Nortech ATR430P Automobile Tag Reader User Manual TAGAPEND8

Nortech International (PTY) LTD Automobile Tag Reader TAGAPEND8

Contents

users manual

Nortech International (Pty) LtdP O Box 4099 32A Wiganthorpe RoadWillowton Hub PietermaritzburgPietermaritzburg 3201 South Africa3200 South Africa Reg. No. 98/10951Tel: (033) 345 3456 Int. Tel: +27 33 345 3456Fax: (033) 394 6449 Int. Fax: +27 33 394 6449mkt@nortech.co.za www.nortech .co.zaAUTOTAG-PUSER MANUALNORTECH INTERNATIONAL (PTY) LTDAll rights reservedCopyright  1999Document No: 708UM0210-01Date of issue: October 1999This document is for information only and unless otherwise indicated, is not to form part of any contract. Inaccordance with the manufacturer’s policy of continually updating and improving design, specificationscontained herein are subject to alteration without notice.APPROVALSOriginator L. Grove / M.T. MaggsChecked: ______________________________ Date: __________________Engineering Manager: _____________________________Approved: ______________________________ Date: __________________Marketing: _____________________________Checked and approved: ______________________________ Date: __________________Date: dd/mm/yy Rev CRN No.22/07/98 00 045115/09/99 01 0640
708UM0210-01 October 1999 Autotag-P User Manual Page: 2 of 35Table of Contents1. INTRODUCTION...........................................................................................................................42. TECHNICAL DATA.......................................................................................................................62.1. System Parameters ................................................................................................................62.2. Autotag-P Base Station ATR430P series................................................................................62.2.1. Electrical...........................................................................................................................62.2.2. Mechanical.......................................................................................................................62.2.3. Environmental ..................................................................................................................62.2.4. RF Channel......................................................................................................................62.2.5. Communications...............................................................................................................72.2.6 Relay Outputs...................................................................................................................72.3. Autotag-P Tag Transponder AT430P......................................................................................82.3.1. Electrical...........................................................................................................................82.3.2. Mechanical.......................................................................................................................82.3.3. Environmental ..................................................................................................................82.3.4. RF Channel......................................................................................................................82.3.5. Code ................................................................................................................................92.4. Autotag-P Tag with Proximity Transponder.............................................................................93. FCC REGULATIONS..................................................................................................................104. OPERATING PRINCIPLES.........................................................................................................114.1. Radio Frequency Communications: Important concepts .......................................................114.1.2. Reflection and absorption...............................................................................................124.1.3. Noding and nulls.............................................................................................................124.1.4. Radiation pattern............................................................................................................134.2. Autotag-P Communications Architecture...............................................................................144.3. Coding..................................................................................................................................144.3.1 32 Bit User Data (Tag only) ............................................................................................144.3.2 16 Bit Installer Code.......................................................................................................154.3.3 8 Bit Distributor / OEM Code ..........................................................................................154.3.4 32 Bit Mask (Base Station Only).....................................................................................154.4 R.F. Communications between Base Station and Tag ..........................................................154.4.1. Poll from the Base Station..............................................................................................154.4.2 Response from the Tag..................................................................................................154.4.3 Acknowledge from the Base Station...............................................................................154.5. Communication Protocol Options..........................................................................................164.5.1 Wiegand Communication Protocol..................................................................................164.5.2 Clock&Data Communication Protocol.............................................................................164.5.3 RS-232 – Autotag-P Point-to-point Communication Protocol..........................................174.5.4 RS-485 – Nortech Multi-drop Communication Protocol...................................................17
708UM0210-01 October 1999 Autotag-P User Manual Page: 3 of 335. INSTALLATION..........................................................................................................................185.1. Base Station .........................................................................................................................185.1.1 General description ........................................................................................................185.1.2. Autotag-P Base Station Packing List ..............................................................................185.1.3. Installation......................................................................................................................195.1.4. Wiring.............................................................................................................................205.2 Tag .......................................................................................................................................215.2.1. General description ........................................................................................................215.2.2. Positioning......................................................................................................................215.2.3 Mounting ........................................................................................................................215.3. Base Station Configuration Options ......................................................................................225.3.1 Base Station DIPSwitch settings:....................................................................................235.3.2 Range adjustment: .........................................................................................................255.3.3 Internal Diagnostic LED:.................................................................................................255.3.4 External Indicator Drivers ...............................................................................................255.4. Commissioning .....................................................................................................................256. CONFIGURATION......................................................................................................................276.1. Wiring Detail .........................................................................................................................277. CUSTOMER FAULT ANALYSIS ................................................................................................28APPENDIX A – WIRING DIAGRAMMS.............................................................................................30APPENDIX B – GOOSENECK MOUNTING PLATE.........................................................................33
708UM0210-01 October 1999 Autotag-P User Manual Page: 4 of 33{tc ""}1. INTRODUCTIONThe Autotag-P is a long range, hands free, vehicle identification system used in vehicular access applications.The configuration consists of:- a Base Station transceiver,- portable programmable Tags.- a loop detector (optional)Figure 1.1. ConfigurationBoth the Tags and the Base Station are microprocessor controlled. This allows for increased robustness of theRF link, and flexibility with respect to coding and system configuration.The Tag is positioned on the windscreen and is automatically triggered when the vehicle approaches within aset distance of the Base Station unit. Upon confirming that a Base Station unit is being communicated with, theTag transmits a unique code. This code is received by the Base Station and is passed on to the associatedaccess controllers.
708UM0210-01 October 1999 Autotag-P User Manual Page: 5 of 33Two possible modes of operation exist:1. A loop detector informs the Base Station of the presence of a vehicle. The Base Station then transmits a Pollsignal to the Tag, which responds with an ID code. The code is verified by the Base Station, which then initiatesfurther action (eg. opening of a barrier).2. The Base Station continually transmits a signal, thus waking up the Tag as soon as it comes within range.This renders the loop redundant and reduces the cost of the system.Both configurations have their advantages. The first has increased integrity and reduces the chance ofaccidental triggering. It also drastically reduces the average radiation of the Base Station. The second has lowerconfiguration and installation costs.Communication between the Base Station and the associated control system (eg. time-and-attendance monitor)is via a choice of industry-standard protocols.This document applies to the following models in the Autotag-P range:AUTOTAG-P BASE STATION MODELSFT Number Part Number Voltage Protocol708FT0231 ATR431P-C2 115V AC Clock & Data / Wiegand and RS-232708FT0232 ATR432P-C2 230V AC Clock & Data / Wiegand and RS-232708FT0233 ATR434P-C2 12-24V DC Clock & Data / Wiegand and RS-232708FT0241 ATR431P-C4 115V AC RS-485708FT0242 ATR432P-C4 230V AC RS-485708FT0243 ATR434P-C4 12-24V DC RS-485AUTOTAG-P TRANSPONDER MODELSFT Number Part Number Model708FT0210 AT430P Programmable Tag708FT0212 ATP430P Programmable Tag with Proximity TransponderRELATED DOCUMENTS:708LF0211 Autotag-P Base Station Installation Guide708LF0210 Autotag-P Tag Installation Guide708DS0210 Autotag-P Data Sheet708UM0201 Autotag-P Programming Station User Manual
708UM0210-01 October 1999 Autotag-P User Manual Page: 6 of 332.TECHNICAL DATA2.1. System ParametersConfiguration Encoding: One Byte Distributor / OEM code (Allows for 255unique distributor / OEM’s).Two Byte Installer code (Allows for 65536 installersfor each Distributor / OEM code).Refer to Autotag-P Programmable Station User Manual Document Number 708UM0201 for moreinformation,2.2. Autotag-P Base Station ATR430P series2.2.1. ElectricalPower Supply: 120V AC 708FT02X1 ATR 431P230V AC 708FT02X2 ATR 432P12 - 24V DC 708FT02X3 ATR 434P (Where X = 3 – RS-232 model = 4 – RS-485 model)Supply Tolerance: +10%Current Consumption: <200mA at 24VProtection: Metal Oxide Varistor’s, LC filtering & Transorb spike protector ofthe supply lines2.2.2. MechanicalDimensions: 220 mm x 220 mm x 67 mmMaterial: ABS PlasticMounting: See Mounting Instructions (Section 4.1.2)2.2.3. EnvironmentalStorage Temperature: -40°C to +85°COperating Temperature: Mains versions -40°C to +70°CDC versions -40°C to +85°CHumidity: 98% max.Environmental Sealing: IP56Other: UV resistant2.2.4. RF ChannelOperating Frequency: 433.92 Mhz nominalIntentional Radiator Compliance: Complies to the following:ETSI I-ETS 300 220 (European Community)
708UM0210-01 October 1999 Autotag-P User Manual Page: 7 of 33EMI/EMC Compliance: ETSI I-ETS 300 683RF Output Power: Adjustable to maximum of +10 dBm (10 mW)Transmitter Modulation Type: 100% AM (OOK), PWMTransmit Modulation Frequency: 167 Hz to 250 HzTransmitter Data Rate: 10 Bytes / secTransmitter Stability: SAW resonator referencedReceive Modulation Frequency: 375 Hz & 500 HzReceive Data Rate: 50 Bytes / secReceiver Stability: Crystal referencedPolarisation: Elliptical2.2.5. CommunicationsInterfacing protocols: WIEGAND, CLOCK & DATA and RS-232 or RS-485 only.Protection: Transorbs on all external communications lines. Opto-isolator onarming inputConnectors: Mains – 3 way plugable screw terminalDC power & relay – 5 way plugable screw terminalInterface and communications two by 6 way pluggable screwterminals2.2.6 Relay Outputs 5 Amp @ 230V AC single pole change over
708UM0210-01 October 1999 Autotag-P User Manual Page: 8 of 332.3. Autotag-P Tag Transponder AT430P2.3.1. ElectricalPower Supply: Replaceable 3V CR2032 lithium coin cellCurrent consumption: Quiescent: <5 uA Transmitting:<3 mABattery Life: 3 years +2.3.2. MechanicalDimensions: 120 x 32 x 11 mmMaterial: ABS PlasticMounting: See Mounting Instructions (Section 4.2.2)2.3.3. EnvironmentalStorage Temperature: - 40°C to +85°COperating Temperature: -30°C to +85°CHumidity: 98% max.Environmental Sealing: Sealed to IP42Other: UV resistant2.3.4. RF ChannelOperating Frequency: 433.92 MHz.Operating Range: 8m maximum, adjustable, depending on site conditionsReceiver Modulation Type: 100% AM (OOK), PWMReceiver Modulation Frequency: 167 Hz to 250 HzReceiver Data Rate: 10 Bytes / secTransmitter Power: 30 µWTransmit Modulation Frequency: 375 Hz & 500 HzTransmit Data Rate: 50 Bytes / secStability: SAW resonator referenced
708UM0210-01 October 1999 Autotag-P User Manual Page: 9 of 332.3.5. CodeSystem coding: 24 bits fixedUser coding: 32 bit programmableNo. of possible codes: Over 4 billion (232) unique codes2.4. Autotag-P Tag with Proximity TransponderSpecifications of Proximity Transponder:EM4002: CompatibleOperating Frequency: 125 kHzRange: 1 – 3 cmCoding: 32 bit fixed (not sequential)
708UM0210-01 October 1999 Autotag-P User Manual Page: 10 of 333. FCC REGULATIONSWhen this system is used in the United States of America, only the following models may be used:AUTOTAG-P BASE STATION MODELSFT Number Part Number Voltage Protocol708FT0233 ATR434P-C2 12-24V DC Clock & Data / Wiegand and RS-232708FT0234 ATR434P-C2 12-24V DC Clock & Data / Wiegand and RS-232(McGann)AUTOTAG-P TRANSPONDER MODELSFT Number Part Number Model708FT0210 AT430P Programmable Tag708FT0211 AT430P Programmable Tag (McGann)User in the United States of America.Please note the following important caution:-BASE STATION ID LABELTAG FCC INFORMATIONChanges or modifications to this product not expressly approved by NortechInternational (Pty) Ltd, in writing, could void the user’s authority to operatethe product.{PRIVATE }Nortech International(Pty) Ltd ATR434P-C2(708FT0233)FCC ID: XXXXX-XXXXFrequency: 433.92 MHzPower: 10 mW{PRIVATE }Nortech International(Pty) Ltd AT43P (708FT0210)FCC ID: XXXXX-XXXXFrequency: 433.92 MHzPower: 30 µW
708UM0210-01 October 1999 Autotag-P User Manual Page: 11 of 334.OPERATING PRINCIPLES4.1. Radio Frequency Communications: Important conceptsThe Autotag-P Base Station and Tags communicate by means of radio waves. Although these are very useful,as no physical link is needed, they also have some inherent properties which need to be understood for theinstallation to work well.TagBase StationFigure 4.1: Isometric view of Base Station with Tag4.1.1. Maximum RangeRange is defined as the greatest distance between the Base Station and the Tag, at which reliablecommunications can take place.The Autotag-P unit has a guaranteed range of 8 m, influenced to a degree, by background noise levels.Environmental conditions have a direct impact on the range:q During business hours, man made radio frequency interference (RFI) is at it’s strongest, hence reducing theeffective range.q At the Autotag-P operating frequency, wet weather tends to damp long range radio frequency propagationbut has little effect on short range communications, hence increasing range.The maximum range, therefore, will be achieved on a wet weekend night. This can typically be up to 15 m.
708UM0210-01 October 1999 Autotag-P User Manual Page: 12 of 334.1.2. Reflection and absorptionThe direction a radio wave travels (and how far it travels) can be affected by its environment. The wave tends tobe reflected by metal surfaces and absorbed by other materials, when passing through them. At most sitesthere will be a fair amount of metal in the vicinity, in the form of re-inforcing bars in walls, air conditioning ducts,etc. For example, if a large metal sheet is placed in front of the Base Station, any Tags on the other side of theplate would most likely be unable to communicate with the Base Station and the system would not function.Figure 4.2. Interaction of RF Waves with various materials4.1.3. Noding and nullsA site which is fairly enclosed or has large reflective surfaces in the vicinity, will cause the reflections to interactwith one another. At some points they will interact constructively and there will be a high energy concentrationand at other points the interaction will be negative, resulting in a lower energy concentration.These ‘lows’ are called nulls, and are points at which the Tags may not receive signals from the Base Station.Figure 4.3. Distribution of nulls in a confined areaFor the Autotag-P unit these nulls will generally be very localised, ie. covering an area of a few tens ofcentimetres. A moving vehicle will pass through several peaks and nulls when within range. Transmission willtherefore take place whenever a ‘peak’ has been encountered. During commissioning, as one moves about thevicinity of the Base Station, this phenomenon can be noticed.NOTE: The pattern of nulls may be significantly changed by repositioning the Base Station or even simplyangling the unit. For example, where a null covers a relatively large part of the operational zone, repositioning ofthe Base Station may be required.TransmittedReflected10% 40-60% >90%90% 60-40%<10%NodesPassage WallWood Reinforced Concrete MetalIncident
708UM0210-01 October 1999 Autotag-P User Manual Page: 13 of 334.1.4. Radiation patternThe Base Station unit is designed to ensure that the RF waves are transmitted radially outwards, primarily in thedirection of the front face of the unit. (In more scientific terms: there is a main lobe of radiation perpendicular tothe front face.) Tags will therefore operate at maximum range when directly facing the Base Station unit. Thelobe is fairly broad and will therefore work over a wider angle of coverage than simply directly in front of the unit.Figure 4.4. Radiation pattern of Base StationFigure 4.5. Influence of nearby metal object on pattern(This was done to give the unit a degree of directionality, so that one could ‘aim’ it in the required direction.)Due to the nature of RF, this lobe is not very defined and its shape may change, depending on the localenvironment. For example, if the unit is positioned close to a metal gate (see Figure 4.5) the lobe will tend tobend towards it. If one is situated in an enclosed area, the radio waves tend to reflect off the enclosing walls,and they set up nodes and nulls in the area. As stated earlier, this will not significantly compromise operation, asthe nulls will tend to cover small areas, each surrounded by an area of good signal strength. The most importantpoint here is that the lobe shape has now changed considerably and become more unpredictable. For example,one may now be able to detect a Tag 3 to 5 metres behind the unit.8 mBase StationMetal Gate
708UM0210-01 October 1999 Autotag-P User Manual Page: 14 of 33Summary of important points about RF:• RF is unable to penetrate most metals. (For example, talking to someone in a room with metal walls over ahand held radio is impossible. RF can however go around the walls.)• RF may be reflected by walls and other structures, especially those with metal reinforcing.• RF becomes weaker with distance.4.2. Autotag-P Communications ArchitectureCommunication between the Tag and Base Station takes place as follows:As stated in the Introduction (Section 1.) there are two ways of configuration. These depend on site conditionsand requirements in terms of functionality.1. An arming input is provided. This is a relay input and the triggering device could be a loop detector,mass detector or some similar device. This allows for triggering of the Base Station only when a vehicleis present. The Base Station is then only transmitting at such times. The advantages of using this are:-It reduces the chance of false triggering (eg. by a pedestrian walking past with a Tag).-The intermittent transmission reduces possible interference with other devices that may beoperating at the same frequency in the vicinity.-The time-averaged radiation from the device is greatly reduced. This may in some cases beimportant for compliance with local EMC regulations.2. Should the arming input not be used, the Base Station will continually transmit a signal. The advantagesof this are:-The Tag is triggered as soon as it comes within range, and sensitivity to nulls is reduced.-The loop or other triggering device is made redundant, reducing the system and installationcosts.The following applies to both configurations:The Base Station transmits a signal to any Tags within range. The Tag is activated by this signal. It then checksto see that it is actually a Base Station that has woken it up. It does this by decoding the code that wastransmitted. Once satisfied, it then transmits its own 32 bit code. The code is received and checked for integrityby the Base Station and then passed on to the control system via the communications connector.4.3. CodingThe coding in the Autotag-P system is split into the following sections:32 bit User Data (Tag only)16 bit Installer code8 bit Distributor / OEM code32 bit mask (Base Station only)4.3.1 32 Bit User Data (Tag only)The 32 bit User Data can be programmed into the Base Station and Tag using the Autotag-PProgramming Station. The 32 bits of User Data can be programmed in any combination of site codebits and card number bits to match the access controller’s requirements.This feature makes the Autotag-P system very flexible, enabling configuration to most accesscontrollers.For more information on Programming the 32 bit user data, refer to the Autotag-P Programming StationUser Manual Document Number 708UM0201.The Autotag-P Tags are shipped from the factory with the 32 bit User Data set to the Tag’s serialnumber.
708UM0210-01 October 1999 Autotag-P User Manual Page: 15 of 334.3.2 16 Bit Installer CodeAs the 32 bit User Code is programmable, there is a possibility that two Tags from different installationwill have the same code, hence allowing access to the other site.Therefore the introduction of the Installer code. This 16 bit code allows for 65535 Installer codes foreach Distributor code. The Distributor, programs this code into the Autotag-P Base Station and Tags forthe Installer, using the Autotag-P Programming Station. The 16 bit Installer code in the Base Stationand Tag must match before the Base Station sends the 32 bit User Data to the access controller. TheAutotag-P Base Station and Tags are shipped from the factory with the 16 bit Installer code set to“00000” (the default Installer code).4.3.3 8 Bit Distributor / OEM CodeThe 8 bit Distributor / OEM code allows for 255 Distributor / OEM codes. This code is programmed in tothe Autotag-P Base Station and Tags by the Distributor / OEM using the Autotag-P ProgrammingStation. The 8 bit Distributor / OEM code in the Base Station and Tag must match before the BaseStation sends the 32 bit User Data to the access controller. The Autotag-P Base Station and Tags areshipped from the factory with the 8 bit Distributor / OEM code set to “000” (the default Distributor / OEMcode).4.3.4 32 Bit Mask (Base Station Only)This is an advanced feature and it is recommended that this section is left at “0000000000”. If any bitof this 32 bit Mask is set, the corresponding bit of the Tag’s 32 bit User Data must also be set.4.4 R.F. Communications between Base Station and TagThe communications between Base Station and Tag are split into the following sections:Poll: From Base StationResponse: From the TagAcknowledge: From the Base Station4.4.1. Poll from the Base StationThe Base Station Polls for the Tag at regular intervals, listening for a response from a Tag betweeneach Poll. The “Poll” contains the following: Poll command, Base Station ID and a Check Digit.4.4.2 Response from the TagOn receiving a Poll from the Base Station, the Tag checks the Poll message against the Check Digit. Ifit is a valid Poll the Tag returns a response message using the Base Station ID from the Poll message.The “Response” contains the following: Response Command, Base Station ID, Distributor Code,Installer Code, 32 Bit User Data and a Check Digit.4.4.3 Acknowledge from the Base StationOn receiving a response from a Tag, the Base Station checks the response message against the CheckDigit. If it is a valid Response Message, the Base Station checks the “ Base Station ID” in the responsemessage against it’s own Base Station ID to see if the message has not been sent from a Tagassociated with another Base Station. If the Base Station ID’s match, the Base Station sends out anAcknowledge Message. The “Acknowledge” contains the following: Base Station ID, the 12 leastsignificant bits of the Tag’s 32 bit User Data and a Check Digit.On receiving the Acknowledge Message, the Tag checks the integrity of the message and that it is anacknowledgement to it’s response message. If all match, the Tag goes to sleep, for typically 7 seconds(min 3.5 sec, max 11.5 sec). This sleep period reduces the Tags power consumption and allows otherTags in range to communicate with the Base Station. If the Tag goes out of range of the Base Station, it
708UM0210-01 October 1999 Autotag-P User Manual Page: 16 of 33will power down. Coming back into range will reinitiate the entire communicationsequence.4.5. Communication Protocol OptionsThere are four communications options available:Wiegand – 34 or 26 BitClock&Data – 10 or 8 Digit BCDRS-232 – Autotag-P Point-to-point ProtocolRS-485 – Nortech Multi-drop ProtocolThere are two basic communication models either the 708FT023X models or the 708FT024X models (where ‘X’is the power supply option)The 708FT023X models have the “RS-232 Autotag-P Point-to-point Communication Protocol”. Where asthe 708FT024X models have “RS-485 – Nortech Multi-drop Communication Protocol”The 708FT023X models come standard with both Wiegand and Clock&Data communications protocols.The selection between either Wiegand or Clock&Data is via DIP Switch SW1-3Other communication protocols are available on special request.4.5.1 Wiegand Communication ProtocolRefer to section 5.3.1 for switch locations and settings.This is a unidirectional protocol (from the Autotag-P Base Station to the Access Controller).One of two versions of this protocol can be selected. Either 34 bit or 26 bit Wiegand. The default is 34 bitWiegand. To select 26 bit Wiegand switch OFF switch SW2-2. To revert back to 34 bit Wiegand switch ONswitch SW2-2.For 34 bit Wiegand Protocol (SW2-2 and SW2-3 ON), (being the preferred version of this protocol). The 32 bitunique code from the Autotag-P Tag is sent out with the addition of two parity bitsFor the 26 bit Wiegand protocol (SW2-2 OFF and SW2-3 ON). The 32 bit unique code from the Autotag-P Taghas the eight most significant bits striped off and the resultant 24 bits are sent out with the addition of two paritybits4.5.2 Clock&Data Communication ProtocolRefer to section 5.3.1 for switch locations and settings.This protocol is also known as “Magnetic Stripe Track 2.”This is a unidirectional protocol (from the Autotag-P Base Station to the Access Controller).One of two versions of this protocol can be selected. Either 10 digit or 8 digit Clock&Data. The default is 10 digitClock&Data. To select 8 digit Clock&Data, switch OFF switch SW2-2. To revert back to 10 digit Clock&Dataswitch ON switch SW2-2.For 10 Digit Clock & Data Protocol (SW2-2 ON and SW2-3 OFF), (being the preferred version of this protocol).The 32 bit unique code from the Tag is converted to 10 digit BCD. Each BCD digit gets its own parity bit. Theresultant digits together with a message header and footer are used to calculate the message check digit.For 8 Digit Clock & Data protocol (SW2-2 OFF and SW2-3 OFF). The 32 bit unique code from the Tag isconverted to 10 digit BCD. The two most significant BCD digits are discarded. Each of the remaining eight BCD
708UM0210-01 October 1999 Autotag-P User Manual Page: 17 of 33digits gets its own parity bit. The resultant digits together with a message header and footer areused to calculate the message check digit.4.5.3 RS-232 – Autotag-P Point-to-point Communication ProtocolRefer to section 5.3.1 for switch locations and settings.This is a unidirectional protocol where the unique code read from the Autotag-P Tag is sent out on the RS-232transmit line.Data Format: 8 data bitsNo parityOne stop bitSwitch selectable: 1200 and 9600 baudThe 32 bit unique code from the Autotag-P Tag is converted to 10 digit BCD. These ten BCD digits are thenconverted to ten ASCII digits. The ten ASCII digits are sent out with a Carriage Return Line Feed (CRLF)terminator.The total length of the communications wires is limited to 10 meters (30 feet)4.5.4 RS-485 – Nortech Multi-drop Communication ProtocolThis is a bi-directional multi-drop protocol where up to 32 Autotag-P Base Stations and one Access Controllercan be connected to the same two communication wires.The Access Controller polls each Base Station in turn to check if the Base Station has any information. Whenit’s the Autotag-P Base Station’s turn the unique code read from Autotag-P Tag is sent to the Access Controller.Data Format: 8 data bitsNo parityOne stop bitSwitch selectable: 1200 and 9600 baudThe 32 bit unique code from the Autotag-P Tag is converted to 10 digit BCD. These ten BCD digits are thenconverted to ten ASCII digits. The ten ASCII digits together with a Carriage Return Line Feed (CRLF) terminatorare only sent out when requested to do so by the Access controller.The total length of the communications wires is limited to 1200 meters (4000 feet).
708UM0210-01 October 1999 Autotag-P User Manual Page: 18 of 335.INSTALLATION5.1. Base Station5.1.1 General descriptionThe Base Station is a robust, weatherproof device capable of being mounted outdoors and of handling widetemperature / humidity ranges (-40°C to +70°C, 0 - 98% rel. humidity). The casing is constructed of an ABSplastic, which is impact- and UV-resistant. An O-ring seal is incorporated to ensure minimal ingress of water anddust. Cable access is via two knockouts, one in the centre of the base for mounting on a goose neck, and oneslightly off-set and lower down, for wall mounting. Access to the electronics is via screws hidden behind clip-inpanels on the front cover.Figure 5.1. Base Station: Exploded ViewThe Base Station has been designed so that all electronics are recessed into the cover.This feature allows for issuing the housing Base for mounting, eliminating the risk of damage during installation.Use of pluggable screw terminals allows for the cabling to be completed before plugging in the electronics,further reducing the risk of damage to the electronics.5.1.2. Autotag-P Base Station Packing List1 x Housing Base1 x Cover (with electronics fitted)1 x Installation Instruction Leaflet1 x Accessory Pack, containing:2 x Screw Cover Clips4 x Allen Cap Screws (M4 x 35)1 x Allen Key2 x 6 Way Pluggable Screw Terminals1 x 5 Way Pluggable Screw Terminals1 x 3 Way Pluggable Screw Terminals (mains version only)BaseCoverScrew Cover Clips
708UM0210-01 October 1999 Autotag-P User Manual Page: 19 of 335.1.3.InstallationThe unit may be wall, pole or gantry mounted. The height of the mount should be equivalent to the averagevehicle window height. The unit must be positioned so that it ‘looks into’ the vehicle.Figure 5.2. PositioningWall mounting:Wall mounting is possible when the wall is within the specified range of the vehicles to be monitored.The presence of metal re-enforcing in the wall has negligible effect on the operation of the BaseStation.1. Determine the area in which the unit must detect. The Base Station unit should be placed roughlyin the middle of this area (Figure 5.2)2. Unclip the two screw covers and remove front cover via screws.3. Knockouts are provided on the base (Figure 4.1). Remove the appropriate knockouts, includingthat of the cable access hole.4. Route power and communications cables through the cable access hole.5. Bolt base to wall via knockouts.6. Connect cables according to wiring diagram in Section 5.1.7. Before applying power: Set the DIP switches according to the type of installation required. If the‘triggered’ setting is to be used, ensure the arming input is connected and that the trigger system(eg. loop detector) is functioning.8. Apply power. The RED LED should be illuminated.9. Holding a Tag in front of the unit should cause the GREEN LED to light up for a second at a time.This indicates that the Base Station is receiving the code from the Tag. NB: The Circuit Board does NOT need to be unscrewed from the front cover at any point.Doing so will result in the warranty being voided. 8m max.Gantry mountPole and wallmountLoopBoom
708UM0210-01 October 1999 Autotag-P User Manual Page: 20 of 33Pole or gantry mounting:1. When mounting on a pole, refer to the dimensions and recommended minimum size on the gooseneck mounting plate drawing in Appendix B.2. A hole in the centre of the flange with a diameter of 30 mm will allow for hidden cable access.3. Ensure that the unit faces the window area of the vehicles to be monitored.4. Mounting instructions are the same as for the above.5.1.4.WiringRefer to Section 6.1 for connector Pin assignment and to Appendix A for additional information.Refer to section 5.3.1 for switch locations and settings.5.1.4.1 Connecting the Base Station to a controller:Wiegand: Connect the following lines: CN7 Pin 4 (DATA0), CN7 Pin 3 (DATA1) and CN5Pin 1 (GND) to the corresponding terminals on the controller. Ensure thatswitch SW2-3 is ON.Clock & Data: Connect the following lines: CN7 Pin 4 (Clock), CN7 Pin 3 (Data), CN7 Pin 2(Card Present) and CN5 Pin 1 (GND) to the corres-ponding terminals of thecontroller. Ensure that SW2-3 is OFF.RS-232:This feature is only available on the RS-232 model. Connect CN7 Pin 5 (RS-232 TX) to the receive pin of the controller. Connect CN7 Pin 6 (RS-232 RX) tothe transmit pin of the controller. Connect CN5 Pin 1 (GND) to the signal GNDPin of the controller.RS-485:This feature is only available on the RS-485 model. Connect the followinglines: CN7 Pin 6 (RS-485 A), CN7 Pin 5 (RS-485 B) and CN5 Pin 1 (GND) tothe corresponding terminals of the controller. Ensure that each Base Stationhas a unique address by setting switches SW1-1 through SW1-5.5.1.4.2 Connecting the Base Station to a triggering device:This is done when the Base Station is to operate in ‘Triggered’ mode. A vehicle detector positioneddirectly in front of the Base Station unit is used to trigger operation.The vehicle detector can be a loop detector, capacitive detector or any other unit capable of providinga CONTINUOUS relay closure whilst a vehicle is present. In the case of a loop detector this requiresthat the unit is configured for PERMANENT PRESENCE.Connect CN7 Pin1 to the N/O relay output of the triggering device, and CN5 Pin 1 of the screwterminal block to the RELAY COMMON connection of the triggering device.5.1.4.3 Operating multiple Base Stations in proximity to oneanother:When two or more Base Station units are operated in proximity to one another they may cause mutualinterference if not synchronised. Synchronisation ensures that their transmissions do not interfere withone another. To synchronise the units, connect the SYNC lines CN5 Pin 6 and GND CN5 Pin 1 on the6-pin power connectors to the corresponding pins on all units (ie. Pin 6 to Pin 6, Pin 1 to Pin 1).(Refer to section 6.1)In addition to the SYNC function, the Base Station also has Base Station ID switch settings. Whenseveral units are operating on the same site, setting different ID’s for each unit ensures that they onlyreceive codes from the Tags that they themselves have actuated. That is, Base Station ‘A’ will notreceive the code from a Tag actuated by Base Station ‘B’. See Section 4.3.1 for more information.
708UM0210-01 October 1999 Autotag-P User Manual Page: 21 of 335.2 Tag5.2.1. General descriptionThe Tag is an active transponder designed to communicate with an Autotag-P Base Station unit. TheTag is triggered by the Base Station when within range and transmits a unique code back. It is availablein an impact- and UV-resistant nylon-based housing. It operates over a temperature range of -30°C to+85°C and has a minimum working life of 3 years. (Replacement battery CR2032 3V lithium coin cellNortech P/No MIE040001). It is recommended that an optional Tag holder (708MD0012), which allowsfor the removal of the Tag from the vehicle, be used to hold the Tag in position on the windshield(windscreen).NB: Immersion of the Tag in liquid or interfering with the interior electronics will result in thewarranty being voided.5.2.2. PositioningFor reliable operation the Tag should be positioned on the side of the vehicle closest to the BaseStation. If, on entry or exit, the Base Station is on opposite sides of the vehicle position the Tag at thecentre of the windshield behind the rear-view mirror (see Figure 1). Ensure that the driver’s field of viewis not obstructed.The Tag is NOT to be placed on the exterior of the vehicle.Figure 5.3. Tag placement on windshield (viewed from inside).Factors influencing selection of the Tag mounting position:The main factor affecting performance is the proximity of metal or other conducting material (such asthe human body). For example, many dashboards are made of metal and covered with a thin syntheticfoam/rubber layer. If the Tag were placed on this it would not operate. Likewise, if placed in a person’sshirt pocket operation could also not be guaranteed.Also, if it were placed further within the car (instead of on the windscreen) the metal shell (of the car) willact as a shield, possibly preventing communication with the Base Station.5.2.3 Mountingq Use double sided mirror tape to mount the Tag or the optional holder.q Ensure that the windscreen is thoroughly clean and dry, being free of any oil or grease.q Remove the backing from the adhesive tape on the Tag or the optional holder and press firmly inplace.q If the optional Tag holder is used, insert the Tag into the holder.Recommendedgreater than50mm (2 inches)from the edge.Recommended mounting zones
708UM0210-01 October 1999 Autotag-P User Manual Page: 22 of 335.3. Base Station Configuration OptionsFigure 5.4. Layout of Main board
708UM0210-01 October 1999 Autotag-P User Manual Page: 23 of 33Refer to the Main Board Layout (Figure 5.4) for the following:5.3.1 Base Station DIPSwitch settings: SW2 SW1Figure 5.5: Picture of DIP Switches as seen on Base StationWith reference to Figure 5.5 the following options are presently available:Switch 2:BuzzerSW2-1 ON EnableComms LengthON 34 Bit/10 DigitSW2-2 OFF 26 Bit / 8 DigitProtocolON WiegandSW2-3 OFF Clock & DataRS-232 / RS-485ON RS-232SW2-4 OFF RS-485Baud RateON 9600SW2-5 OFF 1200Multiple ReadON EnableSW2-6 OFF DisableMode of OperationON TriggeredSW2-7 OFF ContinuousLED ControlON Controlled by access controllerSW2-8OFF Controlled by Base Station1234567812345678ONON
708UM0210-01 October 1999 Autotag-P User Manual Page: 24 of 33Switch 1:If an address switch is ON this represents a binary ZERO if the switch is OFF thisrepresents a binary ONE.Address/ID SW1-5 SW1-4 SW1-3 SW1-2 SW1-10ON ON ON ON ON1ON ON ON ON OFF2ON ON ON OFF ON3ON ON ON OFF OFF4ON ON OFF ON ON5ON ON OFF ON OFF6ON ON OFF OFF ON7ON ON OFF OFF OFF8ON OFF ON ON ON9ON OFF ON ON OFF10 ON OFF ON OFF ON11 ON OFF ON OFF OFF12 ON OFF OFF ON ON13 ON OFF OFF ON OFF14 ON OFF OFF OFF ON15 ON OFF OFF OFF OFF16 OFF ON ON ON ON17 OFF ON ON ON OFF18 OFF ON ON OFF ON19 OFF ON ON OFF OFF20 OFF ON OFF ON ON21 OFF ON OFF ON OFF22 OFF ON OFF OFF ON23 OFF ON OFF OFF OFF24 OFF OFF ON ON ON25 OFF OFF ON ON OFF26 OFF OFF ON OFF ON27 OFF OFF ON OFF OFF28 OFF OFF OFF ON ON29 OFF OFF OFF ON OFF30 OFF OFF OFF OFF ON31 OFF OFF OFF OFF OFFBaud Rate:This switch (SW2-5) is used to select the baud rate for RS-232 and RS-485 communications (on unitssupporting these options).Data Output Protocol:This switch (SW2-3) is used to select, either Wiegand or Clock & Data Protocol (standard on all units).RS-485 Multidrop addressing / Base Station ID code:DIP switches SW1-1 through SW1-5 serve two functions. For units supporting 485 communications,they allow for individual addressing of each unit. In addition, they allow each unit to ‘fingerprint’ the Tagit communicates with. This ensures that Base Station ‘A’ doesn’t receive the code from a Tag triggeredby Base Station ‘B’ (as long as the two have different ID code settings).Allowance has been made for up to 32 different RS-485 addresses and 16 Base Station ID’s.Transmission mode:If the Base Station is to operate without any trigger input (such as an arming loop), set the switch to‘Continuous’. The unit will then continuously transmit its wake-up signal.
708UM0210-01 October 1999 Autotag-P User Manual Page: 25 of 33If it is to operate with a triggering device, set it to ‘triggered’ and ensure the device isconnected (see section 4.1.3).5.3.2 Range adjustment:The range can be adjusted to compensate for local / site conditions and applications.This is done via the single turn adjustment trimmers on the main board (see figure 5.4).Note that both the COARSE and FINE trimmers are set to maximum range at the factory.I.e: turned clockwise to the limit.NB: Do not try to force them beyond their normal range.5.3.3 Internal Diagnostic LED:q Power Up: Red LED goes on to show that power is on, then the Green LEDflashes twice and buzzer beeps twice.q Normal operation: After power up red LED is on. If the B/S receives a valid ID the greenLED flashes once, the buzzer beeps and on the RS-232 model therelay will pulse. On the RS-485 model the relay is controlled by theRS-485 communications.q Fault condition: If a fault condition occurs, the red LED will flash.q Wrong Distributor Code: The Red LED flashes OFF twice.q Wrong Installer Code: The Red LED flashes OFF twice.q Memory Check Sum Error: The Red LED flashes OFF three times.5.3.4 External Indicator DriversTwo external indicators can be connected to the Base Station. Refer to Appendix A: Wiring Diagrams, on howto connect these indicators.Each driver has the following maximum ratings: 30V DC 100mA. If the indicators exceed these ratings, externalrelays must be used.Dip Switch SW2-8 selects which device controls the external indicators. If SW2-8 is OFF the Base Stationcontrols the indicators. If SW2-8 is ON the access controller controls the indicators via the two terminals CN5Pins 4 & 55.4. CommissioningOnce the unit has been installed and is working, the following steps need to be taken.In the case of a single unit on the site:1. Apply power to the Base Station.2. Set the configuration to “Continuous Transmission” (see Section 5.3.1). Adjust the two rangetrimmers to maximum range (see Figure 5.4).3. Attach a Tag to a vehicle that will require access to the site. Follow the steps in Section 5.2, ensuringthat the Tag is mounted in the vehicle, on the side of the windscreen that is closest to the BaseStation unit.4. Drive up to the unit. Stop the vehicle at the point where it is required that the Tag be detected.5. Adjust the range adjustment trimmers on the internal PCB of the Base Station until the correct rangeis obtained. If the Base Station is detecting the Tag reliably the GREEN LED should light up onceevery 5 – 10 seconds. If it isn’t then increase the range.
708UM0210-01 October 1999 Autotag-P User Manual Page: 26 of 33This delay is caused by the Tag going to sleep making range setting and verification atedious operation. To speed up this task a Test Tag (708FT0214) is available. This Test Tag doesnot go to sleep, but responds to all valid Polls it receives.6. Once the range has been set it is a good idea to increase it a little beyond this point to ensure that itwill operate reliably under all conditions.7. Should the unit be connected to a controller, ensure that the controller receives the code, and thatthe two units are configured to use the same communications protocol (ie. Wiegand, Clock & Data,etc.).8. Finally, if required, set the transmission mode of the Base Station to “Triggered” (see Section 4.3.1).NB: If testing the site by holding a Tag in your hand, ensure that you hold it inthe middle of the Tag, between thumb and forefinger. Do not cover itsends and hold it away from your body. In the case of multiple units being installed on a site: 1. Work as per the above instructions, testing each unit individually with the other units disconnected.2. Ensure that the SYNC line of each unit is connected to a common line (see Section 5.1.3). Note:This is generally only important for units which are within 30m of one another.3. Ensure that the ID settings for each unit are unique (see Section 5.3.1).4. Where two units are within 10 m of one another, try to mount them facing away from one another.This will minimise the chance of a unit reading the wrong Tag. Optimise the range setting of each togive a reliable read without interfering with the other unit.5. Power all units up, having set the individual operation modes of each (ie: ‘triggered’ or ‘continuous’).6. In the case of Base Station units situated very close to one another, drive a tagged vehicle up toeach unit and check whether or not it triggers the wrong Base Station. If it does, this may requirepointing the units away from one another and / or reducing the range of the unit that readsincorrectly.
708UM0210-01 October 1999 Autotag-P User Manual Page: 27 of 336.CONFIGURATION6.1. Wiring DetailCN7 6 Way Pluggable Screw TerminalPIN Wiegand Function Clock & Data Function1Triggered Input Triggered Input (Arming)2Not Used Card Present3DATA 1 Data4DATA 0 Clock5As per table below As per table below6As per table below As per table belowCN7 6 Way Pluggable Screw TerminalPIN RS-232 Function RS-485 Function1As per table above As per table above2As per table above Not Used3As per table above RS-485 TX Active4As per table above Not Used5RS-232 TX RS-485 B6RS-232 TX RS-485 ACN5 6 Way Pluggable Screw TerminalPIN FUNCTION1Signal Ground2External Indicator Output – Green3External Indicator Output – Red4External Indicator Input – Green5External Indicator Input – Red6SYNCCN2 5 Way Pluggable Screw TerminalPIN FUNCTION1Relay Normally Open2Relay Normally Closed3Relay Common4DC Power In Negative5DC Power In PositiveCN1 3 Way Pluggable Screw TerminalPIN FUNCTION1Mains Power Live2Mains Power Safety Earth3Mains Power Neutral
708UM0210-01 October 1999 Autotag-P User Manual Page: 28 of 337.CUSTOMER FAULT ANALYSIS Possible problems experienced during commissioning, and their solutions: FAULT CAUSED BY REMEDY The site regularly has severalvehicles queuing to enter and exitthe building. The Base Station unitdetects vehicles other than the firstin line, or detects several vehiclesat the same time. Base Station range set too high orthere is an orientation problem withthe Base Station.Reduce the range so that only thenearest vehicle is detected.If the problem persists then it ismost likely an orientation problem.In situations where it is importantthat individual vehicles aredetected in the correct order (suchas pay-parking), do not mount theBase Station pointing back alongthe line of vehicles (such as on anoverhead gantry). Rather mount itso that it faces the foremost carbut is pointed away from theothers. For example, mount it tothe side of the lane, pointingperpendicular to the road (see thewall mount in Figure 5.2). Also,mount it as close as possible to thevehicle, and mount all Tags on theside of the windscreen closest tothe Base Station. The closer theTags are to the Base Station, thelower the range setting can be,and the lower the chance ofaccidentally waking the wrong Tag. NOTE: Please read Section 4,especially 4.1.3 and 4.1.4 for moreinformation on possible problemsand their solutions. The Base Station doesn’t read theTag, or does so erratically. The Base Station range is set toolow or multiple Base Stations arenot synchronised.a) The Base Station may need tohave the range increasedslightly. Do so using theadjustment trimmers. It mayalso be that it needs to be re-oriented to face the Tagsdirectly. Ensure that the unit isfacing towards the correct areaof detection. This is especiallyimportant if a triggering deviceis to be used. For example, inthe case of a loop detector theunit must face an area directlyabove the loop.
708UM0210-01 October 1999 Autotag-P User Manual Page: 29 of 33b) For installations involvingmultiple Base Stations per site,ensure that the SYNC andGND lines (Pins 6 & 1 on CN5screw terminal) are commoned,and that each Base Station hasa different ID setting (seeSection 5.3.1). FAULT CAUSED BY REMEDY Several Base Stations read asingle Tag’s code simultaneously. Multiple Base Stations with thesame ID. Ensure the ID settings are uniquefor each Base Station. The Base Station reads peoplewalking past holding their Tags. Base Station is not being activatedby a triggering device. Ensure the Base Station isconnected to a triggering device(such as a loop detector) and thatSW2-7 is set to ‘ON’ (triggeredoperation). Also, try to situate theBase Station as far as possiblefrom any pedestrian access area. Red Diagnostics and Red externalindicator flashes. Either the Base Station or the Taghaving an incorrect:1. Distributor code.2. Installer code. Ensure that the Distributor andInstaller codes in both the BaseStation and the Tag match.
708UM0210-01 October 1999 Autotag-P User Manual Page: 30 of 33APPENDIX A – WIRING DIAGRAMMSRS232CONTROLLERRX Data InTX Data OutGNDShield (Screen)Earth GroundAUTOTAG-P BASE STATION “RS232” CONNECTION DIAGRAMPowerSupply5CN76 WayCN25 Way665AUTOTAG-PBASE STATIONClock & DataCONTROLLERCard Present InClock InData InGNDShield (Screen)Earth GroundAUTOTAG-P BASE STATION “Clock & Data” CONNECTION DIAGRAMPowerSupplyAUTOTAG-PBASE STATION2CN76 WayCN25 Way4365WIEGANDCONTROLLERData “0” InData “1” InGNDShield (Screen)Earth GroundAUTOTAG-P BASE STATION “WIEGAND” CONNECTION DIAGRAMPowerSupplyAUTOTAG-PBASE STATION4CN76 WayCN25 Way365
708UM0210-01 October 1999 Autotag-P User Manual Page: 31 of 33666CN5 ConnectorCN5 ConnectorSYNCGNDAUTOTAG-P MULTIPLE BASE STATION SYNC LINE CONNECTIONMAX SIXTEEN BASE STATIONS(NB: Each base station have a different ID)MUSTCN5 Connector11 1AUTOTAG-P BASE STATION TYPICAL TRIGGER CONNECTION DIAGRAM(The trigger (arming) input is to selectively enable the base stations polling)11 PIN RelayBasePD130INDUCTIVE LOOPVEHICLE DETECTORRefer to the PD130User Manual301UM0010Inductive loop in road surfaceRefer to Nortech’s Inductive LoopVehicle Detector User ManualMKT01N/OCN5 Pin 1CN7 Pin 1TriggerGNDCOMRS485CONTROLLERData “A”Data “B”GNDEarth GroundPowerSupply120TERMINATIONRESISTOR120TERMINATIONRESISTOR-VE+VEABABMaximum Stub Length = 1 meterNote 1: Refer to RS485 Addressing in section 4.3.1See Note *1See Note *1AAABBBCOMMUNICATIONS CABLE MUST BE A TWISTED PAIRMAXIMUM DISTANCE 1200 METERS (4000 FEET)AUTOTAG-P BASE STATION “RS485” MULTIDROP CONNECTION DIAGRAMTHE INSTALLER MUST ENSURE THAT THE 120 TERMINATION RESISTORS ARE INSTALLED AT THE ENDS OF THE CABLEMaximum number of readers = 325 Way5 Way5 Way4 4 45 5 56 6 6CN7 CN7 CN7555
708UM0210-01 October 1999 Autotag-P User Manual Page: 32 of 33CONNECTING EXTERNAL INDICATORSDRIVING THE EXTERNAL INDOCATORS FROM AN ACCESS CONTROLLER+PowerSupply-BASE STATIONCN5-2 Green OUTCN5-3 Red OUTCN5-1 GNDVmax = 30VRED GREENImax = 100mAImax = 100mABASE STATIONCN5-5 Red INCN5-4 Green INCN5-1 GNDACCESSCONTROLLERRed OUTGreen OUTGND
708UM0210-01 October 1999 Autotag-P User Manual Page: 33 of 33APPENDIX B – GOOSENECK MOUNTING PLATE25 mm holefor cablesAll dimensions in millimeters55 min 55 min35.7 35.755min55min35.735.74 holes taped M4989225 - 50 mmID pipeRSmallest bend for pipediameter selectedGreater than 70 mmWeld Fillet4 mm“O” ring sealmating area

Navigation menu