1771-GPS User Manual
Contents
1. 1771HP GPS User Manual Rev 5 0 BTR 7 READ DATE TIME amp STATUS This instruction is used to read the current Date Time and status of the 1771HP GPS Module BTR Length 7 READ DATE TIME amp STATUS Word 46 44 al ml uolslelrisislalalsl 0 CurYear CurMonth CurDay 1 CurHour CurMinute 2 CurSecond 3 BufferLength 4 InputFilter 5 TimeZone 6 Reserved CurMonth The current Month at time of Block Transfer 1 12 CurDay The current Day at time of Block Transfer 1 31 CurHour The current Hour at time of Block Transfer 0 23 CurMinute The current Minute at time of Block Transfer 0 59 CurSecond The current Second at time of Block Transfer 0 59 BufferLength The number of events resident in the module buffer InputFilter The current Digital Input Filter time in milliseconds TimeZone The current Time zone configuration 12 to 12 Page 17 of 32 1771HP GPS User Manual Rev 5 0 BTR 9 GPS POSITION amp VELOCITY This instruction is used to read the current GPS position and velocity Both position and velocity results are referenced to the WGS84 Earth Centred Earth Fixed co ordinate system which is defined as follows e The X axis is defined as the vector with origin at the earth s centre and passing through the intersection of the equator and the Greenwhich meridian e The Y axis is defined2. User Manual Rev 5 0 Trk1 Tracking only 1 Satellite Trk2 Tracking only 2 Satellites Trk3 Tracking only 3 Satellites SBad Current Satellite is Bad The satellite signal currently being acquired is suspect or unusable Page 22 of 32 Ks 1771HP GPS User Manual Rev 5 0 arpenoxa PLC LADDER EXAMPLE A 1 LADDER EXAMPLE 1 The module is configured on power up As an event is logged by the module it is read The event Date Time data is extracted Page 23 of 32 1771HP GPS User Manual Rev 5 0 0000 0001 0002 0003 N70 GPS EXAMPLE 1 RSF Total Rungs in File BTW Block Transfer Writs Module Type Generic Block Transfer Rack 000 Group 4 Module 0 Control Block N7 20 Data File N9 20 Length 3 Contizmous No Sarap Scresz BIR Block Transfer Read Module Type Generic Block Transfer Rack 000 Group 4 Module 0 Control Block N70 Data File N90 Lonzi 5 Contizmouz No Serap Scrosz BID Bit Field Distributor Source Source Bit Dest Dest Bi Length BID N9 0 156i lt 8 6100 6 lt 0 4 Bit Field Distributor Source Source Bit Dest Dest Br Leugh N9 0 15 Page 24 of 32 1771HP GPS User Manual Rev 5 0 GPS_EXAMPLE_1 RSE LAD 2 Total Rungs in File S BID 0004 Bit Field Distributor Source 49 1 Source Bit Dost Dost Bi Length BID 0005 Bit Field Disributor Source 1 Source Bit Dest Dest Bi Length
3. 1771HP GPS user manual e HTSB bus cable Hard Mount Antenna TNC Female gt S T TNC Male pe Z lt lt I 5 H RG 58 50 Ohm Max Distance 20m MASTER Figure 2 1 1771HP GPS module with antenna and patch lead Page 4 of 32 1771HP GPS User Manual Rev 5 0 CHAPTER 3 MODULE OPERATION 18 D aaa ORTON DDD D D ANWARUANWOSAH DDDDD DD DDD DD Figure 3 1 1771HP GPS Layout Alpha numeric LED Display Active LED Digital Input Status LED s HTSB Input RJ9 HTSB Output RJ9 GPS Antenna Port SMA Common for Bank 2 Inputs 10 17 Common for Bank 1 Inputs 00 07 m Bank 2 Inputs 10 17 Bank 1 Inputs 00 07 Page 5 of 32 1771HP GPS User Manual Rev 5 0 The 1771HP GPS module makes use of the Global Position System GPS to provide accurate time stamping of PLC and external events Events are triggered by a change in either One or more ofthe external 16 digital inputs External Or one or more bits in the module s PLC output image Internal External Inputs The 16 external inputs are arranged in 2 banks of 8 channels each These banks are electrically independent from each other having their own commons The inputs are optically isolated and available in either 24Vd c or 110Vd c Digital Filtering In order to prevent unnecessary events from being triggered due to contact bounce etc Each external input is digitally fil
4. BID 0006 Bit Field Distributor Source 2 Source Bit Dest Dest Bi Length BID 0007 Bit Field Distributor Source N9 2 Source Bit Dest Dest Br Length 0008 Page 25 of 32 1771HP GPS User Manual Rev 5 0 A 2 LADDER EXAMPLE 2 e The module is configured on power up e Real Time data is read from the module e The PLC s Date Time registers are synchronized to the module Page 26 of 32 1771HP GPS User Manual Rev 5 0 0000 0001 GPS_EXAMPLE_2 RSP LAD 2 Total Rungs in File 4 BIW Block Transfer Write Module Type Generic Block Transfer Rack 000 Group 4 Module 0 Control Block N7 20 Data File N9 20 Length 3 Continuous No Setup Screen BIR Block Transfer Read Module Type Generic Block Transfer Control Block Data File N9 30 Length 7 Continuous No Setup Screen Page 27 of 32 1771HP GPS User Manual Rev 5 0 GPS_EXAMPLE 2 R3P LAD 2 Total Rungs in File 4 SYNC ENABLE o BTRT DONE B30 N7 30 53 0 0002 ee COONS 10 13 1 BTD Bit Field Distributor Source N9 31 5651 lt Source Bit 0 Dest Dest Bu Length BID Bit Field Distributor Source N9 30 1241 Source Bit 0 Dest 20 25 lt Dest Ba 0 Length 5 BTD Bit Field Dismibutor Source N9 30 1241 Source Bit 5 Dest 19 Dest Bi 0 Length 4 eS Page 28 of 32 i 1771HP GPS User Manual Rev 5 0 0003 GPS EXAMPLE 2 RSP LAD 2 Tot
5. Filtering 107 Digital Input 07 Post Digital Filtering 106 Digital Input 06 Post Digital Filtering 105 Digital Input 05 Post Digital Filtering 104 Digital Input 04 Post Digital Filtering 103 Digital Input 03 Post Digital Filtering 102 Digital Input 02 Post Digital Filtering 101 Digital Input 01 Post Digital Filtering 100 Digital Input 00 Post Digital Filtering Second Real time Seconds 0 59 Millisecond Real time milliseconds 0 999 Page 13 of 32 1771HP GPS User Manual Rev 5 0 5 2 OUTPUT IMAGE OUTPUT IMAGE Word izae aS aE R az ayl a7 6 5 4 3 2 1 0 eee lle ie e alle ac a e 2 e e O DC a a a a a a a a a a a a a a RS N w N ie x N x Cw 1515151555155958 S155559 OLC Buffer Overflow Latch Clear Command 0 No effect 1 Clear Buffer Overflow Latch The latch will continuously be cleared if the OLC bit remains set It is thus recommended that this bit be set and immediatlel cleared Once the buffer as Overflowed this bit will remain set until an Overflow Latch Clear command has been issued Rsv Reserved for Future Use BT Rsv Reserved for Block Transfer M17 Memory Event Output 17 M16 Memory Event Output 16 M15 Memory Event Output 15 M14 Memory Event O
6. as the vector with origin at the earth s centre and passing through the equator 90 degrees east of the Greenwhich meridian e The Z axis is defined as the vector with origin at the earth s centre and passing through the North pole BTR Length 9 GPS POSITION amp VELOCITY word 15 14 13 12 11 10 laleli lels lala ECEF X Position meters x 1 ECEF X Position meters 10 000 ECEF Y Position meters x 1 ECEF Y Position meters 10 000 ECEF Z Position meters x 1 ECEF Z Position meters 10 000 ECEF X Velocity m s x 10 ECEF Y Velocity m s x 10 ECEF Z Velocity m s x 10 N o o ISIolo Plo w La 4 Page 18 of 32 1771HP GPS User Manual Rev 5 0 BTW 3 MODULE SETUP This instruction is used to configure the 1771HP GPS Module Normally this instruction should be executed only on PLC power up i e Triggered by the PLC s First Scan bit BTW Length 3 MODULE SETUP Word 15 14 13 12 11 10 9 er RE Bela gt gt gt gt gt gt gt gt gt gt gt gt gt gt Fr L 0 N N N N N N N N N N N N N N m ae DC x x x x x az a DC x x X 0 W O 1 InputFilter 2 TimeZone CBF Clear Buffer 0 No effect 1 Clear ALL events from the Buffer The buffer will be cleared each time the BTW is tri
7. logging OvFl Event Buffer Overflow An event was generated but could not be logged as the Event Buffer was already full Cir Event Buffer Overflow Latch Cleared The Event Buffer Overflow Latch has been cleared by the PLC This is achieved by momentarily setting the OLC bit Purg Event Buffer Purged All events in the Event Buffer have been deleted This is achieved by setting the CBF bit followed by a BTW3 EPro Event Processor Started The Event Processor has started and is ready to process memory events This typically occurs 3 seconds after power or changing to Run mode Note that External Input Events are immediately available on Power up of the module and remain active when the PLC CPU enters program mode 4 Page 20 of 32 1771HP GPS User Manual Rev 5 0 Prog PLC entering PROGRAM mode The PLC CPU is entering program mode or is powering down Run PLC entering RUN mode The PLC CPU is entering run mode or is powering up RmEr Internal Memory Failure RAM check has failed Check PLC power supply Contact supplier BTR5 Successful BTR5 request The module has successfully processed a Block Transfer Read Length 5 Request from the PLC CPU The data returned will contain the next event from the Event Buffer BTR7 Successful BTR7 request The module has successfully processed a Block Transfer Read Length 7 Request from the PLC CPU The data returned will contai
8. patch lead be required it is recommended that a GPS signal booster is used Contact your local Hiprom distributor for assistance Once the module has been power up for the first time it will search for satellites from a cold start i e no almanac The module will take approximately 5 minutes to acquire Lock Once a complete almanac has been downloaded the time to achieve fix will be reduced to around 45 seconds MASTER SLAVE CONFIGURATION Slave modules are connected to adjacent Master or other Slave modules by means of an HTSB bus cable All 1771HP GPS modules both Master and Slave are equipped with an HTSB input and output port Take care in ensuring that the HTSB Output port lower of the Master module is connected to the HTSB Input port upper of the next Slave module Incorrect connection of the HTSB bus cable could result in permanent damage to the module Page 9 of 32 Ax 1771HP GPS User Manual Rev 5 0 en Antenna III II III L RG 58 50 ohm MASTER SLAVE Figure 4 1 1746HP GPS Master Slave setup HTSB CABLE III III I HIT aR SLAVE Page 10 of 32 1771HP GPS User Manual Rev 5 0 HTSB BUS CABLE The HTSB cable consists of 4 cores terminated on either side with RJ 9 connectors The cable should not exceed 1 metre in length and should not be exposed to high electrical noise environments TP TP PS PS Figure 42 HTSB Bus cable X Pa
9. 1771HP GPS USER MANUAL chnolog m Mipcom lt ll Rev 5 0 Sept 2005 1771HP GPS User Manual Rev 5 0 Table of Contents Chapter 1 lntroduction aaa 3 Chapter 2 Module Accessonles nniin nennen 4 Chapter 3 Module Ooeraion sss eee eee eee 5 Chapter 4 InstallingtheModule 9 Chapter gt VO Address Map nase ei 12 Chapter 6 Blocktransfefs 0 00 15 Chapter 7 Module Status see eee ee 20 Appendix A PLC Ladder Example eee 23 Appendix B PS CCA INS cst wen e 30 Appendix C Glossary eee 31 Page 2 of 32 1771HP GPS User Manual Rev 5 0 CHAPTER 1 INTRODUCTION Hiprom presents a Global Positioning System GPS based Time Stamping Input module for the Allen Bradley PLCS The 1771HP GPS module provides precision time stamped events of both the 16 external Inputs and 16 internal PLC bits This document serves to describe the functionality installation configuration and use of the module Page 3 of 32 1771HP GPS User Manual Rev 5 0 CHAPTER 2 MODULE ACCESSORIES Each 1771HP GPS package includes the following components 1771HP GPS module e s 5m RG58 patch lead with a SMA male and TNC male connector on either end s 3 3V active 500 hard mount antenna e
10. ANT Antenna OK 0 Antenna Fault 1 Antenna OK An Antenna fault will occur if the antenna is not present or has been damaged 4 Page 12 of 32 1771HP GPS User Manual Rev 5 0 INPUT IMAGE CONTINUED RBT Ready for Event Block Transfer Read 0 No Events in buffer 1 One or more events in buffer which are ready for transfer via Block Transfer Note that if an Event Block Transfer Read is attempted when the buffer is empty the PLC BTR instruction will fail with Time out error 9 OVL Buffer Overflow Latch 0 Buffer has not overflowed 1 Buffer has Overflowed This Latch will be set when more than 1000 events have been logged to the buffer but not yet transfered by a Block Transfer Once the buffer as Overflowed this bit will remain set until an Overflow Latch Clear command has been issued PPS Pulse per Second This bit transitions from 0 to 1 precisely every second The pulse duty cycle is approximately 50 BT Rsv Reserved for Block Transfer 117 Digital Input 17 Post Digital Filtering 116 Digital Input 16 Post Digital Filtering 115 Digital Input 15 Post Digital Filtering 114 Digital Input 14 Post Digital Filtering 113 Digital Input 13 Post Digital Filtering 112 Digital Input 12 Post Digital Filtering 111 Digital Input 11 Post Digital Filtering 110 Digital Input 10 Post Digital
11. An antenna designed to receive GPS radio navigation signals These antennas typically comprise a Low Noise Amplifier LNA and are known as active and thus require DC power GPS Processor An electronic device that interprets the GPS radio navigation signals received by a GPS antenna and determines a location solution GPS Receiver The combination of a GPS antenna and a GPS processor Owner controller The controller that creates and stores the primary configuration and communication connection to a module PDOP Position Dilution of Precision PDOP is a unitless figure of merit that describes how an uncertainty in pseudo range affects position solutions PRN Pseudo random noise Page 31 of 32 1771HP GPS User Manual Rev 5 0 Each GPS satellite generates its own distinctive PRN code which is modulated onto each carrier The PRN code serves as identification of the satellite as a timing signal and as a subcarrier for the navigation data Producer consumer Intelligent data exchange system devices in which the GPS module produces data without having been polled first Removal and insertion under power RIUP ControlLogix feature that allows a user to install or remove a module or RTB while power is applied Requested packet interval RPI A configurable parameter which defines when the module will multicast data Service A system feature that is performed on user demand Signal to noise ratio A measure of the relative pow
12. age 360 omni directional Elevation Coverage 0 to 90 elevation hemispherical Antenna Patch Lead Coax Type RG 58 Impedance 500 4 Page 30 of 32 1771HP GPS User Manual Rev 5 0 areno xc GLOSSARY Communications format Format that defines the type of information transferred between an I O module and its owner controller This format also defines the tags created for each O module Coordinated System Time CST Timer value which is kept synchronized for all modules within a single ControlBus chassis The CST is a 64 bit number with us resolution Coordinated System Time CST Download The process of transferring the contents of a project on the workstation into the controller Earth Centered Earth Fixed ECEF coordinates Cartesian coordinate system where the X direction is the intersection of the prime meridian Greenwich with the equator The vectors rotate with the earth Z is the direction of the spin axis with positive through the north pole GPS Global Positioning System A constellation of 24 radio navigation not communication satellites which transmit signals used by GPS receivers to determine precise location position velocity and time solutions GPS signals are available world wide 24 hours a day in all weather conditions This system also includes 5 monitor ground stations 1 master control ground station and 3 upload ground stations GPS Antenna
13. al Rungs in File 4 BID Bit Field Distributor Source N9 30 Source Bit Dest Dest Bi Length Add Sources A N9 37 Source B 2000 2000 Dest 18 2002 Page 29 of 32 1771HP GPS User Manual Rev 5 0 arpeno xe SPECIFICATIONS Parameter Specification General Module Location Any Slot Electrical Backplane Current 515mA 5 1V 3mA 24V Schedules Connection Paramters RPI 0 2ms to 750ms GPS Receiver Specification General L1 frequency 1575 42 MHz C A code Standard Positioning Service 8 channel continuous tracking receiver 32 correlators Accuracy Horizontal lt 6 meters 50 lt 9 meters 90 Altitude lt 11 meters 50 lt 18 meters 90 Velocity 0 06 m sec Time 95 ns or 1 RPI Hot Start lt 14 sec 50 lt 18 sec 90 Warm Start lt 38 sec 50 lt 45 sec 90 Cold Start lt 90 sec 50 lt 170 sec 90 Antenna Antenna Connector SMA female connector Frequency Range 1575 42 MHz 1 023 MHz Polarization Right hand circular polarization RHCP Output Impedance 500 VSWR 2 0 maximum Axial Ratio 90 4 0 dB maximum 10 6 dB maximum Gain 35 dB 3 Db Out of Band Rejection fo 1575 42 MHz fo 20 MHz 7dB min fo 30 MHz 12dB min fo 40 MHz 20dB min fo 100 MHz 100dB min Azimuth Cover
14. er levels of a communication signal and noise on a data line SNR is expressed in decibels dB SV Space Vehicle GPS satellite Tag A named area of the controller s memory where data is stored like a variable L J end of document La 4 Page 32 of 32
15. ge 11 of 32 1771HP GPS User Manual Rev 5 0 CHAPTER 5 O ADDRESS MAP The input and output image of the 1771HP GPS module is defined in the following sections 5 1 INPUT IMAGE The data received via input image is dependent on whether the Image Time feature has been enabled Image Time can be enabled by setting EIT Bit 1 of Word 0 of BTW3 before the configuration block transfer BTW3 is executed INPUT IMAGE Image Time Disabled we R I gele el Se ee el anl ia 2 Bee 2 III 999 Zz I2 1212 23 2 3 L 22 2 12 2 2 2 2 et IS E EJE 2 IS IE S559189 51 S INPUT IMAGE Image Time Enabled We ee ale erene ela elini 2 az S 5 5 gt mama e ggg Z Mene S 2 2 amp meme 9 9 l ggg 1 Second Millisecond Figure 5 1 Connected Input Image TNS Time Not Synchronized 0 Time Synchronized to GPS 1 Time NOT Synchronized The module does not have GPS time and thus is unable to accurately time stamp events Note that events will continue to be logged to the buffer but with possible erroneous time stamps Rsv Reserved for Future Use LOC Satellite Lock 0 Not tracking sufficient satellites to provide positional chronological fixes 1 Sufficient satellites being tracked to provide positional fix Typically tracking 4 satellites is sufficient to provide lock
16. ggered if the CBF bit is set EIT Enable Image Time 0 Display Input Status on input image 1 Display Seconds and Milliseconds on input image InputFilter Configures the Digital Input Filter time in milliseconds TimeZone Configures the Time zone configuration 12 to 12 Page 19 of 32 1771HP GPS User Manual Rev 5 0 CHAPTER 7 MODULE STATUS The current status of the module may be ascertained by either reading the status words via the PLC5 backplane or by monitoring the alpha numeric Status Display STATUS DISPLAY TmOk Time Synchronization Ok The module has successfully time synchronised with the GPS satellite system and has accurate time Tm Time Synchronization Failure The module has lost time synchronisation with the GPS satellite system and cannot maintain accurate time Tm x Time Synchronization Failure The module has lost time synchronisation with the GPS satellite system and cannot maintain accurate time Where x denotes a time error code 0 9 IEvt External Input Event Triggered A change in the status of one or more of the External Inputs has generated an event MEvt Memory Event Triggered A change in the status of one or more of the Memory Output Image bits has generated an event Empt Event Buffer Empty There are zero events in the Event Buffer Full Event Buffer Full There are 1000 events in the Event Buffer rendering it unavailable for event
17. he RBT flag will be cleared and subsequent event BTR s should not be attempted Master Slave Topology The precise time stamping in the module is achieved by synchronisation with the GPS satellite system The 1771HP GPS Master module has an on board GPS receiver providing time synchronisation information to not only itself but to other adjacent slaves by means of the HTSB output port The Master module must be connected to an antenna positioned with an unimpeded view of the sky The 1771HP GPS Slave module relies on a Master module in close proximity for time synchronisation via its HTSB input port Each Slave module echos the HTSB signal to its own HTSB output port to be used by the next Slave module if required Time Once the module has successfully synchronised or locked onto the satellite system it is able to render precise time stamping Until this state has been achieved the status TNS flag Time Not Sync ed will be set and all events generated during this time will be labelled with the flag signifying a questionable event time stamp On power up the module defaults to the Universal Time Coordinate UTC defining the local solar mean time at the Greenwich Meridian GMT However the module s time zone can be configured by means of a Block Transfer Write BTW instruction setting the UTC offset that is the difference between the required local time standard and GMT Some examples are listed in the Appendix The mod
18. n Date Time and module Status information BTW3 Successful BTW3 transaction The module has successfully processed data sent from the PLC CPU via a Block Transfer Write Length 3 Although this indicated that configuration data has been sent to the 1771HP GPS module by the PLC it is recommended that the configuration be read back by means of a BTR7 to confirm AntO GPS Antenna Open circuit Indicates the Antenna is not connected or damaged AntX GPS Antenna Short circuit Indicates the Antenna patch lead is shorted or damaged or the Antenna is damaged Sky No Sky Available Indicates the absence of any satellite signals This usually occurs when the Antenna is placed indoors or during power up before Lock is achieved Srch Satellite Search Module is attempting to acquire satellites Cold Cold Initialisation Required Indicates that the module is devoid of internal satellite information Time Satellite Time Synchronisation in Progress Indicates that the module is receiving satellite signals but has not yet been able to synchronise to GPS time Lock Satellite Lock Indicates that sufficient satellites are being tracked to provide position fixing PDOP Position Dilution of Precision Warning Position Dilution of Precision occurs when although there are sufficient satellites in lock 2 or more of them appear to occupy similar positions in the sky and thus the number of effective satellites is decreased Page 21 of 32 1771HP GPS
19. o5 co4 co3 co2 co1 coo ETS Event Time Not Synchronized 0 Event Time Synchronized to GPS 1 Event Time NOT Synchronized The GPS Time synchronization status TNS at the time the event was logged If this bit is set then the event time stamp data should be regarded as suspect MX Memory External Input Event Trigger 0 Event triggered by External Input Change 1 Event triggered by Memory Change EvtMonth The Month when the respective Event was triggered 1 12 EvtDay The Day when the respective Event was triggered 1 31 EvtHour The Hour when the respective Event was triggered 0 23 EvtMinute The Minute when the respective Event was triggered 0 59 4 Page 15 of 32 1771HP GPS User Manual Rev 5 0 EvtSecond The Second when the respective Event was triggered 0 59 EvtMillisecond The Millisecond when the respective Event was triggered 0 999 E17 Memory External Input 17 when Event was triggered E16 Memory External Input 16 when Event was triggered E15 Memory External Input 15 when Event was triggered E14 Memory External Input 14 when Event was triggered E13 Memory External Input 13 when Event was triggered E12 Memory External Input 12 when Event was triggered E11 Memory External Input 11 when Event was triggered E10 Memory E
20. tered Once an event has triggered on a specific input it is ignored for the duration of the filter constant This filter constant is common for all 16 channels and can be configured by the use of a BTW instruction The default value is 10ms Internal Inputs Events are also triggered by a transition of any one or more of the 16 internal memory bits These bits occupy the second word of the module s PLC output image Event Processing Each event that is triggered is logged to the Event Buffer within the 1771HP GPS module This Event Buffer which can store up to 1000 events operates in a First In First Out mode Each entry in the Event Buffer stores the following information pertaining to that specific event Type External Internal Date Time Validity of Time Stamp Snapshot of Inputs Trigger Mask Cause of the Event If there is an unread event in the Event Buffer the 1771HP GPS module notifies the PLC by raising a flag RBT located in the module s PLC input image The user s PLC software should monitor this flag and when ready execute a Block Transfer Read BTR instruction to read the event Page 6 of 32 1771HP GPS User Manual Rev 5 0 Once the event is successfully transferred to the PLC by means of the BTR instruction it is removed from the module s Event Buffer Should the Event Buffer still contain an event the RBT flag will remain set and a further BTR should be executed Once the Event Buffer is empty t
21. ule s Time Zone should only be setup on power up and in the case of daylight saving changes Block Transfers When a Block Transfer BT instruction is issued to the 1771HP GPS it determines the nature of the transfer by the size of the BT Allowable BT s and their sizes are as follows BTR5 Block Transfer Read of Length 5 Read Unload event from Event Buffer Page 7 of 32 1771HP GPS User Manual Rev 5 0 BTR7 Block Transfer Read of Length 7 Read Module s Status and Time BTR9 Block Transfer Read of Length 9 Read Module s GPS Position and Velocity BTW3 Block Transfer Write of Length 3 Configure Module Page 8 of 32 1771HP GPS User Manual Rev 5 0 CHAPTER 4 INSTALLING THE MODULE Install the module e Make sure the PLC system power is off e Slot the 1771HP GPS module into an available slot The module is designed for Half Slot addressing although it can be used in a Single Slot configuration if the module is inserted in an odd slot and the slot to the left of the module is left open e For Master Modules connect a suitable GPS antenna to the antenna port Make sure the GPS antenna has an unobstructed view of the sky e For Slave modules connect the HTSB input port to the HTSB output port of an adjacent Master module or Slave module which in turn is connected a Master e Connect the field cables to the wiring arm and slide it onto the module e Apply power to the PLC system Nel Should a longer
22. utput 14 M13 Memory Event Output 13 M12 Memory Event Output 12 M11 Memory Event Output 11 M10 Memory Event Output 10 M07 Memory Event Output 07 M06 Memory Event Output 06 M05 Memory Event Output 05 M04 Memory Event Output 04 M03 Memory Event Output 03 M02 Memory Event Output 02 M01 Memory Event Output 01 M00 Memory Event Output 00 Page 14 of 32 1771HP GPS User Manual Rev 5 0 CHAPTER 6 BLOCK TRANSFERS The 1771HP GPS module requires the use of Block Transfers to transfer specific data to and from the PLC CPU The type of data packet received or sent during a block transfer is dependant on the Length of the respective Block Transfer Read BTR or Block Transfer Write BTW Only specific BTR and BTW Lengths are permissible the rest will be ignored by the module resulting in a time out error being reported by the respective PLC transfer instruction BTR 5 READ EVENT FROM BUFFER This instruction is used to read an event from the 1771HP GPS event buffer Note that instruction should only be executed if data is available i e when the RBT 1 ggg 12 bit is set BTR Length 5 READ EVENT FROM BUFFER wee olelalelslelsisl fa D I EIER 0 ETS MX EvtMonth EvtDay 1 EvtHour EvtMinute 2 EvtSecond EvtMillisecond 3 E17 E16 E15 14 13 E12 E11 E10 E07 E06 E05 E04 E03 E02 E01 E00 4 c17 c16 c15 c14 C13 C12 c11 C10 CO7 coe c
23. xternal Input 10 when Event was triggered E07 Memory External Input 07 when Event was triggered E06 Memory External Input 06 when Event was triggered E05 Memory External Input 05 when Event was triggered E04 Memory External Input 04 when Event was triggered E03 Memory External Input 03 when Event was triggered E02 Memory External Input 02 when Event was triggered E01 Memory External Input 01 when Event was triggered E00 Memory External Input 00 when Event was triggered C17 Set if Memory External Input 17 changed C16 Set if Memory External Input 16 changed C15 Set if Memory External Input 15 changed C14 Set if Memory External Input 14 changed C13 Set if Memory External Input_13 changed C12 Set if Memory External Input 12 changed C11 Set if Memory External Input_11 changed C10 Set if Memory External Input 10 changed c07 Set if Memory External Input_07 changed c06 Set if Memory External Input_06 changed c05 Set if Memory External Input_05 changed c04 Set if Memory External Input 04 changed c03 Set if Memory External Input 03 changed c02 Set if Memory External Input_02 changed c01 Set if Memory External Input 01 changed c00 Set if Memory External Input 00 changed Page 16 of 32
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