon command type.4.6.2 Command TypeThis field contains the type of data in the command as shown below, specific formats for each message can be found in Section 6.2, Receiver On-Air Command Formats.App Data Byte 01 - 27Data Command Type Command Data
On Air Message Types 4-6SmartPoint Module for the Elster A3 Meter ECMTM400004.7 Buddy Message—App Code 84.7.1 Message FormatThis is a message sent by a relaying two way transmitter sent after repeating a message in order to build routing information in the central database. Meter reading data from the repeating device has been added to the previously unused portion of the Buddy Message for extra system redundancy. The format of the Buddy Message is shown below:If the Extended Buddy Report bit is set, bytes 10 to 27 are set as follows:4.7.2 Buddy IdThis field contains the Id of the unit that has been relayed.App Data Byte Data0-3 Buddy ID4 Buddy App Code5 Buddy RF Sequence6 Buddy App Sequence7 Received Signal Level8 Received Noise Level9 (0:6) Queue Time9 (7) Extended Buddy Report10-11 Relative Time Stamp12-14 Current Reading15-27 History SamplesApp Data Byte Data10 Embedded App Code (13)11-12 Relatvie Time Stamp13-15 Delta Data Type/Current Reading16-19 Peak Demand20-27 History Samples
On Air Message Types 4-7SmartPoint Module for the Elster A3 Meter ECMTM400004.7.3 Buddy FieldsThese fields represent the values received in the message from the device that has been buddy relayed.4.7.4 Queue TimeThe time in seconds that the buddy device stored the message before forwarding it.4.7.5 Meter Reading FieldsThese fields, Relative Time Stamp, Current Reading and History Samples have the same format as that defined in the Type 12 Meter Read Message.
On Air Message Types 4-8SmartPoint Module for the Elster A3 Meter ECMTM400004.8 C&I Meter Read With History—App Code 134.8.1 Message FormatThis is the standard meter reading message and has the following format:4.8.2 Relative Time Stamp16 bits of byte 0-1, elapsed time since last meter reading. Time is always represented in two-second resolution. 4.8.3 Delta Data Type3 bits, bits 0-2 of byte 2. Used to define the amount of time represented by each History Sample in bytes 8-27. The valid values for Delta Data Type are defined in the table below. 4.8.4 Compression Enabled1 bit, bit 3 of byte 2. If set, the History Sample in bytes 8-27 are sent in the data compression enabled format. If cleared, the History sample bytes are sent in the fixed bin width format. 4.8.5 Current Meter Reading20 bits, bits 4-7 of byte 2 and all of bytes 3 and 4. The total power consumption represented in binary in kWh. App Data Byte 0-1 2-4 5-8 9-11 12-27DataRelative Time StampDelta Data Type / Current ReadingPeak Demand ReadingPhase A, Phase B, Phase C Voltage History SamplesDelta DataTypeHistory Samp Interval (min)Max Pulsesper IntervalLikely Transmit Rate05 28.33 30 min115 85.00 1 Hr260 340.00 4 Hr3360(6 Hours) 2040.00 6 Hr4720(12 Hours) 4080.00 12 Hr51440(24 Hours) 8160.00 12 Hr
On Air Message Types 4-9SmartPoint Module for the Elster A3 Meter ECMTM400004.8.6 Peak Demand Reading32 bits, all of bytes 5-8. The peak demand reading is represented as a four byte floating point number in W. 4.8.7 Phase A, B and C Meter VoltagesThree 8 bit fields containing meter line voltage readings of the voltage for all available phases at the time of the meter reading. The values in the fields can be converted to voltage using the following formula which provides voltages from 50 to 560 volts: Voltage = Value*2 + 504.8.8 Compression Enabled History SamplesAll bits of bytes 12-27 compressed using a Huffman Binary Tree compression algorithm. As many History Sample bins as possible are packed into the remaining space in the on air message, up to 136 bins in the minimum case. Each history sample is stored as the difference from the last reading. The Codex used to encode the histories is shown in the following table:Scanning begins at bit 0 of byte 0 and goes to ms bit of byte 0 before rolling down to the ls bit of byte 1 on through the history buffer..To decode, scan through the buffer counting consecutive 1’s. When a 0 is reached, that denotes the end of the Key Bit Pattern. The number of consecutive ones indicates the specific symbol.If the end of the buffer is reached before a complete valid symbol is reached, ignore that history value.Key Bit Pattern (binary)History ValueRequired Number of BitsComment00110 1 2110 2 31110 3 411110 4 5111110 5 61111110xxxxx 6-37 11 If 0x7E is detected, the next 5 bits + 6 = value11111110xxxxxxxxxxxxx38-8213 21If 0xFE is detected, the next 13 bits + 38 = value11111111 N/A N/A End of usable history, end history processing
On Air Message Types 4-10SmartPoint Module for the Elster A3 Meter ECMTM400004.8.9 Fixed Bin Width History SamplesAll bits of bytes 12-27. As many History Sample bins as possible are packed into the remaining space in the on air message. Each history sample is stored as the difference from the last reading. Note: A residential meter at maximum load can generate 346 counts per hour. The size and number of History Sample bins in the message are determined by the Delta Data Type field are shown in the following table (6-7 are reserved). 4.9 C&I Tier Data—App Code 144.9.1 Message FormatThis message is used to transmit tier data from the C12.19 Standard Table 23 and has the following format (Note that Tier 7 is a special case to report Service Quality and has a different format).Delta Data TypeHistory Sample Interval (min)Max Pulsesper IntervalRequired# Bits# AvailableBinsTotal History(Hours)Likely Transmit Rate05 28.33 5 25 2.333 30 min115 85.00 7 18 5 1 Hr260 340.00 9 14 16 4 Hr3360(6 Hours) 2040.00 11 1178(3.25 days)6 Hr4720(12 Hours) 4080.00 12 10 144(6 days) 12 Hr51440(24 Hours) 8160.00 13 9 264(11 days) 12 HrApp Data Bytes Data0 Tier Information1 (0:5) Meter Type1 (6:7) Selected Data Table2-4 Data Flags / Peak Demand Time5-8 Summation Reading (103 resolution) 9-12 Demand Reading (100 resolution)13-16 Cumulative Demand Reading (102 resolution)17-20 Coincident Reading (103 resolution)
On Air Message Types 4-11SmartPoint Module for the Elster A3 Meter ECMTM400004.9.2 Tier Information8 bits of byte 0 (bit 7 is reserved). Used to identify the tier and sub tier of the data in this message. A separate message is sent for each Tier and SubTier configured in the meter as defined in the following tables:4.9.2.1 TierBits 0-2 of the Tier Information byte is defined in the following table:4.9.2.2 Sub TierBits 3-6 of the Tier Information byte is used when individual Tiers have more than one Summation, Demand or Coincident reading in a single Tier21 # Demand Resets22 Summation Source Index23 Demand Source Index24 Coincident Source Index25 Quantity of Tier InformationBits Description0-2 Tier3-6 Sub Tier7 (reserved)Value Tier0 Totalization1Tier A2Tier B3Tier C4Tier D5-6 (reserved)7 Service QualityApp Data Bytes Data
On Air Message Types 4-12SmartPoint Module for the Elster A3 Meter ECMTM400004.9.3 Meter TypeLower 6 bits of byte 1. The type of data and unit of measure reported in the tier data message is dependant on the meter type as defined below:4.9.4 Selected Data TableUpper 2 bits of byte 1. This selects data from table ST-23, ST-24, or ST-25:4.9.5 Data Flags / Peak Demand TimeBytes 2-4. Data flags which data fields are available in this message. Peak Demand Time contains the time and date of the Peak Demand.Value Meter Type0 (reserved)1Elster A3R2Elster A3K3Elster A3D4Elster A3T5Elster A3Q6-255 ReservedValue Table0 ST-23 Standard Data Table1 ST-24 Previous Season Data Table2 ST-25 Demand Reset Data Table3 ReservedByte (Bits) Description2 (0)Cumulative Demand Type: 0 – Cumulative 1 – Continuously Cumulative2 (1)Summation Available This Message 0 – No 1- Yes2 (2)Demand Available This Message 0 – No 1- Yes2 (3)Coincident Available This Message 0 – No 1- Yes
On Air Message Types 4-13SmartPoint Module for the Elster A3 Meter ECMTM400004.9.6 Summation Reading (103 resolution)Bytes 5-8. The Summation for this Tier and Sub Tier in represented as a floating point number in kilo resolution. 4.9.7 Demand Reading (100 resolution)Bytes 9-12. The Demand for this Tier and Sub Tier represented as a floating point number in 100 unit resolution. 4.9.8 Cumulative Demand Reading (103 resolution)Bytes 13-16. The Cumulative Demand Reading for this Tier and Sub Tier represented as a floating point number kilo resolution. Whether this value is Cumulative or Continuously Cumulative is defined by Bit 0 of Byte 1.4.9.9 Coincident Reading (103 resolution)Bytes 17-20. The Coincident Reading for this Tier and Sub Tier represented as a floating point number in kilo resolution. 4.9.10 # Demand ResetsAll bits of Byte 21. The number of Demand Resets detected by the meter. 4.9.11 Source IndicesThe definitions for the ANSI C12.19 Source Index fields (bytes 22 to 25) are based upon the Meter Type in byte 1. The Source Index definitions are meter-manufacturer specific. Refer to the Elster A3 technical manual for the meter’s ANSI C12.19 details. 2 (4-7) Peak Demand Month 0-11 = Jan-Dec3 (0-4) Peak Demand Day 1-31 = 1st to the 31st3 (5-7), 4 (0-1) Peak Demand Hour 0-23 = Midnight to 11:00pm4 (2-7) Peak Demand Minute 0-59
On Air Message Types 4-14SmartPoint Module for the Elster A3 Meter ECMTM400004.9.12 Quantity of Tier Information8 bits of byte 23 (bit 7 is reserved). Used to report the total number of tiers and sub tiers in all of the tier data in this messages as defined in the following tables: 4.9.12.1 Number of TiersBits 0-2 of the Quantity of Tier Information byte which represent the number of reported tiers not including the Totalization tier. For example, if Tiers A,B,C, and D were configured in a meter, then Number of Tiers would be set to 4. 5 sets of tier information would actually be sent, 1 for the Totalization, and 1 for each of the 4 tiers.4.9.12.2 Number of Sub TierBits 3-6 of the Quantity of Tier Information byte which represent the number of Sub Tiers sent for each tier. The minimum is 1, the maximum is 10.4.9.13 Service Quality Message FormatThis message is used to transmit Service Quality and is identified by being special Tier number 7. Bits Description0-2 Number of Tiers3-6 Number of Sub Tiers7 ReservedApp Data Bytes Data0 Tier Information ( Tier = 7, SubTier Field reserved )1-2 Service Frequency ( 0.1 Hz resolution )3-4 RMS Amps Phase A (0.1 Amp resolution) 5-6 RMS Amps Phase B (0.1 Amp resolution)7-8 RMS Amps Phase C (0.1 Amp resolution)9-10 RMS Volts Phase A (0.1 Volt resolution)11-12 RMS Volts Phase B (0.1 Volt resolution)13-14 RMS Volts Phase C (0.1 Volt resolution)15-16 Phase Angle B-A (0.1 degree resolution)17-18 Phase Angle C-A (0.1 degree resolution)19-20 Power Factor Angle Phase A (0.1 degree resolution)21-22 Power Factor Angle Phase B (0.1 degree resolution)23-24 Power Factor Angle Phase C (0.1 degree resolution)
On Air Message Types 4-15SmartPoint Module for the Elster A3 Meter ECMTM400004.10 C&I Tunneling Read—App Code 15Message Format: This message is used to transmit raw C12.19 table data in response to a C12.19 Table Read Command. The Application Sequence number of this message matches that of the Table Read Command. The C12.19 table and offset of the raw data also match the command. If the number of returned bytes is 0, then an error has occurred reading the table.App Data Bytes Data0 Number of returned bytes1-27 Raw Data bytes
On Air Message Types 4-16SmartPoint Module for the Elster A3 Meter ECMTM400004.11 C&I Alarm Message – App Code 164.11.1 Application DataThis message contains alarm data from the meter and is also used to report power failures.4.11.2 Voltage Phase A,B, and CThe current voltage reported by the meter for all three phases:Voltage Phase n = Value*24.11.3 Click CountAn 8 bit field containing the number of times AC voltage loss has been detected by the meter.4.11.4 Time Since EventAn 8 bit fields containing the time in 6 second resolution since a power failure or power restoration actually occurred.App Data Bytes Data0 Voltage Phase A1 Voltage Phase B2 Voltage Phase C3 Click Count4 Time Since Event 5-6 Extended Time Since Event7-9 Current Reading10 Device Temperature11 µP Errors12 Lock Errors13-14 Meter Alarm Flags15 # Manual Demand Resets16-19 Time of Last Power Fail20-23 Time of Last Power Restore24 Total # of Outages25 Flags
On Air Message Types 4-17SmartPoint Module for the Elster A3 Meter ECMTM400004.11.5 Current Meter Reading20 bits, of the meter setting. All 6 decimal meter digits represented in binary.4.11.6 Extended Time Since EventA 16 bit fields containing the MS two bytes of Time Since Event in 1536 second resolution since a power failure or power restoration actually occurred. This yields over 3 years of possible measurement. The overall Time Since Event can be calculated using the following formula:Total Time Since Event = (Extended Time Since Event)* 1536 + (Time Since Event)*64.11.7 Device TemperatureAn 8 bit signed value containing the current device temperature in degrees Celsius.4.11.8 µP StatusMicroprocessor Status, 8 bits with 3 fields. RAM and ROM Tests are run once at boot-up. Processor Rests is a one up counter that increments once every time the microprocessor is reset. This field is cleared by a static setup message. The bit fields are defined in the table below:4.11.9 Lock ErrorsVoltage Controlled Oscillator Errors, 8 bits with 2 fields. Rx Calibration Errors is a one up counter that increments once every time the receiver chip is commanded to calibrate and fails. Synthesizer Lock Failures is a one-up counter that increments once every time the transmitter is commanded to lock to a frequency and fails. These fields are cleared by a static setup message. The bit fields are defined in the table below:Bits Description7:6 Reserved5 RAM Test Failed4 ROM Test Failed3:0 Processor ResetsBits Description7:4 Receiver Calibration Errors3:0 Synthesizer Lock Failures
On Air Message Types 4-18SmartPoint Module for the Elster A3 Meter ECMTM400004.11.10 Alarm DataAll bits, bytes 13-14. The Alarm provides 16 bit fields, each of which can represent a different failure mode as shown in the table below.4.11.11 Time of Last Power FailureThe time and date of the last power failure, as defined in the table below:4.11.12 Total # of OutagesThe total number of outages since meter was configured.Byte, Bit Description13, 0 Meter Unprogrammed13, 1 Configuration Error13, 2 Self check Error13, 3 RAM Failure Error13, 4 ROM Failure Error13, 5 NONVOL Error13, 6 Clock Error13, 7 Measurement Error14, 0 Low Battery Error14, 1 Low Loss Potential14, 2 Demand Overload14, 3 Power Failure14, 4-7 ReservedByte Description15 Month (1-12)16 Day (1-31)17 Hour (0-23)18 Minute (0-59)
On Air Message Types 4-19SmartPoint Module for the Elster A3 Meter ECMTM400004.11.13 FlagsAn eight-bit field containing two status flags, one indicating an EEROM is available on the board, and another indicating that the temperature exceeds the programmed threshold.4.12 Demand History Message—App Code 254.12.1 Message FormatThis message is sent in response to Demand Reset commands and Demand History pings. All values are read from C12.19 tables in the meter including date and time. The message has the following Application Data field format:Bits Description7:2 Reserved1 Hot Socket Alarm0 Interval EEPROM AvailableByte (Bits) Field0 Number of Demand Resets1(0:3) Last Demand Reset Month (1-Jan -> 12 Dec)1(4:7), 2(0) Last Demand Reset Day (1-31)2(1:5) Last Demand Reset Hour (0-23)2(6:7),3(0:3) Last Demand Reset Minute (0-59)3(4:7) Last Peak Demand Month (1-Jan -> 12 Dec)4(0:4) Last Peak Demand Reset Day (1-31)4(5:7),5(0:1) Last Peak Demand Reset Hour (0-23)5(2:7) Last Peak Demand Second (0-59)6-9 Last Peak Demand (floating point Watts)10-13 Last Consumption Reading14(0:3) 2nd Demand Reset Month (1-Jan -> 12 Dec)14(4:7), 15(0) 2nd Demand Reset Day (1-31)15(1:5) 2nd Demand Reset Hour (0-23)15(6:7),16(0:3) 2nd Demand Reset Second (0-59)16(4:7) 2nd Peak Demand Month (1-Jan -> 12 Dec)17(0:4) 2nd Peak Demand Day (1-31)
On Air Message Types 4-20SmartPoint Module for the Elster A3 Meter ECMTM400004.12.2 Number of Demand ResetsNumber of times this meter reports that it has had it’s Peak Demand reset.4.12.3 Last Demand Reset Date and TimeThe time and date that this meter last had its’ demand reset via on air command.4.12.4 Last Peak Demand Date and TimeThe time and date of the Peak Demand immediately prior to the last demand reset.4.12.5 Last Peak DemandA 4 byte floating point representation of the Peak Demand immediately prior to the last demand reset.4.12.6 Last Consumption ReadingA 4-byte floating point number in Wh.4.12.7 2nd Demand Reset Date and TimeThe time and date that this meter last had its’ demand reset via on air command prior to the last demand reset.4.12.8 2nd Peak Demand Date and TimeThe time and date of the Peak Demand immediately prior to the last peak demand.4.12.9 2nd Peak DemandA 4 byte floating point representation of the Peak Demand immediately prior to the last peak demand.4.12.10 2nd Consumption ReadingA 4-byte floating point number in Wh.17(5:7),18(0:1) 2nd Peak Demand Hour (0-23)18(2:7) 2nd Peak Demand Second (0-59)19-22 2nd Peak Demand (floating point Watts)23-26 2nd Consumption Reading (floating point Wh)Byte (Bits) Field
On Air Message Types 4-21SmartPoint Module for the Elster A3 Meter ECMTM400004.13 Load Profile Metadata Message—App Code 28Message Format: This message is sent in response to a Load Profile Metadata ping. All values are read from C12.19 tables in the meter. Elster document “DD228-01.05/01.02 A3 Tables for 3rd Party Developers” can be used as additional reference. The references ST-xx and MT-xx represent C12.19 Standard Table xx and Manufacturer’s Table xx respectively. The message has the following Application Data field format:4.14 Load Profile Block Data Message—App Code 29Message Format: This message is sent in response to a Load Profile Block Data ping. All values are read from C12.19 tables in the meter. Elster document “DD228-01.05/01.02 A3 Tables for 3rd Party Developers” can be used as additional reference. The message contains raw interval block data, and as many messages as necessary are sent to complete and entire block. The length of the block can be determined using the following equation using variables from the Load Profile Metadata Message:SizeOfBlock = 5 + ((NumberOfIntervalsPerBlock + 7)/8) + (NumberofChannels * 2)) * NumberofIntervalsPerBlock)The app sequence number in the FlexNet header is set to the LSB of the LP block’s sequence number, as calculated based on Last_Block_Seq_Num - N (where N is the requested block number).Byte (Bits) Field0 (0:6) Reserved0 (7) LP Read Failure1-2 Number of Blocks Set (ST-61)3-4 Number of Intervals Per Block (ST-61)5 Number of Channels (ST-61)6 Interval Size (minutes) (ST-61)7 Adjusted Kh Scale Factor,power of 10 (MT-15)8-13 Adjusted Kh (MT-15)14 Adjusted p/r (MT-15)15 Unit of Measure (MT-17)16 Flow (MT-17)17-21 Block End Time, Year,Month, Day, Hour Minute (ST-64)22-23 Simple Interval Status (ST-64)
On Air Message Types 4-22SmartPoint Module for the Elster A3 Meter ECMTM40000The format of the message is as follows:Byte (Bits) Field0 (0:3) Message Sequence Number0 (4:6) Number of Messages0 (7) LP Read Failed1 - n LP Samples, from ANSI C12.19 table ST-64n+1 - n+4 (Last Message Only) The ANSI C12.19 Sequence Number of the Block Requested
On Air Message Types 4-23SmartPoint Module for the Elster A3 Meter ECMTM400004.15 Firmware Image Check Response—App Code 30Message Format: The device responds back to the download host with a Firmware Image Check Response packet containing the number of bad blocks in the response, followed by a sequence of block numbers ( word-sized, 2 bytes each, little endian ) which have not been received by the device since the last Load Start message was received. If all blocks have been received and the CRC is correct, the response contains only the sub-command and a single byte of 0. If the CRC is incorrect, but the device has received all blocks, the response contains the sub-command, a single byte of 1 and 2 bytes of 0xFFFF. The format of the Firmware Image Check Response is:4.16 High Res C&I Meter Read with History—App Code 38Message Format: The device sends this message in response to a 4.17 Generic Ping Response—App Code 48The generic ping response is sent in response to pings which do not generate on-air message types. The ping response sub-type identifies the type of ping response.Currently defined ping response sub-types are descibed in the following sections:App Data Byte 0 2 2-nData App Code = Firmware Image Check Resp (30)# of bad blocksList of Block NumbersApp Data Byte (Bits) Field0 Ping Response Sub-Type1-27 Ping Response Data
On Air Message Types 4-24SmartPoint Module for the Elster A3 Meter ECMTM400004.17.1 Demand Enable Status/Interval Configuration4.17.2 TOU Enable Status/Tier and Season ConfigurationPing Response to Data Byte (Bits) Field0 (0) Message Sequence Number0 (1:7) Number of Messages1 LP Read Failed2 LP Samples, from ANSI C12.19 table ST-643(Last Message Only) The ANSI C12.19 Sequence Number of the Block Requested4 - 26 ReservedPing Response to Data Byte (Bits) Field0(0) TOU Enabled0(1:7) (reserved)1-2(0) Season A: Start Date (Julian Day 0-365)3 (A) Tier 1: First 15-Min Interval (1-96)4 (A) Tier 1: Last 15-Min Interval (1-96)5 (A) Tier 2: First 15-Min Interval (1-96)6 (A) Tier 2: Last 15-Min Interval (1-96)7 (A) Tier 3: First 15-Min Interval (1-96)8 (A) Tier 3: Last 15-Min Interval (1-96)9 (A) Tier 4: First 15-Min Interval (1-96)10 (A) Tier 4: Last 15-Min Interval (1-96)11-12(1) Season B: Start Date (Julian Day 0-365)13 (B) Tier 1: First 15-Min Interval (1-96)14 (B) Tier 1: Last 15-Min Interval (1-96)15 (B) Tier 2: First 15-Min Interval (1-96)16 (B) Tier 2: Last 15-Min Interval (1-96)17 (B) Tier 3: First 15-Min Interval (1-96)
On Air Message Types 4-25SmartPoint Module for the Elster A3 Meter ECMTM4000018 (B) Tier 3: Last 15-Min Interval (1-96)19 (B) Tier 4: First 15-Min Interval (1-96)20 (B) Tier 4: Last 15-Min Interval (1-96)21 (0:3) Weekend Tier21 (4:7) Holiday Tier22-26 (reserved)Ping Response to Data Byte (Bits) Field
On Air Message Types 4-26SmartPoint Module for the Elster A3 Meter ECMTM400004.17.3 TOU Current Year Holidays4.17.4 TOU Next Year HolidaysPing Response Data Byte (Bits) Field0-1(0) Holiday 1: Julian Day (0-366)2-3(0) Holiday 2: Julian Day (0-366)4-5(0) Holiday 3: Julian Day (0-366)6-7(0) Holiday 4: Julian Day (0-366)8-9(0) Holiday 5: Julian Day (0-366)10-11(0) Holiday 6: Julian Day (0-366)12-13(0) Holiday 7: Julian Day (0-366)14-15(0) Holiday 8: Julian Day (0-366)16-17(0) Holiday 9: Julian Day (0-366)18-19(0) Holiday 10: Julian Day (0-366)20-21(0) Holiday 11: Julian Day (0-366)22-23(0) Holiday 12: Julian Day (0-366)23(1:7)-26 ReservedPing Response to Data Byte (Bits) Field0-1(0) Holiday 1: Julian Day (0-366)2-3(0) Holiday 2: Julian Day (0-366)4-5(0) Holiday 3: Julian Day (0-366)6-7(0) Holiday 4: Julian Day (0-366)8-9(0) Holiday 5: Julian Day (0-366)10-11(0) Holiday 6: Julian Day (0-366)12-13(0) Holiday 7: Julian Day (0-366)14-15(0) Holiday 8: Julian Day (0-366)16-17(0) Holiday 9: Julian Day (0-366)18-19(0) Holiday 10: Julian Day (0-366)20-21(0) Holiday 11: Julian Day (0-366)
On Air Message Types 4-27SmartPoint Module for the Elster A3 Meter ECMTM4000022-23(0) Holiday 12: Julian Day (0-366)23(1:7)-26 ReservedPing Response to Data Byte (Bits) Field
On Air Message Types 4-28SmartPoint Module for the Elster A3 Meter ECMTM400004.17.5 Click History4.17.6 Load Limit Status/Threshold4.17.7 Advanced Voltage Quality SettingsPing Response to Data Byte (Bits) Field0-3 Epoch Time of Click 14-7 Epoch Time of Click 28-11 Epoch Time of Click 312-15 Epoch Time of Click 416-19 Epoch Time of Click 517-20 Epoch Time of Click 621-24 Epoch Time of Click 725-26 ReservedPing Response to Data Byte (Bits) Field0 (0:6) (reserved)0 (7) Enable Current Limit1Current Limit (1-255 A)(1 amp steps)3-26 (reserved)Ping Response to Data Byte (Bits) Field0 Brownout Voltage Threshold1 (0) Enable Brownout Reporting1 (1) Enable Over Rated Current Reporting1 (2) Enable Reverse Power Reporting1 (3:7)-26 Reserved
On Air Message Types 4-29SmartPoint Module for the Elster A3 Meter ECMTM400004.17.8 TOU Auto-Push OptionsPing Response to Data Byte (Bits) Field0 (0:2) Auto-push interval0 (3:6) (reserved)0 (7) Enable Auto TOU push1 (0) Push Tier 11 (1) Push Tier 21 (2) Push Tier 31 (3) Push Tier 41 (4) Push Critical Peak1 (5) Push Tier 51(5:7) (reserved)2TOU Sample Hour (0-23)0 – Midnight (iConA only)3-26 (reserved)
On Air Message Types 4-30SmartPoint Module for the Elster A3 Meter ECMTM400004.18 C&I High Res Read with History Data—App Code 554.18.1 Application DataThis message contains the C&I High Res Read with History Data as defined in the table below, sent in response to a Meter Read Ping message when the meter is in high res mode.4.18.2 Relative Time StampBytes 0-1. Elapsed time since last meter reading (2 second resolution). This field is used to determine exactly when the meter reading occurred.4.18.3 Delta Data TypeByte 2, bits 0-2. Used to define the amount of time represented in each History Data sample. The valid values for Delta Data Type are defined in the table below:Ping Response to Data Byte (Bits) Field0-1 Relative Time Stamp2Delta Data Type (0:2)Click Count (3:7)3-6 Current Consumption (ST23 SUMMA-TIONS[0])7-10 Peak Demand Reading (ST23DEMANDS[0].DEMAND)11 Phase A Volts ST28 RMSVOLTSA12 Phase B Volts ST28 RMSVOLTSB13 Phase C Volts ST28 RMSVOLTSC14-27 History Data In 1 Wh Resolution, stored in vari-able bin width formatDelta Data Type History Samp Interval (min)051152603360(6 Hours)4720(12 Hours)
On Air Message Types 4-31SmartPoint Module for the Elster A3 Meter ECMTM400004.18.4 Click CountByte 2 bits 3-7: The 5 LSBs of the modulo-256 click counter, a count of short duration power outages.4.18.5 Current Consumption (wH resolution)Bytes 3-6. The Current Consumption in represented as a 32 bit integer number in wH resolution.4.18.6 Peak Demand Reading32 bits, all of bytes 7-10. The peak demand reading is represented as a four byte floating point number in W.4.18.7 RMS Volts Phase A-CBytes 11-13. Represented in 2 Volt resolution.4.18.8 History DataBytes 14-27. History data samples compressed using the FlexNet Variable Bin Width compression mechanism.4.19 Scratch Pad Image Check Response—App Code 57Message Format: The device responds back to the download host with a Scratch Pad Image Check Response packet containing the number of bad blocks in the response, followed by a sequence of block numbers (1 byte each) which have not been received by the device since the last Scratch Pad Start message was received. If all blocks have been received and the CRC is correct, the response contains only the sub-command and a single byte of 0. If the CRC is incorrect, but the device has received all blocks, the response contains the sub-command, a single byte of 1 and 2 bytes of 0xFFFF. The format of the Scratch Pad Image Check Response is:51440(24 Hours)6240(4 Hours)App Data Byte 0 2 2-nData App Code = Scratch Pad Image Check Resp (30)# of bad blocksList of Block Numbers, 1 byte eachDelta Data Type History Samp Interval (min)
Setup and Configuration 5-1SmartPoint Module for the Elster A3 Meter ECMTM400005 Setup and Configuration5.1 Electrical Configuration Interface5.1.1 Magnetic LoopWhen the CPU detects the presence of a modulated magnetic field, it prepares to receive a setup message. Immediately after successful programming, the transmitter sends 4 Meter Setup / Configuration (Type 0) messages in 60 seconds. The message is sent using mode commanded by the setup command and is then repeated in the mPass mode. The programming tool will wait a specified amount of time for this message to space programming message attempts. Following this message, a Meter / Setup Configuration message is transmitted on-air using the configured transmit mode every 60 seconds for 30 minutes.5.1.2 Optical Direct Serial Connection (optional) If the programming tool is directly connected to the device via the serial port, feedback to the setup commands is provided via serial reply messages in addition to the Meter Setup / Configuration (Type 0) messages sent on-air. 5.2 Configurable Parameters5.2.1 End Point IDThe 28-bit field representing an ID unique to each transmitter (up to 268 million possible ID’s). This field is set at the factory and is not programmable using the field setup tool.This connection should only be used by the manufacturing test fixture to prevent electrical shock.
Setup and Configuration 5-2SmartPoint Module for the Elster A3 Meter ECMTM400005.2.2 Meter Sample RateThe 3-bit field indicating how often the meter is read using the Elster interface. The meter is sampled without dither and is synchronized to the top of the hour by a real-time clock. The field is defined as shown in the table below (6-7 are reserved):5.2.3 Supervisory Transmit RateThe 5-bit field indicating how often RF messages are autonomously transmitted. RF Transmissions are randomly dithered in time from 0 to +/- 20% in time in order to avoid repetitive on-air collisions by different end-point devices. The field is defined as shown in the table below:Field Value Meter Sample Rate0 5 minutes115 minutes2 1 hour3 6 hours4 12 hours5 24 hours6 Reserved7 Factory SleepField ValueSupervisory Transmit Rate20%Variation Total Range0 1 minute 12 sec 48 – 72 sec1 5 minutes 1 min 4 – 6 min2 15 minutes 3 min 12 – 18 min3 30 minutes 6 min 24 – 36 min4 45 minutes 9 min 36 – 54 min5 1 hour 12 min 48 - 72 min6 1.5 hours 18 min 72 – 108 min7 2 hours 24 min 96 – 144 min8 2.5 hours 30 min 120 – 180 min9 3 hours 36 min 144 – 216 min10 3.5 hours 42 min 168 – 252 min11 4 hours 48 min 192 – 288 min
Setup and Configuration 5-3SmartPoint Module for the Elster A3 Meter ECMTM400005.2.4 Base Frequency ChannelAn 8-bit field which is used to set the base frequency for the device. This field sets the base frequency for all transmit, receive and boost mode channels. The Base Frequency is determined using the following equation:Base Frequency (MHz) = 409.6 MHz + (Base Frequency Channel * 12.8 MHz)5.2.5 Transmit Frequency Channels4 16-bit fields (13 used) representing Transmit Channels A, B, C, and D each from 0-8000 spanning 50 MHz of bandwidth in 6.25 KHz slots. The end point device transmits on all N channels in pseudorandom pattern, if a single channel is selected, transmitter uses single channel. The channels actually enabled for use are selected in the Transmit Channel Mask field. Channel A is always selected. The Transmit Frequency is determined using the following equation:12 4.5 hours 54 min 216 – 324 min13 5 hours 60 min 240 – 360 min14 5.5 hours 66 min 264 – 396 min15 6 hours 72 min 288 – 432 min16 7 hours 84 min 336 – 504 min17 8 hours 96 min 384 – 576 min18 9 hours 108 min 432 – 648 min19 10 hours 120 min 480 – 720 min20 12 hours 144 min 576 – 864 min21 18 hours 216 min 864 – 1296 min22 24 hours (1 day) 288 min 1152 – 1728 min23 36 hours (1.5 days) 432 min 1728 – 2592 min24 48 hours (2 days) 576 min 2304 – 3456 min25 60 hours (2.5 days) 720 min 2880 – 4320 min26 72 hours (3 days) 864 min 3456 – 5184 min27 86 hours (3.5 days) 1032 min 4128 – 6192 min28 Factory Sleep N/A Do not send Supervisory Messages29 CW Mode Test only, continuous tone out30 FCC Mode Test only, continuous modulated data out31 Fast Mode Test only, 3 test messages / second
Setup and Configuration 5-4SmartPoint Module for the Elster A3 Meter ECMTM40000Transmit Frequency (MHz) = Base Frequency (MHz) + (Transmit Frequency Channel * .00625)5.2.6 Receive Frequency ChannelA 16-bit field (13 used) representing the receive channel from 0-8000 spanning 50 MHz of bandwidth in 6.25 kHz slots. The Receive Frequency is determined using the following equation:Receive Frequency (MHz) = Base Frequency (MHz) + (Receive Frequency Channel * .00625)5.2.7 C&I Mode ChannelA 16-bit field (13 used) representing the C&I Channel from 0-8000 spanning 50 MHz in 6.25 KHz steps. The C&I Mode Frequency is determined using the following equation:C&I Mode Frequency (MHz) = Base Frequency (MHz) + (C&I Mode Channel * .00625)5.2.8 Priority Mode ChannelA 16-bit field (13 used) representing the Priority Mode Channel from 0-8000 spanning 50 MHz in 6.25 KHz steps. The Priority Mode Frequency is determined using the following equation:Priority Mode Frequency (MHz) = Base Frequency (MHz) + (Priority Mode Channel * .00625)5.2.9 Transmit Channel MaskA 3-bit field containing bit flags to indicate if Transmit Channels B, C or D are active. A 1 in a bit field indicates that that transmit channel is active. The following table defines the Transmit Channel Mask field: Bit Transmit Channel0 Transmit Channel B Active1 Transmit Channel C Active
Setup and Configuration 5-5SmartPoint Module for the Elster A3 Meter ECMTM400005.2.10 Transmit Operational ModeA 4-bit field containing the transmission mode of the Transmitter as shown in the table below. Note that if the device is configured to Message Pass, it will always transmit on the Receive Frequency (all mPass transmissions are on the Rx Channel). 5.2.11 Receiver Operational ModeA 3-bit field containing the Receiver Operational Mode of the device as shown in the table below (modes 3-7 are reserved):Setting Tx Op Mode Bits0 Normal Mode1 Message Pass2 Reserved3 Normal, ½ Baud Rate4 mPass / Normal Mix (1:1)5 mPass / Normal Mix (1:2)6 mPass / Normal Mix (1:3)7 mPass / Normal Mix (1:4)8 mPass / Normal Mix (1:5)9 mPass / Normal Mix (1:8)10 mPass / Normal Mix (1:16)11 Reserved12 Reserved13 Reserved14 Reserved15 ReservedSetting Rx Op Mode0 Disabled1 Listen Before Transmit (CSMA)2 Listen Always
Setup and Configuration 5-6SmartPoint Module for the Elster A3 Meter ECMTM400005.2.12 Enable Encryption5.2.13 Programmer IDA 16-bit field code containing the Id number of the handheld programming device that set up this device.5.3 Setup Messages5.3.1 Setup MessagesThe end point device is configured via several setup messages which are defined in the following sections and are listed in the following table:Setting AE-256 Encryption0Off1OnType Message0x91 Status Request0x92 Set Device Id0x93 Static Setup0x94 Set TCXO Correction0x95 Set Latitude / Longitude0x96 Set A/D Converter Calibration0x97 Set Voltage Quality Thresholds0x98 Set Encryption Key0x99 Set Real Time0x9A Send Data0x9C Ping0x9D Set Customer Meter Number0x9E Set Customer ID0xAF Reset FlexNet Module0xD0 Test Command0xD1 Command Pass Through
Setup and Configuration 5-7SmartPoint Module for the Elster A3 Meter ECMTM400005.3.2 Basic Command Message FormatAll setup command messages (setup tool to device) with have the following basic format:CRC is a 16-bit CRC of all of the previous fields, the algorithm used is CCITT-16 (0x1021 or 0x8408 reversed).The remainder is initialized to all 1's (0xFFFF) and the CRC is inverted before being sent, MSB first. On the following page is a sample C routine which implements the algorithm using the "reversed" technique:Byte 0 1 2 3 4->n n+1, n+2Description Sync Address Command Type Length Data CRCValue 0x1b 0xff 0x9n # Bytes in Data Field
Setup and Configuration 5-8SmartPoint Module for the Elster A3 Meter ECMTM40000WORD crc16_lsb(BYTE *pData, WORD length) { BYTE i; WORD data, crc; crc = 0xFFFF; if (length == 0) return 0; do { data = (WORD)0x00FF & *pData++; crc = crc ^ data; for (i = 8; i > 0; i--) { if (crc & 0x0001) crc = (crc >> 1) ^ 0x8408; else crc >>= 1; } } while (--length); crc = ~crc; return (crc); }For example, a Status Request command:1b ff 91 00Would generate the following CRC:1c 39The complete message would be as follows:1b ff 91 00 1c 39
Setup and Configuration 5-9SmartPoint Module for the Elster A3 Meter ECMTM400005.3.3 Basic Reply Message FormatReply Messages are only sent in response to a command, and are only sent if a direct serial connection is present (serial Reply Messages are NOT sent if the magnetic programming loop interface is used, responses can be gathered via the on-air Meter Setup / Configuration Message). All setup command messages (setup tool to device) with have the following basic format, the CRC field definition is the same as for Command Messages:5.4 Status Request (0x91)Request the current endpoint device configuration information (direct serial connection only). The command has the following format: The data field reply has the following format (a detailed description of each individual field can be found in section ):Byte 0 1 2 3 4 5->n n+1, n+2Description SyncAddressReply TypeLengthData Sta-tusDataCRCValue 0x1b0x01Matches Com-mand# Bytes in Data FieldBit 7: Ack/Nack (0/1)Bit 0: EEROM FailureMsg Type Length CRC0x91 0 0x391cByte (Bits) Field4(0) Status EEROM Write Failed(1)4(1:6) (Reserved)4(7) Status ACK(0) / NACK(1)5Firmware Version6Device Type7-10 Device Id11 (0:2) Meter Sample Rate11 (3:7) Supervisory Transmit Rate12 Base Frequency13-14 Transmit Channel A15-16 Transmit Channel B
Setup and Configuration 5-10SmartPoint Module for the Elster A3 Meter ECMTM40000The Real Time field contains the number of elapsed seconds since the top of the hour ( 0 -3599 ) from the perspective of the device.5.5 Set Device ID (0x92)Set the 28 bit device Id (factory only, not available in setup tool). The command has the following format: 17-18 Transmit Channel C19-20 Transmit Channel D21-22 Receiver Channel23-24 Boost Mode Channel25 (0:3) Boost Mode Sub-Channel25 (4) Boost Mode Hopping25 (5:7) Transmit Channel Mask26 (0:3) Transmitter Operational Mode26 (4:6) Receiver Operational Mode26 (7) Enable Encryption27-28 Programmer Id28 (7) Disable Compression29-30 TXCO Correction31-34 Latitude35-38 Longitude39-41 Meter Reading42 Minimum Click Duration43(0:5) Minimum Voltage Threshold43(6:7) Voltage Averaging Window44(0:3) Outage Time Threshold44(4:7) Restored Time Threshold45-46 Real TimeMsg Type Length Bytes 0-3 CRC0x92 4 Device IdByte (Bits) Field
Setup and Configuration 5-11SmartPoint Module for the Elster A3 Meter ECMTM40000The data field in the reply message has the 1 byte data status byte only in the following format:5.6 Device Static SetupSet all of the operational parameters of the device. The command has the following format: The Setup Data field has the following format (all multi-byte fields are sent lesat significant byte first):Byte (Bits) Field4(0) Status EEROM Write Failed(1)4(1:6) (Reserved)4(7) Status ACK(0) / NACK(1)Msg Type Length Bytes 0-17 CRC0x93 18 Setup DataByte (Bits) Field4 (0:2) Meter Sample Rate4 (3:7) Supervisory Transmit Multiple5 Base Frequency6-7 Transmit Channel A8-9 Transmit Channel B10-11 Transmit Channel C12-13 Transmit Channel D14-15 Receiver Channel16-17 Boost Mode Channel18 (0:3) Boost Mode Sub-Channel18 (4:7) Transmit Channel Mask19 (0:3) Transmitter Operational Mode19 (4:6) Receiver Operational Mode19 (7) Enable Encryption20-21 Programmer Id21(7) Disable Compression
Setup and Configuration 5-12SmartPoint Module for the Elster A3 Meter ECMTM40000The data field in the reply message has the 1 byte data status only.5.7 Set TCXO Correction (0x94)Set TCXO Correction frequency offset. The command has the following format: The data field in the reply message has the 1 byte data status only.5.8 Set Latitude/Longitude (0x95)Set the installation latitude and longitude. The command has the following format: The data field in the reply message has the 1 byte data status only.5.9 Set A/D Calibration (0x96)Set slope and intercept settings for analog to digital conversion . The command has the following format: The data field in the reply message has the 1 byte data status only.Msg Type Length Bytes 0-1 CRC0x94 2 TCXO Correc-tionMsg Type Length Bytes 0-3 Bytes 4-7 CRC0x95 8 Latitude LongitudeMsg Type Length Bytes 0-3 CRC0x96 4 A/D Conversion
Setup and Configuration 5-13SmartPoint Module for the Elster A3 Meter ECMTM400005.10 Set Voltage Quality Thresholds (0x97)Set the thresholds that control voltage quality based Alarm Messages. The command has the following format: The format of the Voltage Quality Thresholds is shown in the following table:The data field in the reply message has the 1 byte data status only.5.11 Set Encryption Key (0x98)Set the 128 bit Encryption Key. The command has the following format: The data field in the reply message has the 1 byte data status only.5.12 Set Real Time Clock (0x99)Set the current time to synchronize meter reading times. The command has the following format: The Elapsed Seconds field contains the number of elapsed seconds since the top of the hour ( 0 -3599 ) from the perspective of the host.The Current Hour represents the current real time hour (0-23 for midnight to 11:00pm).The Read Hour allows setting of the time that the meters that receive this message will read their associated meters if the supervisory rate is set to 6 hours or higher. The value is in hours plus 1 (1-24 for midnight to 11:00 pm). 0 means do not change current reading hour.Msg Type Length Bytes 0-1 CRC0x97 3 Voltage Quality ThresholdsByte (Bits) Field0 Minimum Click Duration1(0:5) Minimum Voltage Threshold1(6:7) Voltage Averaging Window2(0:3) Outage Time Threshold2(4:7) Restored Time ThresholdMsg Type Length Bytes 0-15 CRC0x98 16 Encryption KeyMsg Type Length Byte 0-1 Byte 2 Byte 3CRC0x99 2 Elapsed SecondsCurrent HourRead Hour
Setup and Configuration 5-14SmartPoint Module for the Elster A3 Meter ECMTM40000The data field in the reply message has the 1 byte data status only.5.13 Send Data (0x9A)Send a message using the device’s ID and frequency settings. The command has the following format:The data field in the serial reply message has the 1 byte data status only.5.14 Ping (0x9C)Ping the device, which responds with on-air commands. The command has the following format: The data field in the serial reply message has the 1 byte data status only.The Ping Type determines how the device will respond on air to the command as shown below:Msg Type Length Byte 0 Byte 1 Byte 2 Byte 3-30 CRC0x9A 31Repeat Level/Sta-tusApp Seq App Code App DataMsg Type Length Byte 0 CRC0x9C 1 Ping TypePing Type Device Response0 – Normal Ping On Air Command Ack Message1 – Configuration Ping On Air Binding MessageOn Air Static Setup MessageOn Air Meter Reading Message(3 second delay between messages)2 – Demand Read Ping On Air Meter Reading MessageOn Air Alarm Message(3 second delay between messages)3 – Handheld mPass Binding Ping – Buddy AllowedmPass On Air Binding Message – Repeat bits cleared to allow buddy4- Handheld mPass Binding Ping – Buddy DisabledmPass On Air Binding Message – Repeat Level set to 1 to block buddy5 – Alarm Ping On Air Alarm Message6 – Handheld mPass Alarm Ping – Buddy DisabledmPass On Air Alarm Message – Repeat Level set to 1 to block buddy
Setup and Configuration 5-15SmartPoint Module for the Elster A3 Meter ECMTM400005.15 Set Customer Meter Number (0x9D)Set the 13 byte ASCII Customer meter number. The command has the following format: The data field in the serial reply message has the 1 byte data status only.7 – Handheld mPass Demand Read Ping – Buddy DisabledmPass On Air Demand Read Message – Repeat Level set to 1 to block buddy8 – Meter Read Mes-sageOn Air Meter Reading Message (no alarms)9 – Full Tier Data Meter ReadSend Meter Reading Message followed by available Tier Messages10- Test Meter Read On Air Meter Reading Message (no alarms) preceded by a meter reading11 – Single Tier Data Meter ReadSingle Tier Data Message – The byte after the ping type contains the Tier Information byte for the desired tier. Note: Does not re-read meter.14 – Extended Setup On Air Extended Setup Message15 – Setup On Air Static Setup Message16 – Binding On Air Binding Message20 – Single Tier Data Meter Read, re-read meterSingle Tier Data Message – The byte after the ping type contains the Tier Information byte for the desired tier. Note: Does Re-read meter.21 – Demand History On Air Demand History Message23 – LP Meta Data On Air LP Meta Data Message24 – LP Block Data On Air LP Block Messages - The byte after the ping type contains the requested block. As many messages as are required to send a complete block are sent25 – LP Block Data – Single MessageSingle On Air LP Block Message - The byte after the ping type contains the requested block. The following byte contains the mes-sage number (0, 1, 2, 3)Msg Type Length Byte 0 CRC0x9D 13 Customer Meter NumberPing Type Device Response
Setup and Configuration 5-16SmartPoint Module for the Elster A3 Meter ECMTM400005.16 Set Customer ID (0x9E)Set the 4 bit Customer Meter ID number used for routing and customer differentiation in a local market. The command has the following format: The data field in the serial reply message has the 1 byte data status only.5.17 Send Data CommandsThe end point device can be commanded to transmit data via one of the commands which are defined in the following sections and are listed in the following table. Two replies are sent in response to Send Data Commands, one before transmission, one following transmission. If a send data command is not accepted (NACK’ed), only one reply is sent.Send Data (0x9A): Send a message using the device’s Id and frequency settings.The data field in the reply message has the 1 byte data status only.Send Whole (0x9B): Send a message using the provided Id and frequency settings.Msg Type Length Byte 0 CRC0x9E 1 Customer IDType Message0x9A Send Data0x9B Send WholeMsg Type Length Byte 0 Byte 1Byte 2Byte 3-30 CRC0x9A 31Repeat Level/ StatusAppSeqAppCodeApp DataMsg Type Length Byte 0-38 CRC0x9B 39 Command Bytes( see table below )Byte (Bits) Field0 (0:3) Transmitter Operational Mode0 (4) Disable Base Station Rx0 (5:6) (reserved)0 (7) Enable Encryption1 Base Frequency
Setup and Configuration 5-17SmartPoint Module for the Elster A3 Meter ECMTM40000The data field in the reply message has the 1 byte data status only.2-3 Transmit Channel4-7 Device Id8 Repeat Level / Status9App Seq10 App Code10-38 App DataByte (Bits) Field
Receiver Section 6-1SmartPoint Module for the Elster A3 Meter ECMTM400006 Receiver SectionThe device receiver section may be de-populated to reduce cost for a transmit only version using the same printed circuit layout.6.1 Receiver Requirements6.1.1 Operation ModesReceivers always listen for messages on a line powered end-point. Battery operated receivers listen for message only after transmitting a message. The associated tower receiver queues up commands to battery powered end-points and transmits them only after reception of an end-point message with matching ID.6.1.2 RF Link RequirementsUses the end point Repeat mode modulation format.6.1.3 Sensitivity-109 dBm @ 4800 Baud6.1.4 DiversityTemporal only, Interleaved and ½ bit rate Viterbi convolutionally encoded with constraint length K=3.6.2 Receiver On Air Command Messages6.2.1 Command TypesThe Receiver can accept the Application Code 7 Command Messages with the following Command Types. The format of the data in the actual fields is the same as previously defined unless otherwise stated. The address (Id Number) in the command is always that of the final destination. The tower may add a Buddy Address for routing purposes if necessary. When the device receives a command with its address in the Buddy Address field, it will repeat the command on the mPass channel to provide an extra hop for out of range devices.Type Description Broadcast Group0 Command Acknowledge N/A N/A1 Set Static Setup No Yes2 Set Crystal Offset No No3 Set Lat / Long No No4 Set Voltage Quality Settings Yes Yes5Set Time Yes No6 Load Shed Yes Yes
Receiver Section 6-2SmartPoint Module for the Elster A3 Meter ECMTM400006.2.2 Command AcknowledgeA message to acknowledge a previously transmitted message by the device. The message has the following format:7 Demand Read Yes Yes8Ping No Yes9 Set Transmitter Id No No10 Set Customer Id No Yes11 Set Encryption Key Yes Yes12 Set Preferred Buddy No No13 Set Customer Meter Number No No17 Demand Reset No Yes19 Set Group Address No No20 Delay Supervisory Transmis-sionsYes NoByte (Bits) Field0 Repeat Level / Status1 App Sequence 2 App Code: 7 – Command Message3 Command Type: 0 – Command Acknowledge4 Command Type being Acked (MSB Set if App Code is being Ack’ed by tower)5 (0:4) Rf Sequence Number of Command5(5) Reply To Programmer (1 / 0 ) (Reply from Tower Only)5(6) Reply From Tower ( 1 / 0 ) (Reply from Tower Only)5 (7) Ack / Nack ( 0 / 1 )6 Auxiliary Status7 App Sequence Number of Command8 Signal Level of Command ( 0 -255 dB)9 Noise Level of Command ( 0-255 dB)10-11 Programmer Id (Reply from Tower Only)
Receiver Section 6-3SmartPoint Module for the Elster A3 Meter ECMTM40000The definition of the Auxiliary Status and (reserved) fields can be defined differently for different Command Types. They are set to 0 unless otherwise specified per command Type.6.2.3 Set Static SetupA command to force the device update its static setup:6.2.4 Set TCXO CorrectionA command to force the device update its crystal offset setting:12 Setup Flags (Reply from Tower Only)13-31 (reserved)Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 1 – Static Setup4-7 Buddy Routing Address8-25 Static Setup Data26-31 (reserved)Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 2 – Crystal Offset4-7 Buddy Routing Address8-9 TCXO Correction10-31 (reserved)
Receiver Section 6-4SmartPoint Module for the Elster A3 Meter ECMTM400006.2.5 Set Latitude and LongitudeA command to force the device update its position:6.2.6 Set VoltVoltage Quality settings:Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 3 – Set Lat / Long4-7 Buddy Routing Address8-11 Latitude12-15 Longitude16-31 (reserved)Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 4 – Set Voltage Quality Set-tings4-7 Buddy Routing Address8 Minimum Click Count Duration9(0:5) Minimum Voltage Threshold9(6:7) Voltage Averaging Window10(0:3) Outage Time Threshold10(4:) Restored Time Threshold11-31 (reserved)
Receiver Section 6-5SmartPoint Module for the Elster A3 Meter ECMTM400006.2.7 SetA command to reset the real time clock of the device:The Elapsed Seconds field contains the number of elapsed seconds since the top of the hour ( 0 -3599 ) from the perspective of the host.The Hour of the Day represents the current real time hour (0-23 for midnight to 11:00pm).The Read Hour allows setting of the time that the meters that receive this message will read their associated meters if the supervisory rate is set to 6 hours or higher. The value is in hours plus 1 (1-24 for midnight to 11:00 pm). 0 means do not change current reading hour.6.2.8 On Demand Read / Drive By ReadA command to force the device to transmit its latest meter data. If the address is set to Broadcast (0xffffff) the unit will wait 0 to Maximum Dither seconds inversely proportional to received SNR.Mode and Maximum Dither are only valid for Drive By Reads.Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 5 – Set Time4-7 Buddy Routing Address8-9 Elapsed Time (in seconds) Since Top of The Hour ( 0 – 3599 )10 Hour of the Day (0 – 23)11 Read Hour +1 (1-24) (0=don’t change current Read Hour)12-31 (reserved)Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 7 – Demand Read4-7 Buddy Routing Address8 Mode (0 – Normal Mode; 1 – mPass Mode)9 Maximum Dither (0-255 seconds)10-31 (reserved)
Receiver Section 6-6SmartPoint Module for the Elster A3 Meter ECMTM400006.2.9 PingA command that with no setup information that only causes the device to respond with ack message or set of messages.Ping Type: Determines how the device will respond on-air to the command as shown below:Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 8 – Ping4-7 Buddy Routing Address8 Ping Type9-31 (reserved)Ping Type Device Response0 – Normal Ping On Air Command Ack Message1 – Configuration Ping On Air Binding MessageOn Air Static Setup MessageOn Air Meter Reading Message(3 second delay between messages)2 – Demand Read Ping On Air Meter Reading MessageOn Air Alarm Message(3 second delay between messages)3 – Handheld mPass Binding Ping – Buddy AllowedmPass On Air Binding Message – Repeat bits cleared to allow buddy4- Handheld mPass Binding Ping – Buddy DisabledmPass On Air Binding Message – Repeat Level set to 1 to block buddy5 – Alarm Ping On Air Alarm Message6 – Handheld mPass Alarm Ping – Buddy DisabledmPass On Air Alarm Message – Repeat Level set to 1 to block buddy7 – Handheld mPass Demand Read Ping – Buddy DisabledmPass On Air Demand Read Message – Repeat Level set to 1 to block buddy8 – Meter Read Message On Air Meter Reading Message (no alarms)9 – Full Tier Data Meter Read Send Meter Reading Message followed by available Tier Messages
Receiver Section 6-7SmartPoint Module for the Elster A3 Meter ECMTM400006.2.10 Set Transmitter IdA command to change the endpoints transmitter id.10- Test Meter Read On Air Meter Reading Message (no alarms) preceded by a meter reading11 – Single Tier Data Meter Read Single Tier Data Message – The byte after the ping type contains the Tier Information byte for the desired tier. Note: Does not re-read meter.14 – Extended Setup On Air Extended Setup Message15 – Setup On Air Static Setup Message16 – Binding On Air Binding Message20 – Single Tier Data Meter Read, re-read meterSingle Tier Data Message – The byte after the ping type contains the Tier Information byte for the desired tier. Note: Does Re-read meter.21 – Demand History On Air Demand History Message23 – LP Meta Data On Air LP Meta Data Message24 – LP Block Data On Air LP Block Messages - The byte after the ping type contains the requested block. As many messages as are required to send a complete block are sent25 – LP Block Data – Single Mes-sageSingle On Air LP Block Message - The byte after the ping type contains the requested block. The following byte contains the message number (0, 1, 2, 3)Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 9 – Set Transmitter Id4-7 Buddy Routing Address8-11 New Transmitter Id12-31 (reserved)
Receiver Section 6-8SmartPoint Module for the Elster A3 Meter ECMTM400006.2.11 Set Customer IdA command to set the 4 bit customer id.6.2.12 Set Encryption KeyA command to set the 16 byte encryption key.Byte (Bits)Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 10 – Set Customer Id4-7 Buddy Routing Address8 (0:3) Customer Id9-31 (reserved)Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 11 – Set Encryption Key4-7 Buddy Routing Address8-23 16 byte, 128 bit Encyption Key24-31 (reserved)
Receiver Section 6-9SmartPoint Module for the Elster A3 Meter ECMTM400006.2.13 Set Preferred Buddy IdA command to set the 4 byte preferred buddy address for this meter.6.2.14 Set Company Meter NumberA command to set the 13 byte customer number.Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 12 – Set Preferred Buddy Id4-7 Buddy Routing Address8-11 Preferred Buddy Address12-31 (reserved)Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 13 – Set Company Meter Num-ber4-7 Buddy Routing Address8-21 ASCII Customer Meter Number22-31 (reserved)
Receiver Section 6-10SmartPoint Module for the Elster A3 Meter ECMTM400006.2.15 C&I Read C12.19 DataA command to read raw C&I Table data.6.2.16 C&I Write C12.19 DataA command to write raw C&I Table data.Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 15 – Read C&I Meter Data4-7 Buddy Routing Address8-9 C12.19 Table Number10-12 Table Offset13 # Bytes to Read (0-27)14-31 (reserved)Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 16 – Write C&I Meter Data4-7 Buddy Routing Address8-9 C12.19 Table Number10-12 Table Offset13 # Bytes to Write (0-17)14-31 Raw bytes to write
Receiver Section 6-11SmartPoint Module for the Elster A3 Meter ECMTM400006.2.17 C&I Demand ResetA command reset the Demands in the C&I Tables.6.3 Command AddressingThe Receiver will accept commtches its own Device Id and one using the Broadcast Address, which is all 1’s or 0xFFFFFF. Broadcast messages are not acknowledged.6.4 Receiver Miscellaneous6.4.1 MiscellaneousCSMA, RSSI listen before talk, which reduces collisions CSMA, allows coexistence if a channel in a shared FCC band.6.4.2 PollingA line power receiver enabled end point device may be polled by a tower or a specially equipped moving vehicle (Drive By). The poll may be a point address or broadcast. Broadcast causes all end point devices in listening range to delay for a pseudorandom time then report. The maximum delay is 60 seconds.Byte (Bits) Field0 Repeat Level / Status1 App Sequence2 App Code: 7 – Command Message3 Command Type: 17 – Demand Reset4-7 Buddy Routing Address8-31 (reserved)
FlexNet SmartPoint Radio Overview A-1SmartPoint Module for the Elster A3 Meter ECMTM40000Appendix A FlexNet SmartPoint Radio OverviewThe Sensus FlexNet SmartPoint module provides wireless communication capability to electric utility meters. The SmartPoint module interrogates the meter registers on a programmable interval from five minutes to daily readings. The SmartPoint module then transmits the meter consumption and status information at regular intervals. The number of times the SmartPoint transmits is decoupled from the read setting, allowing for either greater number of transmissions per read, or fewer. In the case of a daily read, the SmartPoint can be programmed to transmit every six hours—providing the same information four times throughout the day. A.1 SmartPoint Power Failure Detection and Alarm The SmartPoint detects power failures at the meter location and sends an alarm message. A.1.1 Power Fail Detection The SmartPoint microprocessor (µC) monitors the power fail signal from the display board, and on power fail, the µC sleeps all hardware and waits the Outage Time Threshold amount of time plus a pseudo random interval of 0 to 152 seconds and then sends an Alarm power fail report message. The on-board power-supply capacitor stores enough energy for at least one Alarm power fail transmission. The board will continue to send additional Alarm power fail messages at 0 to 48 second pseudo random intervals until the capacitor is drained. A.1.2 Power Restoration Notification Upon power restoration, the SmartPoint µC waits the Power Restore Time Threshold amount of time and then sends 6 pseudo randomly timed Alarm Power Restore messages, followed by a meter read message with the power restore flag set. A.1.3 Brown-Out Detection The alarm and voltage fields from the sensor board are monitored for brown-out (low voltage detect). The Brown-out voltage is set via the SmartPoint Minimum Voltage Alarm Threshold. If the AC voltage drops below this threshold, the Brown Out bit will be set in the next transmitted on-air message. A.2 Operating Frequencies of SmartPoint/TGB Devices The TGB receiver may operate over two frequency ranges (at its LNA input) dependent on the RF card hardware version installed in the TGB. The frequency range given is further constrained by the actual pass band of the duplexer/preselector filter used between the LNA and the TGB antenna. • TGB Receiver Operating Frequency: 896 To 902 MHz (Range 1) OR 928 To 935 MHz (Range 2) • The operating frequency range is selected based on whether the TGB will be operating under FCC Part 24 NBPCS or Part 90 SMR (Range 1) or FCC Part 101 MAS (Range 2). The TGB Transmitter may operate over the following frequency range independent of RF card Hardware Version. • TGB Transmitter Operating Frequency: 930 to 960 MHz • The transmitter operating frequency is further constrained based on the pass band of the duplexer filter which connects between the transmitter output and the antenna.
FlexNet SmartPoint Radio Overview A-2SmartPoint Module for the Elster A3 Meter ECMTM40000It is important to specify the actual operating frequency range of the TGB when it is ordered so the correct RF card frequency range is delivered to the installation. A.2.1 Systems Operating Under Part 24 of FCC Rules (Narrow-Band PCS)US NBPCS Frequency: • Inbound:901.125 MHz ±25 KHz • Outbound:940.125 MHz ±25 KHz A.2.2 Systems Operating Under RSS-134 in Canada (Narrow-Band PCS) Canadian NBPCS Frequency: • Inbound:901.625 MHz ±25 KHz • Outbound:940.125 MHz ±25 KHz The operating frequencies stated above are the center of the bandwidth in which Sensus is licensed to operate. For example, in the US, the operating bandwidth Sensus may use starts at 901.1 MHz and stops at 901.15 MHz. We define the center frequency of the licensed bandwidth as FCInbound and FCOutbound for the discussions below. For example, in the US for the NBPCS operating frequencies FCInbound would be 901.125 MHz and FCOutbound would be 940.125 MHz. A.3 SmartPoint Radio Transmit Modes The SmartPoint module can communicate to the TGB in three different modes: •Normal mode allows for direct communication to the TGB, •Poll/Response mode or clear channel for responses from tower commands, •mPass or “Buddy” mode allows for indirect communication from the meter to the TGB via other meters. The first two communication modes are direct, SmartPoint module to TGB, while the last provides the greatest flexibility in a two-way system. A SmartPoint device may also transmit to other SmartPoint devices with mPass modulation, utilizing the channels described above. This mode allows a meter to repeat another meter (message pass, thus mPass) that is out-of-range of the TGB receiver due to installation constraints (i.e. transmitter is mounted in a basement or other environment that obstructs its signal path back to the TGB). It also allows the TGB to communicate with a blocked meter through another SmartPoint device. Meters that receive mPass modulated messages from blocked meters repeat those messages to the TGB utilizing boost, ½ baudrate or normal modulation modes (and frequencies, i.e. the lower frequency of the frequency pair). TGB communication to blocked meters through SmartPoint™ devices that are passing messages utilizes mPass modulation (and frequencies, i.e. the higher frequency of the frequency pair) from the TGB to the repeating SmartPoint™ meter and from the repeating SmartPoint™ meter to the blocked meter. The mPass modulation is only utilized in the frequency channels that occupy the upper frequency of the frequency pair. The boost, ½ baudrate, and normal modes of modulation are only utilized on the frequency channels that occupy the lower frequency of the frequency pair. The mPass modulation is also used by the TGB to communicate with all SmartPoint devices in the field.
FlexNet SmartPoint Radio Overview A-3SmartPoint Module for the Elster A3 Meter ECMTM40000 A.3.1 Normal Mode Normal mode, as its name implies, is the preferred mode of transmitter operation for the SmartPoint when the SmartPoint is operating in a 25 KHz channel (13.6 KHz if operating under FCC Part 90 Rules). Normal mode is utilized by the SmartPoint for the RF path from the SmartPoint to the TGB. Three normal mode communication methods are used to collect SmartPoint™ meter data, Staggered Transmissions, Real-time, and Poll-respond, as described briefly below. A.3.1.1Staggered Transmissions Hourly and daily meter read messages and bulk status information transit times are determined via time randomizations to cause the network to behave like an ALOHA-modeled network: • Data required on a daily basis (Normal mode 111 ms), 20 tower receivers can read 1.4 million hourly meters. • Real-time, Report-by-exception, Status and Alarm Information • Data generally required in seconds or minutes:• If power available (240 VAC or battery):• Alarms reported immediately;• Alarms reported redundantly (1 to 32 times until Ack).• If power not available (limited to capacative power supply):• 3 to 6 redundant transmissions occur in dialated time intervals,• 30 sec. average initial message report, and• Faster reporting intervals can be selected (application dependent). A.3.1.2Poll-response Message Traffic • Data generally required in real-time (Poll 158 ms and Respond 111 ms, 50 bytes):• C&I meter traffic,• Demand reads, and• SCADA/Distribution Automation. A.3.2 Poll/Response Mode Poll/Response mode is the preferred mode of transmitter operation for the SmartPoint when the SmartPoint is operating in an authorized bandwidth narrower than 20 KHz. Poll/Response mode is identical to Normal mode with the exception that its data rate and its deviation is one-half of Normal mode, and is utilized by SmartPoint devices for the RF path from the SmartPoint to the TGB. A.3.3 mPass or “Buddy” Transmit Mode mPass (message pass) Transmit Mode allows a meter that cannot reach a TGB directly to use its neighboring two-way SmartPoint modules to repeat its message. Generally, communications between meters and FlexNet tower-mounted receivers is not a problem because of FlexNet tower heights. However, in some few installations, the meter-to-tower signal path may be obstructed by objects that significantly attenuate the SmartPoint transmitter signal. A single TGB can cover 70,000 SmartPoint devices, dependant upon meter and TGB configuration.
FlexNet SmartPoint Radio Overview A-4SmartPoint Module for the Elster A3 Meter ECMTM40000In these locations, the mPass mode communications method is used. The mPass mode also is the modulation type used by the TGB when it communicates with any SmartPoint device. These communications constitute (but are not limited to): • Timekeeping chores (allowing the EMD to set its internal clock, correcting for EMD crystal aging by re-tuning the EMD RF frequency within 50 Hz, etc.), • Polling tasks (gathering data from an individual EMD such as rate tables etc.), and • Command execution (turning electricity off or on, etc.). SmartPoint meters, capable of using Normal mode operation, receive using mPass modulation from the TGB and other meters which may not be able to communicate with the TGB, and transmit using 7FSK modulation back to the TGB. These units transmit on the same frequency the TGB uses for its receive operation. SmartPoint meters that are relying on mPass mode to communicate to the TGB through another SmartPoint device, utilize mPass modulation for both receive and transmit operations. They transmit on the same frequency that the TGB utilizes for transmission. A SmartPoint device that cannot communicate directly with a FlexNet tower is considered an Out of Range Device (ORD). A SmartPoint device that can communicate directly with a FlexNet tower is considered a candidate to be configured as a “Buddy Device.” Unlike other communications, no routing information is necessary for the Buddy message to be repeated. Any meter that hears the Buddy message will repeat using a pseudo random algorithm to minimize network loading. Upon reception at the TGB of a Buddy message, the TGB broadcasts a quench signal informing other meters still waiting to repeat the message that it has been received and they should no longer attempt to repeat the message.
FlexNet SmartPoint Radio Overview A-5SmartPoint Module for the Elster A3 Meter ECMTM40000 A.3.3.1Buddy Mode Using mPass Transmissions Figure A-1: Remote SmartPoint to Tower mPass Buddy Mode SchematicFigure A-1shows how a remote SmartPoint device out-of-range of any tower, an ORD, can send messages in mPass mode to other Buddy transceivers, which then relay the ORD messages on to the tower. 1. The out-of-range transceiver (or transmit only device) sends an mPass modulated message which is received by multiple Buddy transceivers. Each Buddy queues the message to be repeated with a timeout inversely proportional to the signal-to-noise ratio (SNR) of the message it received, plus a small pseudo random amount. Closer Buddy transceivers will have a shorter timeout. 2. The first Buddy to timeout and repeat the message sends it directly to the tower on the Normal mode channel. If the tower does not hear the repeated message, nothing happens until the next Buddy timeout occurs and the next buddy repeats the message. 3. Once the tower hears a repeated message from a Buddy, it sends an acknowledge (Ack) message with the ID of the repeated message, which causes all Buddy devices with a message still queued from that ID to eliminate that message from their queue. This minimizes the number of times the message is repeated on air. A.3.3.2Tower mPass Buddy Mode to ORD Command Transmissions Figure A-2 exhibits how a remote SmartPoint device that is out-of-range of commands from a tower can receive those commands via a Buddy relay of the message.
FlexNet SmartPoint Radio Overview A-6SmartPoint Module for the Elster A3 Meter ECMTM40000Figure A-2: Remote Tower to SmartPoint mPass Buddy Mode Schematic1. The tower sends an mPass-modulated message with the address of the out-of-range transceiver as the primary address, and the address of the desired relaying Buddy as the Buddy Routing Address. The Buddy receives the message and identifies it as one the Buddy is commanded to relay. 2. The Buddy transmits the repeated message in the mPass channel to the out-of-range transceiver. A.4 SmartPoint Data Security The FlexNet system is designed with total data security in mind. Sensus is acutely aware that meter reads, customer data, and telemetry data is highly confidential, and extends every effort to ensure the protection and integrity of that data. For the protection of customer meter-read data, all meter data can be encrypted at the meter and remains encrypted throughout the entire communications path until it is inserted into the utility database, safely inside the utility customer firewall. A.4.1 SmartPoint Radio Data Security The SmartPoint radio module is designed to integrate directly into the registers of the host meter. Register values are read from the meter and encoded into a message inside the SmartPoint radio module. This message is then mangled in a convolution algorithm, and then encrypted with the system WEP key, 128 bit, for transmission. In addition, each RF packet is tagged with a sequence number that allows detection of attempted tampering. Lastly, the proprietary SmartPoint 7-FSK modulation is not public domain. It is not recognizable by a spectrum analyzer and no off-the-shelf equipment can be purchased to demodulate it. A.4.2 TGB Data Security Once data has arrived at the TGB, additional security measures are added. Data is stored only for the period of time needed to ensure accurate transmission over the backhaul link to the RNI. Data stored in the TGB remains encrypted, and the encryption keys are never stored on the same device as the data. All communications between the TGB and the RNI occurs over encrypted channels. No data is ever sent over any network, public or private, in clear text. All backhaul network interactions are conducted over SSL tunnels using AES-256 encryption.
FlexNet SmartPoint Radio Overview A-7SmartPoint Module for the Elster A3 Meter ECMTM40000 A.4.3 RNI Data Security The meter data stream is terminated at the RNI, where it is received via a secure, encrypted tunnel from the TGB. The actual meter readings are decrypted at this point using the WEP keys, and inserted into the utility customer-controlled meter-read database. A.4.4 Separation of Customer Data Another unique feature of the FlexNet system is the separation of customer data from network telemetry. This separation, which occurs at the RNI, ensures that customer data is directed to the utility database, and network telemetry and housekeeping data is directed to the network operations database. Personal customer data, such as names and street addresses, are never mixed into the network operations database, ensuring that utilities control the access to information that can personally identify customers.
Specifications B-1SmartPoint Module for the Elster A3 Meter ECMTM40000 Appendix B SpecificationsB.1 External AC Line Power•DC Supply A: 13 VDC +/- 1V, 150mA max•Maximum Message Duration: Supported by supply capacitor, 200 msB.2 Current ConsumptionThe end point device shall have three modes of operation and a different current requirement for each. •Quiescent Mode: Normal quiescent state. Entered during periods of no input or reading activity to charge capacitor, microprocessor and local high speed crystal always running. The TCXO and other peripherals are off in this state. In this state an additional 9 mA is available for charging the transmit capacitor. ICharge ≤ 6 mA @ the 36 V rectified voltage source.•Receive Mode: (Optional) A duty cycled state entered to detect if an incoming message is occurring, and, if so, to receive that message. IReceive ≤ 25 mA @ the 3.3 V supply.•Pre-Transmit Mode: Before transmission, the uC powers up TCXO, Synthesizer, VCO, and other RF circuitry before actively transmitting. The current consumption in this mode will be IPre-Transmit ≤ 30 mA @ the 3.3 V supply.•Transmit Mode: Entered when on air transmission is required. ITransmit ≤ 850 mA @ the 3.6 V switching regulator.B.3 Power Failure•Power Fail Transmission: Following power failure, as detected by a Power Failure IRQ signal from the iCon display board, the processor shall place the endpoint device into a low power mode until a programmable time limit up to 120 seconds (Outage Time Threshold). During this time, the device shall count the number of pulses on the Power Failure IRQ line and keep this information to report in an Alarm Message to report the outage. Once the Outage Time limit has been reached, the device shall wait an additional pseudo-random time (up to 152 seconds), at which time it shall transmit an Alarm Message.•Power Restored Detection: Once power has been restored (as determined by no Power Fail IRQ signals being sent by the iCon and the Minimum Voltage Level being exceeded) for longer than the Power Restored Time Threshold, the device shall wait an additional pseudo-random time (up to 160 seconds) at which time it shall send an Alarm Message indicating Power Restored.
Specifications B-2SmartPoint Module for the Elster A3 Meter ECMTM40000B.4 Internal Power SuppliesB.4.1 Micro Power RegulatorAlways on, supplies power to CPU, VCO, Buffer Amplifier, Synthesizer, TCXO, and Receiver (if implemented).•Drop Out: 60mV @ 50 mA load•Minimum Voltage Input: 3.4V•Maximum Voltage Input: 3.8V•Voltage Output: 3.3VB.4.2 DC to DC ConverterEnabled during transmit operation. •Efficiency: 65% Minimum (70% typical)•Drop Out: 2 V maximum under 850 mA load•Converter Ripple: ≤ 100mV•Converter Impulse Response: 750 mA causes ≤ 20 mV spike (TBD)•Voltage Output: 3.6V +/- 5%B.5 Start Up Timing RequirementsAfter changing from Charge Mode to other modes, the device takes the following amounts of time for different components to be operational. •DC-DC Converter Stabilization: 10 msec•TCXO Stabilization: 10 msec•VCO Frequency Lock: 1.0 msec•Transmit RF Data: 1.0 msec
IndexSmartPoint Module for the Elster A3 Meter ECMTM40000IndexAAC power fail 2alarm data 18alarm messages 16alarmsclick count 16current meter reading 17data 18device temperature 17extended time since event 17lock errors 17microprocessor status 17power failure 1time of last power failure 18time since event 16total number of outages 18voltage phase 16App code 1 2, 9App code 5 3App code 7 5App code 8 6application code 3application codesalarm data 18alarm messages 16buddy message 6click count 16coincident reading 13command message 5compression enabled 8compression enabled history 9cumulative demand 13current meter reading 8, 17data flags/peak demand time 12delta data type 8demand history 19, 23demand reading 13demand resets 13device temperature 17extended time since event 17last demand reset date & time 20last peak demand 20last peak demand reset date & time 20load profile block data 21load profile metadata 21lock errors 17meter setup/configuration 2meter type 12microprocessor status 17number of demand resets 20peak demand reading 9phase voltages 9quantity of tiers 14relative time stamp 8serial number 3service quality 14summation reading 13testing message 1tier information 11time of last power failure 18time since event 16total # of outages 18voltage phase alarms 16application data 3application fixed bin width history 10application sequence 3Bbase frequency channel 3basic command message format 7, 9basic reply message format 9battery low 2boost mode channel 4brown-out detection 1buddy id, receiver 9buddy message 6CC&I demand reset, receiver 11C&I read c12.19 data 10C&I table read 15C&I tablewrite 15click count 16coincident reading 13command acknowledge 2command message 5command messagesbasic status request 9C&I table read 15C&I table write 15demand reset 16device static setup 11ping 13set A/D calibration 12set customer id 15set customer meter number 14set device id 10set encryption key 12set installed latitude/longitude 12
IndexSmartPoint Module for the Elster A3 Meter ECMTM40000set real time clock 13set TCXO correction 12set voltage quality threshold 12command types, receiver 1company meter number 9component descriptions 1compression enabled 8compression enabled history 9configurable parameters 1base frequency channel 3boost mode channel 4enable encryption 6endpoint id 1meter sample rate 2programmer id 6receive frequency channel 4receiver operational mode 5supervisory transmit rate 2transmit channel mask 4transmit frequency channels 3transmit operational mode 5configuration interfacemagnetic loop 1optical direct serial connection 1control 2CRC 3cumulative demand 13current consumption 1current meter reading 8, 17customer id, receiver commands 8Ddata flags 12data security 6DC to DC converter 2delta data type 8demand history 19, 23last demand 20last demand reset date & time 20last peak demand reset date & time 20number of demand resets 20demand reading 13demand reset 16, 11demand resets 13demand, peak 9descriptionregister display board 1detection, brown-out 1device static setup 11device temperature 17diversity 1Eencryption key 8endpoint id 1endpoint id parameter 6external AC line power 1FFCC label 1FCC Part 24 2fixed bin width history 10FlexNet moduleoverview 1FlexNet networklocal network 2regional network interface 3SmartPoint module 2Tower Gateway Base Station 3FlexNet Systeminitialization 1FlexNet systemdescription 1frequencies 2FCC Part 24 2rss 134 2Hhazardous voltages 1IID number 1initialization. SmartPoint 1internal power supplies 2LlabelsFCC label 1labels and hardware 1last demand reset date & time 20last peak demand 20last peak demand reset date & time 20latitude and longitude 4length, message 2load profile block data 21load profile metadata 21lock errors 17Mmagnetic loop configuration interface 1message formaton air 1message leader 1meter reading, current 8meter sample rate 2meter setup/configuration 2meter type 12microprocessor status 17
IndexSmartPoint Module for the Elster A3 Meter ECMTM40000mPass mode 3Nnarrow-band PCS 2normal mode 3notification, power restoral 1number of demand resets 20Oon airtime requirements 3on air control fieldsAC power fail 2battery low 2payload encrypted 2power restore 2RF sequence number 2on air fieldsapplication code 3application data 3application sequence 3control 2CRC 3ID number 1length 2message leader 1repeat level/status 3sync 1on air message format 1on demand read 5operating frequencies 1operation modes 1optical direct serial connection 1overviewFlexnet module 1SmartPoint 1Ppayload encrypted 2PCS frequencies 2peak demand reading 9peak demand time 12phase voltages 9ping 13ping, receiver 6poll-response mode 3power fail detection 1power failure 1power failure alarm 1power restoral notification 1power restore 2preferred buddy id 9programmer id 6purpose, manual 1Qquantity of tiers 14Rradio data security 6receive frequency channel 4receiver command messages 1C&I demand reset 11C&I read c12.19 data 10C&I writer c12.19 data 10command acknowledge 2command types 1on-demand read 5ping 6set company meter number 9set customer id 8set encryption key 8set latitude and longitude 4set preferred buddy id 9set static setup 3set TCXO correction 3set time 5set voltage quality settings 4settransmitter id 7receiver miscellaneous 11receiver operational mode 5receiver polling 11receiver requirements 1diversity 1operation modes 1RF link requirements 1sensitivity 1regional network interface 3register display boarddescription 1relative time stamp 8repeate level/status 3requirements, on air time 3RF link requirements 1RF sequence number 2RNI data security 7RSS 134 2Ssafety 1securitydata 6radio security 6RNI data 7TGB data 6send data commands 16sensitivity 1serial number 3
IndexSmartPoint Module for the Elster A3 Meter ECMTM40000service quality 14set A/D calibration 12set company meter number 9set customer id 15set customer meter number 14set device id 10set encryption key 12set encryption key, receiver 8set installed latitude/longitude 12set latitude and longitude 4set preffered buddy id, receiver 9set real time clock 13set static setup 3set TCXO correction 12set TCXO correction, receiver 3set time 5set transmitter id 7set voltage quality settings 4set voltage quality threshold 12setup messages 6basic command message format 7basic reply message format 9command/reply message definitions 9SmartPointbrown-out detection 1Canadian narrow-band PCS 2data security 6initialization 1mPass mode 3normal mode 3operating frequencies 1overview 1poll-response mode 3power fail detection 1power restoral notification 1radio data security 6radio transmit modes 2RNI data security 7TGB data security 6U.S. narrow-band PCS 2SmartPoint frequenciesFCC Part 24 2RSS 134 2SmartPoint module 2SmartPoint power failure detection 1SmartPoint radio transmit modes 2specifications 1current consumption 1DC to DC converter 2external AC line power 1internal power supplies 2power failure 1startup timing 2startup timing 2status request 9summation reading 13supervisory transmit rate 2sync 1Ttemperature, device alarm 17testing message 1TGB data security 6tier information 11time of last power failure 18time since event 16time since event, extended 17total # of outages 18Tower Gateway Base Station 3transmit channel mask 4transmit frequency channels 3transmit modes 2transmit operational mode 5transmitter id, receiver commands 7Vvoltage phase alarms 16voltage quality settings 4Wwrite c12.19 data 10

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