ASR700 man_e
Contents
1. es Gee OMe OS Sli RED g GREEN 5 i vou E STE 373 Sepseveenons Figure 4 Jumper settings for RS485 Interface connection RS485 Terminal block ST7 Meaning J4 J5 J6 3 A T R 4 B T R See Figure 4 5 GND 08 08 2006 Page 12 of 55 ASR700 Reader Operation agr id ent Power supply Connecting terminals 1 and 2 are available on terminal block ST4 A linear regulated power supply of 13 8V is recommended ripple must be smaller than 50mV Maximum current is 1A Typical current is 700mA Power supply Terminal block ST7 Meaning 1 Power supply 13 8V 2 Power supply After connecting the power supply to the ASR700 the yellow LED lights indicating the ASR700 is ready for work The green LED is on after a transponder was read If the red LED is on a tun ing procedure for the antenna is necessary During the tuning process the LED s have different meanings see chapter 2 2 4 Important The chassis ground GND of the reader must be connected to the protective con ductor of the supply network If the antenna is integrated into a metal structure this structure should also be connected to the p2. 46 6 1 P SESRUEUENENE IE RIND ERDE UENFIEPEUENPEEERUESEIEDEHEEEREUEDEUEUEDEUENFSEURBERESEUFLENS UEBESKN 46 62 Seting atthe ASISTOU nee 46 7 Technical Eau 48 8 Influence of noise Interference and metal objects on the reading range 49 8 1 u en 49 8 7 Other electronic egulpITielils a 49 83 Dale cables Dep EUR 49 8 4 Mains RN IURI 49 8 5 Fluorescent and Low Voltage 50 BD JOIHSL IBS occaecas nta Sr eser Slo Era ddr fans RO al S d 50 8 7 Effects Of metal near Tead6ers iiu epi ee Rake 50 Safety 51 10 i pl 51 SPERREN ee 52 11 1 RS YMC MON see 52 11 2 Description of commands and acknowledgement 52 11 3 Description of the regiSlBEB uoce 53 11 4 Factory CUA sts ss utu 5s te Gas adu iod enano ee 54 12 Trouble SO OUING ss cate ederet edd ee 55 08 08 2006 Page 5 of 55 ASR700 Reader Operation agr id ent 1 Introduction Before attempting to use the product for the first time read through the user manual carefully The functional description of the ASR700 reader will help you make best use of the full capabili ties of the system The protocol description in chapter 5 provides you with all the inform
3. 08 08 2006 Page 16 of 55 ASR700 Reader Operation agr id ent Activating the Tune button on the front of the reader starts auto tuning After starting the auto tuning the yellow LED and the red LED are on The reader now measures the voltage of the antenna for all capacitor combinations After measuring the tuning cycle is represented optically All LED s switch off The optical repre sentation starts with the yellow LED followed by the green LED and finishes with the red LED Flashing of one or two of the LED s shows the final result of the auto tuning procedure Signalisation Meaning Red LED is flashing Capacitance to low set one of the jumpers on terminal block ST1 and repeat auto tuning Red and green LED s are flashing Capacitance a bit to low set one of the jumpers on terminal block ST1 and repeat auto tuning Green LED is flashing Auto tuning successful Yellow and green LED s are flashing Capacitance a bit too high remove one of the jumpers on terminal block ST1 and repeat auto tuning Yellow LED is flashing Capacitance too high remove one of the jumpers on terminal block ST1 and repeat auto tuning Table 1 LED meaning of auto tuning result Important Do not hold a transponder into the antenna field during the auto tuning process or during the request of tuning status The auto tuning procedure should be repeated until only the green LED is flashing If necessary remove
4. IDO 02 0 02 OxFO 0x23 Oxt o 9 8 2 0 IDS 06 107 0 ID11 1012 ID13 014 1015 DLE Ptr2 Typt Ptr DLE CRC8 EX 15 0 0 Ox03 7 0 OxBA OxXOS STX Start of Text gt Start of Telegram DST OxFO HOST SRC Source OxF4 gt ASR700 Code 0x23 gt D Output Ptr1 0x11 gt 1 Byte Length 16 Byte ID IDO ID15 0982000009184195 DLE 0x10 Ptr2 0x03 gt 1 Byte Length 2 Byte Transpondertyp 0 1 01 gt HDX Transponder regarding ISO Ptr3 0x00 gt No time stamp Identification of STOP DLE 0x10 gt Before CRC always DLE CRC OxBA ETX 0x03 End of Telegram 5 9 5 Example ID without time stamp Format ASCII and SCP format Ibo IDi 1 2 4 05 06 D7 ws 9 o 0o v9 tT 3 6 o 0 9 eee ox0D IDO ID15 0900316360 CR 0x0D LF 0x0A If in addition to the ID format the Format Option Short is activated see chapter 4 3 2 the data will be transmitted without frame The last characters of the telegram will be CR 0 00 lt LF gt 0x0A 5 9 6 Example ID without time stamp Format ASCII short format ID3 9 4 0 T 0 9 9 D10 1011 1012 013 wi CR LF
5. ov ooa IDO ID15 984010900316360 CR 0x0D LF 0x0A If Short ASCII is activated see chapter 4 3 2 15 data bytes will be transmitted in ASCII nota tion without frame The leading zero is not transmitted The last characters of the telegram will be CR 0x0D lt LF gt 0 08 08 2006 Page 43 of 55 ASR700 Reader Operation agr id ent 5 9 7 Example ID without time stamp Format ASCII short format 16 IDO D1 D2 D4 105 De D7 ibs 1 9 a lc poc oc olus o 9 8 4 D10 1011 1012 1013 1014 1015 CR WF v j 6 g 6 ooa IDO ID15 0984010900316360 CR 0x0D LF 0x0A If Short ASCII 16 is activated see chapter 4 3 2 16 data bytes will be transmitted in ASCII no tation without frame The leading zero is transmitted The last characters of the telegram will be lt CR gt 0x0D lt LF gt 0x0A 08 08 2006 Page 44 of 55 ASR700 Reader Operation agr id ent 5 10 CRC Calculation The 8 Bit CRC will be calculated with the CCITT CRC 8 Polygon x x x x7 1 with all Bytes including STX without the Checksum itself An ESCAPE before the checksum has to be calcu lated as well A frame from the ASR700 to the Host always has a DLE in front of a CRC 5 10 1 CRC Algorithm CRC Algorithm Clichiqu ake Cl Comm Cher CRC Cher byte unsigned char count for coumt Of coat lt Gp
6. 2 2 3 sopa api doo een nenn 10 22 4 FE ee Eee rece 16 UA MEME PC 24 2 3 1 Basic Sa UMS zen en Hei 24 2 3 2 First time use of the ASR700 an 24 2 3 3 Read PLUG GEN coc pei odor este 24 2 3 4 Displaying the read function ce dae cod 24 2 3 5 Output of the transponder data 25 2 3 6 Connecting the reader to a control 26 3 Operating MOd S ne ite seda 27 3 1 Operating in slave request mode Cfg mode register 0 02 27 3 2 Operating in slave continuous mode Cfg mode register 0 01 28 3 3 Operating in master mode Cfg mode register 0 00 29 4 Configuration of the ASR700 reader eene 30 4 41 COTM cio p 30 4 2 Configuration p ssibilities un rne nte nonien etn lender itun 30 4 3 Description of the individual registers nennen nennen 31 4 3 1 Gig Devisen 31 432 Cfg Format ae 31 433 32 4 3 4 Cfg oo me 32 435 CO RE 32 4 3 6 Cfg i50 5 00500 51008 9 5 008 0 51005 9 5 008 0 55
7. 57 8 Get 38 5 7 9 Ge t Single teen 39 57 10 Get c 39 SEES Ets OSU mer 39 Nm 40 NI ree EEUU 40 5 7 14 Reset Al m 40 5 7 15 Retransmit Request 424 22 1 41 2 1 18 5 Ou o 41 SO SUNNY pe ees een ee 41 SNAM CN M IET 41 9 7 19 Start_AutoTuning octet m 42 5 8 Description of the 42 581 ACK c r 42 582 NAK ee E E ETE 42 5 en A Eaa E A E eA E EEE Oa EEEE 42 5 9 1 Formaton Doorsnee M 42 5 9 2 ID with ut time Stamp enable 42 08 08 2006 Page 4 of 55 ASR700 Reader Operation agr id ent 5 9 3 ID wat time Stamp ae ee 43 5 9 4 Example ID without time stamp Format ASCII 43 5 9 5 Example ID without time stamp Format ASCII and SCP format 43 5 9 6 Example ID without time stamp Format ASCII short format 43 5 9 7 Example ID without time stamp Format ASCII short format 16 44 5 10 CRC Calculation 45 5 10 1 ee 45 6 Clock synchronisation of ASR 700
8. DB A 2 SS08520582 85088508 az 73 Figure 3 Jumper settings for RS232 Interface connection RS232 Terminal block ST7 Meaning J4 J5 J6 3 TxD 4 RxD See Figure 3 5 GND An RS232 interface needs three wires TxD RxD and GND TxD Where a device transmits data RxD Where a device receives data GND Ground 08 08 2006 Page 11 of 55 ASR700 Reader Operation agrident To use the RS232 interface connect TxD of the PC to RxD of the ASR700 766 RxD of the PC to TxD of the ASR700 766 and both Ground signals ASR700 766 ST7 Connection PC SUB D 9 pole Pin 3 TxD Pin 2 RxD Pin 4 RxD Pin 3 TxD Pin 5 GND Pin 5 GND To detect TxD and RxD disconnect the data lines TxD and RxD Do Voltage measurement between Ground and one of the lines The TxD line should be approximately 12V could be less The RxD line should be approximately OV 5 12 5113 OD m2 C3 KO 126 C3 n iL 028 o28 C5 Se J
9. it is possible that the corresponding synchronisation will be necessary This is described in chapter 6 11 2 Description of commands and acknowledgements Command Cod Addn Description Request Hex Data Connect_RQ 0x01 Interrogate connection status Get_Amplitude 0x83 Output the amplitude of the antenna Get Config 0x29 Address Output the current configuration Get_HDX_Sample 0x91 Output 512 byte RSSI after field of approximately over the length of a HDX transponder telegram Get_Last_ID 0x24 Interrogate the oldest ID in the buffer Get Phase 0x82 Frequency Output phase difference of antenna Get PhaseAmplitude 0 86 Output phase difference and amplitude of the antenna Frequency Get RSSI 0x85 Output RSSI after field off is transmitted Get Single ID 0x22 Start a read cycle field is switched on before and off after acquisition Get SNR OxOA Output the reader serial number Get TuningResult 0x89 Output result of last auto trim Get Tuning 0x43 l Interrogation of the state of antenna tuning corresponds to what is displayed by the antenna tuning LEDs see chapter 2 2 4 Get_Version 0x09 Output of the reader and software version Reset All 0x18 Copy default configuration from ROM to RAM Retransmit 0x30 Repetition of the last output Request Save Config 2 Copy co
10. HDX and thus speed up acquisition 4 3 6 Cfg Timeout The switch off time of the RF field for a single read cycle in slave request mode can be defined with the configuration register Cfg Timeout Once the time out period has elapsed and no transponder has been registered the read cycle is terminated and a blank ID sent to the control computer The configuration data stored in the EEPROM become effective at switch on The command Config causes the configuration to be changed temporarily in RAM With the Save Config command the modified configuration data are saved in the EEPROM where they remain even when the power supply is off The default values can be restored with the Reset_All command Important Following Reset All the host program must be able to communicate with the default values network address 0x01 Note If a Set Config command accesses an undefined register NAK will be returned The reader can be configured and individual functions demonstrated with the Asrdemo exe demo program which is supplied as standard This program has its own user manual 08 08 2006 Page 32 of 55 ASR700 Reader Operation agr id ent 4 3 7 Optimisations The ASR700 reader is optimised for noise reduction In most applications there is no need to change the optimisations Optimised for noise reduction means that a certain time is need to calculate out parts of the noise This time might be to long f
11. The Get Tuning request does not initiate measurement of the tuning status but simply delivers an already measured frozen status Request Answer Status Tuning status in this example 0x00 PHI Phase shift of the antenna in this example Ox1A A status unequal 0x00 means a new auto tuning should be initiated 5 7 13Get Version Returns the reader and software version Request Answer STX DST SRC ACK CMD VER10 VERY VER8 0x02 OxFO 0x01 0x06 0x09 0x41 0x53 0x52 VER7 VER6 VERS VER4 VERS VER2 VER1 VERO 0x37 0x30 0x30 0x56 0x33 0 2 0x31 0x32 SEP DVER3 DVER2 DVER1 DVERO DLE CRC 8 ETX Ox2F 0x31 0 2 0 30 0x35 0x10 0x01 0x03 VER10 VERO Eleven byte version string in this example ASR700V3 12 SEP Separator DVER3 DVERO Three byte version string signal processing software in this example 1 05 5 7 14Reset All This restores the default configuration factory set values in ROM by overwriting all of the con figuration registers in RAM The network address is set to 0x01 Request Answer CRC 8 08 08 2006 Page 40 of 55 ASR700 Reader Operation agr id ent 5 7 15Retransmit Request The reader returns the last output ID message version serial number ACK NAK etc Request Answer Last output 5 7 16 Save Config Saves the current configuration from RAM to the EEPROM The user configuration saved in the EEPROM is copied to RAM after Pow
12. computer with the command Get Last ID The response comes after max 120 ms If the buffer memory is empty a blank ID message will be transmitted Repetition of the command is a way of emptying the buffer ASR700 Buffer 2 IDs Get Last ID Maximum 2 Ids in buffer Oldest ID is transmitted ID Message Interrogation by Get Single ID starts a new read cycle After a request with Get Single ID if a transponder is detected within the configured time out period the ID will be transmitted a blank ID in the case of failure to pick up a transponder Note In the case of a bus set up using RS485 connection data collision is possible on the bus if several readers are addressed simultaneously with Get Single or Get Last ID Possible applications Point to point connection with RS232 RS485 only one reader is connected by computer serial interface Bus system with RS485 several readers are connected to a computer configured with different network addresses and are interrogated in sequence by the computer for example Get Last ID to reader 1 reply from reader 1 Get Last ID to reader 2 reply from reader 2 and so on 08 08 2006 Page 28 of 55 ASR700 Reader Operation agr id ent 3 3 Operating in master mode Cfg mode register 0x00 In master mode the read function or the RF field is continuously activated After a transponder was detected it s transponder data are transmitted as ID message
13. warranty period for the repaired item or replacement item is 3 months but will always extend to the end of the original warranty period No further claims can be entertained especially claims for compen sation for consequential losses This exclusion of liability does not apply to claims made on the basis of the Product Liability Act c Warranty claims cannot be entertained unless the Agrident system was installed properly and used properly and for the purpose intended No warranty obligations exist in particular when 1 Damage is attributable to improper use of the device to an incorrect connection or incorrect operator action 2 The device was not cared for and maintained in accordance with the manufacturer s recom mendations and this is the cause of the damage The damage is due to any modification to the device The damage is due to force majeure for example lightning strike The damage is due to wear resulting from overstressing mechanical parts 08 08 2006 Page 51 of 55 ASR700 Reader Operation agr id ent 11 Appendix 11 1 RF synchronisation If only one reader is to be accessed at any one time by the control computer in other words only that reader s RF field is activated then wire based synchronisation will not be necessary If several readers are operated in the immediate vicinity of each other in other words closer together than 3 m and the readers have been configured for HDX acquisition
14. 005 0 5 00000 0550058085005 32 4 3 7 EE SERIO 3 001010 ERROR 33 08 08 2006 Page 3 of 55 ASR700 Reader Operation agr id ent b ee 34 5 1 Interface Parameler 2 22 ER 34 52 Frame OPBEEROESEUERENENFEERESEDENERSERDEIEURIEDEIRENIEDRUFRURHRDEENIRERTERRURDEHERIEURIEERIRDRTRERIEDENNERTE 34 9 COMO COUBS caa 34 54 Escape SEQUENCE 34 m oe SBRBEDEDENFUEDEDEDFUEDRUESFIEDFBEBEUEREUSERUEUFUEURBEUEUEERUEUFDEEREEDEUENEIEDEEEEFSEUEDEDRUEBESE 34 5 5 1 Destination address DST uuu ananenann ne 34 5 5 2 SOURCE address 34 23 3 Addiess langes ce 34 5 5 4 Device type 4 2 2 2 4 4 4 2 2 22 2 35 5 6 Message commands and 36 5 7 Description of the individual 37 5 7 1 UE T 37 5 7 2 Get AMPItUJE 37 S3 Get Oe 9 me ee 37 5 7 4 Get HDX Sample ne 37 5 7 5 Get Cast ee 38 5 7 6 Oh RR REDE 38 5 7 7 Gel PhaseAmpliude u 38
15. 2 gt Yellow 3 4 gt RU 5 HDR AA 6 MIS gt mmm Green yibb 8 ib Sie MPE fiutatuning Figure 6 Connection diagram for LEDs and auto tuning switch LEDs and auto tuning switch Terminal block ST4 Meaning 1 5 2 Output Red LED open collector with R 4700 3 5 4 Output Yellow LED open collector with R 470Q 5 5V 6 Output Green LED open collector with R 4700 7 Input for auto tuning switch 8 GND LEDs and auto tuning switch Terminal block ST5 Meaning 1 5V 2 Output Red LED open collector with R 470Q 3 5V 4 Output Yellow LED open collector with R 4700 5 5V 6 Output Green LED open collector without R 7 Input for auto tuning switch 8 GND Important If using terminal block ST5 RJ45 connector there is no built in resistor on the open collector output pin 6 An external resistor RV has to be connected 08 08 2006 Page 15 of 55 ASR700 Reader Operation agr id ent Antennas The antenna is connected to terminal block ST2 Antenna connection Terminal block ST2 Meaning 1 Antenna A1 transparent white 2 Antenna A2 transparent pink 3 Shield G 2 2 4 Auto tuning Every individual antenna will have an inductivity which deviates slightly from the reference va lue Another important tuning criteria are the environment of the mounting place metal
16. AM is output Request ADR Address to read in this example 0x31 mode register Answer CNT Contents of selected configuration register in this example 0x02 5 7 4 Get HDX Sample The reader outputs 512 Bytes RSSI data after field of approximately over the length of a HDX transponder telegram Request Answer STX DST SRC ACK CMD D511 DO DLE CRC8 ETX Ox02 OxFO 0 01 0 06 0 91 xx 0x10 xx 0x03 D5111 D0 512 Byte RSSI data 08 08 2006 Page 37 of 55 ASR700 Reader Operation agr id ent 5 7 5 Get_Last_ID In slave continuous mode a Get_Last_ID command transmits the oldest ID from the buffer The ID message is transmitted immediately If the buffer memory is empty a blank ID will be trans mitted at once The RF field remains switched on In slave request and in master mode the ID last registered is transmitted Request STX DST SRC CMD CRC 8 ETX Answer ID message 5 7 6 Get_Phase The phase shift of the antenna is transmitted Request RES Reserved for future use must be set to OX3A Answer PHI Phase shift of the antenna in this example 0x17 5 7 7 Get PhaseAmplitude The phase shift and the amplitude of the antenna are transmitted Request CP Capacitor pattern used for measurement in this example Ox3F RES Reserved for future use must be set to Ox3A Answer PHI Phase shift of the antenna in this example 0x17 RE
17. OxOE Configuration of the RF interface 1 0x02 FDX B reception activated 2 0x04 HDX reception activated 1 2 0x06 FDX B and HDX activated 5 Obxx1x100x Use 125 kHz this option is possible if only H4002 trans ponders activated available at version 1 61 or later _ 0 34 0 01 Time which the field is active Time out After the time out period the field activated with Get_single_ID is switched off unless a transponder is detected within the time interval after this the field is switched off immediately Time register value x approx 100 ms Value 0x00 also yields approx 100 ms Default values specified Combinations with other mentioned bit combinations for Cfg_Format are possible 08 08 2006 Page 53 of 55 ASR700 Reader Operation 11 4 Factory configuration agrident Parameter Setting Mode Cfg Mode Master mode 0x00 Data output format Cfg Format ASCII output of the ID 0x02 Transponder types Cfg RF All transponder types Ox0E Time out Cfg_Timeout 100ms 0x01 Delay time Cfg_Delaytime 50ms 0x01 Network address Cfg Node 0x01 Interface fixed 9600 Baud 1 Start bit 8 Date bits No Parity 1 Stop bit 08 08 2006 Page 54 of 55 ASR700 Reader Operation agr id ent 12 Trouble shooting For any undescribed problem please contact us Agrident GmbH Steinklippenstr 10 30890 Barsinghausen Germany Tel
18. S Reserved for future use AMP Amplitude value of the antenna in this example 0x67 5 7 8 Get_RSSI The RSSI after field off is transmitted Request Answer RSSI Value of the RSSI in this example 0x02 08 08 2006 Page 38 of 55 ASR700 Reader Operation agr id ent 5 7 9 Get_Single_ID Starts a single read cycle by activating the RF field The response with the ID message will not be given until a transponder has been registered If a transponder is not detected within the configured time out period a blank ID will be returned In the slave request mode after detection of a transponder or after a time out has elapsed the read function terminates and the RF field is switched off In the other modes the ASR700 re turns to its previous state Request STX DST SRC CMD CRC 8 ETX Answer ID message 5 7 10Get_SNR Returns the reader serial number Request Answer STX DST SRC ACK CMD SNR5 SNR4 SNR5 SNRO Six byte serial number in ASCII notation in this example 000101 5 7 11 Get_TuningResult Returns the result of last auto trim Request Answer CP1 Capacitor pattern 1 in this example 0x43 CPO Capacitor pattern 0 in this example 0x5C PHI Phase shift of the antenna in this example 0x16 08 08 2006 Page 39 of 55 ASR700 Reader Operation agrident 5 7 12Get Tuning The tuning status is automatically measured on a cyclical basis every time the RF field is switched on
19. W is 2 i i L RES oot oot QUU ME 1 2345 6 7 8 9 18 sta sta SegdVve goes Ve ds 1 rr 4 Cio 1 7 i 1 i 1 i 1 lee 4 Antenna Connect direct RS485A es RS485A Rr S 51 120 ae Mired Sunc 9 ired Sunc mm CI CO G Figure 16 Connection diagram ASR700 as slave 08 08 2006 Page 47 of 55 ASR700 Reader Operation T Technical data agrident Frequency of the RF carrier generated 134 2 KHz Transponder types supported HDX compatible ISO 11784 5 FDX B compatible ISO 11784 5 Environmental conditions Operation 0 60 Storage 25 80 C Air humidity 5 90 non condensing Dimensions LxBxH 300x 200 x 150 mm Safety class Power supply 13 8V DC max 1A typical 700mA Interface RS232 RS485 Configuration 9600 baud 8 N 1 Weight Approx 3000 g for ASR700 08 08 2006 Page 48 of 55 ASR700 Reader Operation agr id ent 8 Influence of noise Interference and metal objects on the reading range Most of what affects ISO RFID readers is actually electrical interference although it is often more commonly referred as noise Tag reading is a 2 way process but most interference problems affect the much weaker trans missions from tag to reader The tag to reader transmission is at a frequenc
20. agrident Agrident GmbH Steinklippenstr 10 D 30890 Barsinghausen Phone 49 5105 520614 Fax 49 5105 520616 ASR700 Reader Operation Manual V08 08 06 ASR700 Reader Operation agr id ent Copyright 2006 by Agrident GmbH All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without prior written permission of Agrident GmbH Agrident GmbH reserves the right to make changes to any and all parts of this documentation without obligation to notify any person or entity of such changes August 2006 BUS JR Agrident GmbH Steinklippenstr 10 30890 Barsinghausen Germany Phone 49 0 51 05 520614 Fax 49 0 51 05 520616 E Mail mail agrident com www agrident com 08 08 2006 Page 2 of 55 ASR700 Reader Operation agr id ent Contents AEBCOEIUCH OEIL INIRE se ee 6 1 1 Bae We NEED OO REGS 6 2 PRE OU HardWare 7 amine nee 7 2 1 1 RT MEE 7 2 1 2 Contact less identification with 7 2 1 3 Transponder types supported nene 7 2 2 Installing and connecting the ASR700 and 8 2 2 1 Installing the housing 8 2 2 2 Fitting the 9
21. at the serial interface Be fore transmitting the transponder data are prepared in compliance with the chosen output for mat Repeated output of the same ID can be configured with the Cfg Delaytime register Read function activated Communication is unidirectional from the reader to the control computer no response is re quired The complete protocol see chapter 5 of the reader doesn t need to be implemented in the user software if only master mode is used It only makes sense to use master mode in conjunction with point to point communication see chapter 2 3 6 since data collisions at the bus interface could result Possible applications Point to point connection with RS232 RS485 only one reader is connected by computer serial interface 08 08 2006 Page 29 of 55 ASR700 Reader Operation agr id ent 4 Configuration of the ASR700 reader For information on programming the configuration described below please refer to the corre sponding parts of chapter 5 Note on notation of addresses data and commands Single quotation marks designate ASCII values for example 0 zero If a date is preceded by the designation Ox this indicates that the date is in hexadecimal nota tion for example 0x30 hex notation of the ASCII zero Binary data are shown as bit patterns consisting of 0 and 1 for example 00110000 binary notation of the ASCII zero 4 1 Factory configuration The ASR700 reader comes pres
22. ata and not as control code 5 4 Escape sequence If in a data frame a character or codes is equivalent a control code it will be replaced by Sequence Replace DLE STX DLE ETX DLE DLE In the frame of the ASR700 a CRC comes always behind a DLE 5 5 Addresses 5 5 1 Destination address DST The destination address denotes the receiver of a message frame There are individual ad dresses and broadcast addresses available The broadcast address is useful to send a mes sage to several readers at the same time or to communicate with a reader where the individual address is not known 5 5 2 Source address SRC The destination address denotes the transmitter of a message frame The ASR responds with its individual network address independent if the request was a broad cast request or not 5 5 3 Address ranges A broadcast address allows each and every reader to be addressed irrespective of the device type or individual address Avoid broadcast addresses on bus systems because of the possible data collision during the response If the individual address of the reader is unknown use a point to point connection and configure the individual network address with a broadcast request Set Config or get the individual network address Config 08 08 2006 Page 34 of 55 ASR700 Reader Operation agr id ent Each reader type has an individual device specific address Therefore on a bus system with different device types it is p
23. ation you need to integrate the reader into your own application software 1 4 Definition of terms Explanation of abbreviations used in this user manual RF Radio Frequency in this case the long wave band RFID Radio Frequency Identification Method to transmit data without contact us ing transponders Reader A device which is able to communicate with transponders using an internal or external antenna The reader generates a high frequency field in order to get the data of a transponder The received data is transmitted by an inter face to an external controller e g PC etc Transponder Data carrier for RFID applications available in various models and types Raw data Complete data contents of a transponder which means ID and additional in formation for example header or trailer ID Identification number of a transponder ISO 11784 85 International standard regarding the use of RFID technology in the identifica tion of animals it defines the transponder types to be supported and the ID notation FDX Transponder type which transmits its data while the HF field is on full du plex FDX B FDX transponder with 128 bits of raw data ID notation in compliance with ISO 11784 85 HDX Transponder type which transmits its data directly after HF field goes off half duplex 104 bits of raw data ID notation in compliance with ISO 11784 85 Master mode Read mode in which the reader works as master The reader ma
24. decoded as specified in ISO 11784 For a detailed description of ID message see chapter 5 9 In slave request mode an ID is always output only at the moment of detection not at the time when the transponder leaves the detection area 08 08 2006 Page 31 of 55 ASR700 Reader Operation agr id ent 4 3 3 Cfg Mode Configuration register Cfg Mode defines the operating mode Operating Register Data output by RF field Mode Value command from host Slave request 0x02 Get Single ID Is switched on only by command Mode New ID is send to host Get Single ID and switched off Get Last ID after time out or transponder de The ID last registered is sent to tection the host Slave 0x01 Get Last ID Is activated at all times continuous Oldest ID is sent to the host mode Get Single ID New ID is send to host Master 0x00 Reader transmit autonomously Is activated at all times mode with valid new ID Get Single ID New ID is send to host Get Last ID The ID last registered is sent to the host ID can mean either a blank ID or a read transponder number 4 3 4 Cfg Node If the reader is used in a network with several readers it is possible to give the reader an indi vidual network address by using the Cfg Node register 4 3 5 Cfg RF In applications where for example only one transponder type is used the configuration register Cfg RF can be used to hide other types supported by the reader FDX B
25. e as a result only the green LED is flashing The time of the yellow LED is longer then the time of the red LED which means the top of the tuning curve is on the right but still ok Antenna Tuning Data Lx l C 0000000 Uss 134 KHz 7 47 Amplitude Figure 8 Example for tuning curve ok 08 08 2006 Page 18 of 55 ASR700 Reader Operation agr id ent Example Top of tuning curve on right border In this example as a result the green LED and the red LED are flashing The time of the yellow LED is much longer than the time of the red LED the red LED might be not visible that means the top of the tuning curve is on the right border The cause of this prob lem is that the inductance of the antenna is to low for the capacitor set which is used by the auto tune function In this case it is recommended to set one of the jumpers on ST1 and repeat the auto tuning pro cedure If all are jumpers set and the maximum is still on the right border the inductance of the used antenna is on the lower limit for the reader That means that changing s in the environment may reduces the inductance of the antenna so the maximum is outside the right border Antenna Tuning Data Ea 1 C 0000000 Uss 134 KHz 4 98 Amplitude Figure 9 Example for top of tuning curve on right border 08 08 2006 Page 19 of 55 ASR700 Reader Operation agr id ent Example Top of tuning curve outside the right border In this example as a res
26. e interference will go up once the building is occupied Identec Ltd Cryptag Census Site Manual 08 08 2006 Page 49 of 55 ASR700 Reader Operation agr id ent 8 5 Fluorescent and Low Voltage Lighting Both types of lighting can on rare occasions produce interference Some fluorescent lights generate radio frequencies but the emission levels are generally small We have come across Low Voltage lighting systems that generate high emission levels in their transformer module which actually contains a switch mode converter These do not meet cur rent EMC regulations but may have been legal when installed 8 6 Other readers One potential source of interference that is easily overlooked is other readers and other prod ucts that use the same frequency band Low power products are restricted to a few frequency bands so there may be cases where two legitimate products are trying to use the same band An ISO HDX tag will not read properly if it is picking up transmissions from two different ISO readers that are not synchronised Nearly always it won t respond at all but if it has started re sponding to one it may give peculiar responses to both ISO tags do not respond to signals from tagging systems such as shop door systems but the reading range my be affected by their signals 8 7 Effects of metal near readers Usually metal near the antenna of a reader which reduces performance but it is possible to use the effects of me
27. ephone 49 5105 520614 FAX 49 5105 520616 e mail mail agrident com 08 08 2006 Page 55 of 55
28. er on Request Answer 5 7 17 Set Config The Set Config request programs a configuration register in RAM with the following new val ues The corresponding configuration determines how the device will currently work When the device is switched off the changes made with Set Config will be lost unless they are saved with Save Config If the configuration address is not found or the format of the following configuration value is in valid or a configuration is not supported a NAK will be sent Request ADR Address of the configuration register in this example 0x31 gt mode CFG Configuration data to program into selected configuration register in this example 0x00 Answer 5 7 18Set TuningData This command is used to set temporarily the tuning data Example The antenna was moved quickly between two reading positions or the environment changes between two states metal present or not For both situations an auto tuning could be done Start AutoTuning and the result could be got using Get TuningResult For each situation the optimal tuning parameters could be set with Set TuningData Request CP1 Capacitor pattern 1 in this example 0x47 Capacitor pattern 0 in this example Ox5F PHI Phase shift of the antenna in this example 0x1B Answer 08 08 2006 Page 41 of 55 ASR700 Reader Operation agr id ent 5 7 19 Start_AutoTuning Starts the auto tuning process see chapter 2 2 4 The a
29. ered transponder ID is transmitted In this mode the interface protocol is bi directional The control computer here functions as a command transmitter and the reader as the responding partner The receiver confirms com mands Note In the case of a bus set up using RS485 connection data collision is possible on the bus if several readers are addressed simultaneously with Get Single or Get Last ID Possible applications Point to point connection with RS232 RS485 only one reader is connected by computer serial interface Bus system with RS485 several readers are connected to a computer configured with different network addresses and are interrogated in sequence by the computer for example 08 08 2006 Page 27 of 55 ASR700 Reader Operation agr ident Get Single ID to reader 1 reply from reader 1 Get Single ID to reader 2 reply from reader 2 and so on 3 2 Operating in slave continuous mode Cfg mode register 0x01 In slave continuous mode the read function or the RF field is continuously activated It autono mously detects a transponder which is present and sends the transponder data to an internal ring buffer memory two IDs in size Repeated addition of the same ID entry to the buffer can be blocked with the aid of the configurable Delay time Every time an ID is added to the buffer the Delay time is restarted The contents of the buffer can be read out output of the oldest ID by the control
30. est mode 0x00 Master mode Cfg Node 0x36 0x01 Individual network address of a reader range of values 0x00 to OxEF except 0x02 0x03 0x10 Cfg RF 0x33 OxOE Configuration of the RF interface 1 0x02 FDX B reception activated 2 0x04 HDX reception activated 1 2 0x06 FDX B and HDX activated Cfg_ 0x34 0 01 Time in which the field is active Time out After the time out period the field activated with Get_single_ID is switched off unless a transponder is detected within the time interval after this the field 08 08 2006 Page 30 of 55 ASR700 Reader Operation agr ident Register Cfg_ Bits to Hex value Significance of the registers or their configuration Adr set of Settings is switched off immediately Time register value x approx 100 ms Value 0x00 also yields approx 100 ms Default values specified Combinations with other mentioned bit combinations for Cfg_Format are possible Note Configuration of bits not described above will not be accepted and this results in the re sponse Following a Save Cfg command the configuration data are saved in the EEPROM where they will be retained even in the absence of the power supply Important If no Save Cfg command is given the new configuration data will be lost when the power supply is switched off and will have to be redone after switching on again 4 3 Description of the individual registers 4 3 1 Cfg Delayti
31. et with a factory configuration Parameter Setting Mode Cfg Mode Slave request mode 0x02 Data output format Cfg Format ASCII output of the ID 0x02 Transponder types Cfg RF All transponder types OxOE Time out Cfg Timeout 100ms 0x01 Delay time Cfg Delaytime 50ms 0x01 Network address Cfg Node 0x01 Interface fixed 9600 Baud 1 Start bit 8 Date bits No Parity 1 Stop bit For register details see the following chapters 4 2 Configuration possibilities The ASR700 reader can be configured on the application specific basis by means of configura tion commands Here special registers listed in the following table are addressed Register Cfg Bits to Hex value Significance of the registers or their configuration Adr set of Settings Cfg 0x35 0 01 Time interval for repeated ID message Delay time Repetition blockage for time t of an already trans mitted saved ID message Time t register value approx 50 ms 0x00 re sults in no repetition Cfg_ 0x32 0x01 Format of the ID message Format 0 0x01 ASCII notation 1 0x02 Transponder byte structure 0 1 0x03 Compact coding 1 2 0x06 Output of raw data without CRC 0 1 2 0x07 ASCII short format 15 0 1 2 4 0x17 ASCII short format 15 5 0 20 Use SCP format Cfg Mode 0x31 0x00 Operation mode 0x01 Slave continuous mode 0x02 Slave requ
32. exe Autotuning Tuning Data Start Tuning State Get Figure 13 Auto tuning tool For getting the tuning curve of an antenna press Tuning Data and wait until the progress bar has finished After the progress bar has finished click on Show The dialog Antenna Tuning Data appears with the tuning curve of the antenna It s also possible to get the tuning state of the reader by pressing the Get button If the result is 0x00 the combination of reader antenna and environment is optimal otherwise OxFE OxFF 0x01 or 0x02 the combination of reader antenna and environment is not optimal For starting an auto tuning procedure press Start Saving and sending tuning data It s possible to store the tuning curve in a file named dat This can be done by pressing the Save button in the Antenna Tuning Data dialog 08 08 2006 Page 22 of 55 ASR700 Reader Operation agr id ent Antenna Tuning Data 1 0000000 Uss 134 KHz 19 92 Amplitude Figure 14 Example of tuning curve 08 08 2006 Page 23 of 55 ASR700 Reader Operation agr id ent 2 3 Operation 2 3 1 Basic settings The ASR700 reader comes preset with a factory configuration Following installation of the reader and an antenna and the reader has been tuned the reader is ready for operation in combination with suitable application software 2 3 2 First time use of the ASR700 an example Requirements e The power su
33. ible with the ISO 11784 5 standard and can read HDX or FDX B compatible transponders 08 08 2006 Page 7 of 55 ASR700 Reader Operation agr id ent 2 2 Installing and connecting the ASR700 and antenna 2 2 1 Installing the housing A mounting hole is provided at each of the four corners of the bottom part of the housing to al low installation of the ASR700 reader The holes are accessible after removal of the housing cover Four suitable screws are needed to mount the unit at the place of installation We rec ommend flat head screws agriident O Figure 1 Installing the housing 08 08 2006 Page 8 of 55 ASR700 Reader Operation agr id ent 2 2 2 Fitting the antenna If at all possible the antenna should not be permanently exposed to direct sunlight installing the device in an area sheltered from ultraviolet light will extend its service life Installing in the immediate vicinity of metallic objects may lead to detuning of the antenna For this reason do not tune the antenna before the antenna has been installed Avoid fitting to me tallic surfaces since this may result in severe reduction of the reading distance To fasten the antenna to the base use flat head screws with a thread diameter not greater than 5 mm as well as suitable wa
34. ightness thoroughly tightens the screwed conduit entries ST1 Additional tuning capacitors ST2 Antenna ST7 Power supply communication interface and synchronization STA ST5 LED s D1 red D2 green and D9 yellow and tuning switch ST3 ST6 ST10 ST11 ST12 ST13 Reserved for internal use ST8 ST9 Reserved for future use LED1 2 3 Tuning indicators power on yellow and good read green LED22 Indicator for polyswitch LED12 18 20 26 27 28 29 30 Reserved for service J13 Master Slave selection if synchronisation is needed J14 15 16 Communication interface selection Switch 51 52 Reserved for internal use Their function is described in the next sections EEE PG5 PG4 PG3 PG2 PGI 08 08 2006 Page 10 of 55 ASR700 Reader Operation agr id ent Communication interfaces To select and activate the required communication interface the jumpers J4 J5 and J6 must be set as follows 5 12 STi3 CCCO aor TA E 2 2 4 STI ST18 Bgaggagggg CO 1E AE E IE STU IT ET Ts RED g E GREEN YELLOW 5 Ts
35. it requires a large number of characters while binary means a short and effective display but one which is difficult to read The contents of the raw data and the ID message will vary according to the transponder type The raw data is displayed as follows Transponder type Raw data without checksum HDX as per ISO 11784 85 13 bytes 104 bits without 16 prebits 8 bit header FDX B as per ISO 11784 85 16 bytes 128 bits This raw data can now be output as follows Transponder type HDX as per ISO 11784 85 FDX B as per ISO 11784 85 ID message 16 characters decimal as per 16 characters decimal as per ASCII ISO ISO ID message 8 bytes 8 bytes Binary Compact coding ID message 13 bytes 13 bytes Transponder byte structure ID message 13 bytes 16 bytes Raw data ID message 15 bytes 15 bytes Short ASCII 15 ID message 16 bytes 16 bytes Short ASCII 16 ID message 10 bytes 10 bytes ASCII SCP Format For the complete frame structure see chapter 5 08 08 2006 Page 25 of 55 ASR700 Reader Operation agr id ent 2 3 6 Connecting the reader to a control computer Point to point connection This structure is particularly suited to applications with just a few or even a single readers Each reader is connected to the control computer by its own interface To reduce sensitivity to interference and to increase the possible length of the line the RS485 inte
36. kes field on and off permanently and transmits received transponder data automatically Slave request Read mode in which the field is normally off The reader makes field on and off only after a request by the controller If a transponder was read during activation time the ID is transmitted to the controller Slave continuous Read mode in which the reader makes field on and off permanently The reader transmits received transponder data only after a request from an ex ternal controller 08 08 2006 Page 6 of 55 ASR700 Reader Operation agr id ent 2 ASR700 Hardware 2 1 Application 2 1 1 Description The ASR700 is a stationary reader which is used for contact less identification in combination with passive transponders The hardware of the ASR700 reader is designed for noisy environ ments With the on board signal processor it is possible to read transponders where other read ers could not detect them for example in slaughterhouses It has been developed for stationary use Combined with one of our antennas it provides a flexi ble and universal RFID system Antennas with various dimensions and read ranges are available to closely match individual re quirements The ASR700 reader is compatible with the ISO 11784 5 standard and can read HDX or FDX B compatible transponders The transponders are registered within an extremely short time and over a wide detection area Individual parameters of the read function can be configu
37. left border the inductance of the used antenna is on the higher limit for the reader That means that changing s in the environ ment might increases the inductance of the antenna so the maximum is outside the left border Antenna Tuning Data x 1 C 0000000 Uss 134 KHz 273 90 Amplitude Figure 11 Example for top of tuning curve on left border 08 08 2006 Page 21 of 55 ASR700 Reader Operation agr id ent Example Top of tuning curve outside the left border In this example as a result the yellow LED is flashing The time of the yellow LED is much shorter than the time of the red LED the yellow LED might be not visible that means the top of the tuning curve is outside of the left border The cause of this problem is that the inductance of the antenna is to high for the capacitor set which is used by the auto tune function In this case it is recommended to remove one of the jumpers on ST1 and repeat the auto tuning procedure If all jumpers are removed and the maximum is still outside the left border the inductance of the used antenna is too high for the reader That means with this antenna the full reading range could not be reached Pos 1 C 0000000 Uss 134 KHz 229 08 Amplitude 180 360 135 270 30 180 45 30 0 0 Figure 12 Example for top of tuning curve outside the left border Auto tuning tools All tuning curves are taken by using the auto tuning tools of the demo software Asrdemo
38. me The repeat rate of the ID message of the same transponder can be defined by using the con figuration register Cfg_Delaytime It can be set to any interval between 50ms and approximately 13 seconds If Cfg_Delaytime is set to 0x00 the transponder ID will be transmitted only once on serial interface until another transponder has been read If the transponder is read again after this time Delay time in master mode the ID will be output once more at the serial interface independent of how often it is detected within the time interval In slave continuous mode renewed addition to the internal buffer will not take place until the de lay time has elapsed independent of how often it is detected within the time interval In slave request mode the delay time is ignored 4 3 2 Cfg Format ID message The configuration register Cfg Format is used for setting the output format of the transponder ID The transponder data decoded as per ISO 11784 can be displayed in ASCII format directly on simple output terminals For special application three further ASCII formats are available which are transmitted without any checksum CR LF finishes them With the raw data format however the complete transponder data including control and back up data are provided with CRC or parity check components In addition intermediate steps during data conversion can also be selected such as the transponder byte structure or the binary notation for transponder data
39. near the antenna temperature drift etc The environment will influence the inductance and the Q factor of the antenna For example metal near the antenna reduces the Q factor and the inductance of the antenna The inductivity of the externally connected antenna together with the capacitors on the board forms a resonant circuit It should be tuned to the nominal frequency of 134 kHz To get the optimum reading range it s necessary to adapt the capacitor to the antenna To find the optimal tuning for each antenna and each environment an auto tuning function is implemented in the ASR700 Auto tuning means to automatically get the optimal tuning which means the optimal reading range for the combination of reader antenna and environment If one of the parameters changes for example the antenna is mounted in another place a new auto tuning procedure has to be done in order to adapt the reader antenna combination to the new environment Auto tuning is done by a few switch able capacitors on board the ASR700 The auto tuning works only in a certain area fine tuning If the maximum peak is outside this area there are two additional capacitors which can be switch on or off by setting or removing the jumpers on ST1 For to start the auto tuning function it s necessary to connect pin 7 and pin 8 of terminal block ST4 or ST5 or send an auto tuning command from the controller to the ASR700 see chapter 5 7 19 REO GREEN YELLOW
40. nfiguration from RAM into EEPROM Set Config 0x28 Address Set new configuration temporarily RAM cfg new Set TuningData Ox8A trim data Set temporarily trim data Start AutoTuning 0x87 Starts auto tuning process Response Cod Addnl Description Acknowledgements Hex Data ACK 0x06 cmd Last command has been executed following data data NAK 0x15 Last command has not been executed Output Cod Addnl Description Hex Data ID message 0x23 ID Transponder ID 08 08 2006 Page 52 of 55 ASR700 Reader Operation 11 3 Description of the registers agrident Register Cfg Bitsto value Significance of the registers or their configuration Adr Set of settings Cfg_ 0x35 0x01 Time interval for repeated ID message Delaytime Repetition blockage for time t of an already transmit ted saved ID message Time t register value approx 50 ms 0x00 results in no repetition _ 0 32 0 01 Format of the ID message Format 0 0x01 ASCII notation 1 0x02 Transponder byte structure 0 1 0x03 Compact coding 1 2 0x06 Output of raw data without CRC 0 1 2 0x07 ASCII short format 5 0x20 Use SCP format Cfg Mode 0x31 0x00 Operation mode 0x01 Slave continuous mode 0x02 Slave request mode 0x00 Master mode Node 0x36 0x01 Individual network address of a reader Range of values 0x00 to OxEF except 0x02 0x03 0x10 Cfg RF 0x33
41. or set one of the jumpers on terminal block ST1 see Table 1 If it is not possible the inductance of the antenna used might be too low or too high After auto tuning is finished the yellow LED is on and the red LED is off If the red LED is on there were some changes in the environment e g temperature drift or metal is placed near the antenna etc In this case a new auto tuning procedure is recom mended to get the optimum reading range Note The red LED does not mean that the reader is not able to read transponders The red LED only means that the combination of reader antenna and environment is not optimally tuned The green LED represents the top of the tuning curve see the following examples The yellow LED represents the area left from the top of the tuning curve and the red LED represents the area right from the top of the tuning curve That means if the yellow LED is on for approximately the same time as the red LED the top of the tuning curve is in the middle which is optimal 08 08 2006 Page 17 of 55 ASR700 Reader Operation agr id ent Example Optimal tuning curve In this example as a result only the green LED is flashing The time of the yellow LED is approximately the same time of the red LED Don t care about additional peaks Antenna Tuning Data Ea 1 C 0000000 Uss 134 KHz 14 94 Amplitude Figure 7 Example for optimal tuning curve Example Tuning curve ok In this exampl
42. or some applications e g pass troughs gates or raceways For this reason three optimisations for the reading speed are possible The ASR700 is delivered with optimisation High noise setting see below The used optimisation for the application is depending on the size of the antenna the speed of the transponder and the noise of the environment Four optimisations are available at software version 3 16 e High noise setting In this time step the ASR700 reader works with longest possible reading cycles in compli ance with ISO 11784 85 to offer a maximum of noise reduction It is recommended to use this time step mode in noisy environments e g in a slaughter house This is the default time step mode of the ASR700 High speed setting In this time step the ASR700 reader works with shortest possible reading cycles in com pliance with ISO 11784 85 to offer a high reading speed but may be with minor noise re duction depending on the speed of the transponder It is recommended to use this time step mode in noiseless environments were high read ing speed is necessary e g on trucks pass troughs gates or raceways e Median setting This time step is a compromise between Low speed time step and Fast speed time step It offers a higher reading speed than Low speed operating mode and more noise reduction than High speed operating mode e Variable timing This time step combines high reading speed with noise reduction If no tran
43. ossible to address them by using the device type address In point to point connection all address types can be used without restriction In bus systems it s recommended to use an individual network address for each reader The 8 bit address field allows 256 addresses The control characters STX ETX and DLE are not allowed The valid addresses are shown in the following table i 5 5 4 Device type addresses Device type address OxF1 0xF2 Mobile reader ASR reader stationary reader OxF5 0xFE 08 08 2006 Page 35 of 55 ASR700 Reader Operation agrident 5 6 Message commands and acknowledgements The reader supports the following commands Command Cod Addn Description Request Hex Data Connect_RQ 0x01 Interrogate connection status Get Amplitude 0x83 Output the amplitude of the antenna Get Config 0x29 Address Output the current configuration Get_HDX_Sample 0x91 Output 512 byte RSSI after field of approximately over the length of a HDX transponder telegram Get_Last_ID 0x24 Interrogate the oldest ID in the buffer Get_Phase 0x82 Frequency Output phase difference of antenna Get_PhaseAmplitud 0x86 C pattern Output phase difference and amplitude of the e Frequency antenna Get_RSSI 0x85 Output RSSI after field off is transmitted Get_Single_ID 0x22 Start a read cycle field is switched on befo
44. ponder on metal surfaces can have a negative effect on the read distance e Size of the transponder the larger the transponder the larger the read distance with the sa me reader e Running multiple RFID systems simultaneously these can be sources of interference for each other Important Please note that there should be no more than one transponder of the same type in the detection area of the reader at any time since multiple transponders of the same type can under certain circumstances make reliable detection impossible Also avoid the simultaneous presence of two different transponders in off mode see chapter 1 register Cfg Format since this could lead to problems with processing the transponder data 2 3 4 Displaying the read function The ASR700 confirms when a transponder has been read successfully by giving a visual signal the green LED Read LED see chapter 2 2 1 on the top of the housing lights up for a short time 08 08 2006 Page 24 of 55 ASR700 Reader Operation agr id ent 2 3 5 Output of the transponder data The transponder data which are read in by the ASR700 can be made sent in various data for mats as ID messages to the communication interface The ID message data formats can be selected during configuration for example ASCII or bi nary and this means that the user can have optimum integration into an application For exam ple the advantage of ASCII is its good legibility although displaying
45. pply is connected e The RS232 interface is selected e An antenna has been connected and tuned Objective To set the so called master mode This is a read mode in which the RF field is permanently ac tivated As soon as a transponder is detected an ID message is put out by the specified inter face Start up Once the RS232 interface has been connected to one of the serial interfaces of the computer COM1 2 start the demo software Asrdemo exe that should already be installed on the computer For more detailed information on Asrdemo exe please refer to the corresponding manual 2 3 3 Read function Once the read function has been activated different operating modes a transponder brought into the detection area is quickly registered Note that the following factors may reduce the reading range e Alignment of the transponder to the antenna the transponder axis disk transponder central axis standing vertically on the plane of the circular face glass transponder longitudinal axis corresponds to the central axis is parallel to the antenna axis corresponds to the central axis standing vertically on the antenna surface the larger the angel between transponder and antenna axis the shorter the range will be e Temperature range environmental conditions best results will be achieved within the tem perature range approved for operation and the environmental conditions described in chap ter 8 e Installing the trans
46. pports three operating modes which can be configured If changing the operation mode the reader will not accept a mode change command until it has finished processing transmitting a response see chapter 5 any command it has already re ceived Using bus systems see chapter 2 3 6 avoid changing from slave modes see chapter 3 1 3 2 into master mode see chapter 3 3 since this could result in data collisions on the lines The data buffers are cleared when there is a change of operating mode 3 1 Operating in slave request mode Cfg_mode register 0x02 In slave request mode the read function is not activated until reception of a command Get Single ID for description see chapter 5 7 9 in other words a request The user soft ware on the control computer can look after controlling the read function The ID message of an acquired transponder is transmitted once in the appropriate format at the interface After the de tection of a transponder and the transmission of the ID message or after a timeout has elapsed the read function terminates If a transponder is not detected before the timeout elapses a blank ID message will be transmitted Switching the RF field on and off is handled automatically by the ASR700 A fresh transmission of the Get Single ID command causes the read procedure to be re peated When Get Last ID is transmitted see chapter 5 7 5 a new read cycle is not started but in stead the last regist
47. rate magnetic fields and this has been known to give an unexpected increase in range On the other hand it can also concentrate interference sig nals towards a reader What you should be on the lookout for is a situation where a relatively long and thin ferrous metal structure has one end close to the antenna loop 08 08 2006 Page 50 of 55 ASR700 Reader Operation agr id ent 9 Safety and care The manufacturer accepts no liability for damage resulting from improper use or use not consis tent with that described in these operating instructions e The ASR700 reader contains no parts that can be repaired by the user For this reason the Reader may only be repaired by authorised customer service personnel e n both operation and storage of the reader please ensure compliance with the environment conditions specified in the technical data e Clean the ASR700 reader only with a damp cloth Use only water and any commercially available cleaning agent Any modification to the ASR700 reader will render the warranty null and void 10 Warranty The manufacturer of the ASR700 reader Electronic will provide a warranty of 12 months from the day the device is shipped and subject to the following conditions a Without submission of proof of purchase no warranty can be given b In the event that defects are detected the manufacturer is entitled to choose between up to two attempts at repair or a one time replacement of the faulty device The
48. re and off after acquisition Get SNR OxOA Output the reader serial number Get TuningResult 0x89 Output result of last auto trim Get Tuning 0x43 Interrogation of the state of antenna tuning cor responds to what is displayed by the antenna tuning LEDs see chapter 2 2 4 Get_Version 0x09 Output of the reader and software version Reset All 0x18 Copy default configuration from ROM to RAM Retransmit_ 0x30 Repetition of the last output Request Save_Config 2 Copy configuration from RAM into EEPROM Set_Config 0x28 Address Set new configuration temporarily RAM cfg_new Set_TuningData Ox8A data Set temporarily trim data Start AutoTuning 0x87 Starts auto tuning process Response Cod Addn Description Acknowledgements Hex Data ACK 0x06 cmd Last command has been executed following data Data NAK 0x15 cmd Last command has not been executed Output Cod Addn Description Hex Data ID_message 0x23 ID Transponder ID 08 08 2006 Page 36 of 55 ASR700 Reader Operation agr id ent 5 7 Description of the individual messages 5 7 1 Connect RQ The reader sends an acknowledgement when it is operationally ready Request Answer 5 7 2 Get Amplitude Request Answer CRC 8 0x02 OxFO 0x01 0x06 0x83 0x00 0x66 0x10 0x40 0x03 RES Reserved for future use AMP Amplitude value of the antenna in this example 0x66 5 7 3 Get Config The content of the selected configuration register R
49. red It can be run using a computer but application software is then required to drive the reader and to further process the transponder data supplied The message format of the transmitted transponder data is configurable For description of the data protocol see chapter 5 2 1 2 Contact less identification with RFID How RF identification works The items to be identified are fitted with passive transponders which contain the identification data A reader is required for communication with the transponders The reader generates a high frequency field using an antenna This high frequency field activates each transponder which is inside the reading range The high frequency field is used for supplying the trans ponder with energy and for transmitting the transponder data to the reader From the received data the reader generates a data block ID message This ID message is sent out by an inter face to a controller for further processing The reading range depends on the antenna and the environment The following things may influence the reading range see also chapter 8 e Mounting antenna on or near metal e Noisy environment for example electrical machines screens etc e Antenna mistuned see chapter 2 2 4 auto tuning for details The demonstration software Asrdemo exe includes tools for checking the tuning state of the an tenna and the noise of the environment 2 1 3 Transponder types supported The ASR700 reader is compat
50. rface can also be used instead of the RS232 Reader Reader Reader t Control Computer a Reader Each reader can be addressed by the control computer using suitable addresses broadcast addresses individually assigned network or device addresses and by its own interface for ex ample the COM port in PCs Reader 1 COM1 Reader 2 2 Single master bus system This structure is particularly suited to applications with several readers a maximum of 32 per control computer interface An RS485 bus interface is used as interface and this networks multiple readers with the control computer by a 2 wire bus It allows a network to be set up at no great expense e 642 C9 Each reader can be addressed by the control computer of the shared bus interface using the individually assigned network or equipment address This can be for example by an RS232 RS485 converter at a COM port of a PC In order to organize access to the bus the control computer is declared sole master single master network Each reader connected to the bus must have its own individual network ad dress Before installing a reader in a bus structure the reader must be assigned as a yet unassigned network address by point to point connection Configuration of the network address is effected using for example the ASR700 demo software 08 08 2006 Page 26 of 55 ASR700 Reader Operation agr id ent 3 Operating modes The ASR700 su
51. rotective conductor of the supply network 08 08 2006 Page 13 of 55 ASR700 Reader Operation agr ident External signals and auto tuning The following schematic figures show how to connect external LEDs and the auto tuning switch OD for tor gt C3 mis C3 2 C3 E E ozs C 3 o27 C3 C o29 C3 osa zd TITLE LET ELE 99552 Seg 8 sT2 aB 1 ereen 6 H is EIS 5 8 SODSSAFPSCSMNSDASNSAS Figure 5 Connection diagram ASR700 766 08 08 2006 Page 14 of 55 ASR700 Reader Operation agr id ent ASR700 Red Ci BEL R1 b 2m DX B Yellow UBBD uF 5 2 zZ 470 EB Green T1 1 S J Z l IE Autotuning 8 PE AA 50 Red ST5 xS 1 2
52. scout adt ORC amp 0 01 amp OxO1 Je 0 CRC 08 70 CRC SS 12 CRE 0x30 else CRC SS 12 CRC amp Ox byte gt gt 1 return 2 08 08 2006 Page 45 of 55 ASR700 Reader Operation agr id ent 6 Clock synchronisation of ASR 700 readers When two or more antenna fields are overlapping there might be some interferences with FDX transponders This is due to the very small differences of the frequency generated by the oscil lator clock of the readers To prevent this interference it is possible to synchronize the readers this means that the clock generated by the oscillator of one reader is used for the additional readers The reader which generates the oscillator clock is called clock master and the readers that receive the oscillator clock are called clock slave 6 1 Installation e The total length of the cables for the synchronization should not exceed 4 meters e Recommended types of cable for the connection are shielded twisted pair or coaxial cable RG58 or coaxial cable RG174 A connection between UB ST7 pin2 G e g ST7 pin5 or ST7 influences and may improve the reading range If the Agrident power supply is used it s possible to connect earth and ground of the power sup ply fuse F2 which also influences the reading range of the devices 6 2 Setting at the ASR700 Clock master Jumper 3 open that means to use the reader s own oscilla
53. shers Do not use dish head screws for this purpose as this could lead to the plastic frame being damaged The connecting cable to the reader should be fastened in place with cable clips or similar in such a way that the cable does not project and thus become a potential danger Important For advice regarding choosing a suitable antenna contact the ASR700 dealer Under no circumstances is it permitted for functional reasons or in connection with equipment approvals to lengthen the cable of the antenna For information on tuning see chapter 2 2 4 agrident Figure 2 Antenna 08 08 2006 Page 9 of 55 ASR700 Reader Operation agr id ent 2 2 3 Electrical connection The electrical connections for the power supply the communication interfaces with the control ler RS232 or RS485 and for connecting the antenna are made via terminal strips st2 and st7 on the printed circuit board The corresponding cables are routed through the watertight screwed conduit cable entries We recommended that the interface cable be routed through the screwed conduit entry PG3 the power supply cable through PG4 and the antenna cable through PG5 Connections for synchronization should be routed through PG1 and 2 Important Please close the unused screwed conduit entries with the enclosed blind plugs Please use only round cables otherwise the protection class cannot be guaranteed To ensure the water t
54. sponder is in the field the reader operates with shortest possible reading cycles in compliance with ISO 11784 85 If a transponder signal is detected the reading cycle will be stretched if neces sary in compliance with ISO 11784 85 Noise reduction is less than with High noise set ting because of the variable timing Register Cfg Bits to Hex value Significance of the registers or their configuration Adr set of Settings Cfg_ 0x39 0x00 Optimisations Optimisa 0x00 High noise setting tions 1 0x01 High speed setting 0x02 Median setting 1 2 0 03 Variable timing setting Default values specified Send Save_Cfg command after configuration of Cfg_Optimisations otherwise the new configu ration data will be lost when the power supply is switched off and will have to be redone after switching on again 08 08 2006 Page 33 of 55 ASR700 Reader Operation agr id ent 5 Protocol description 5 1 Interface parameter 9600 Baud 1 Start bit 8 Date bits No Parity 1 Stop bit 5 2 Frame n Bytes Data 8 Bit CRC STX Start of a frame DST Destination address Example Broadcast SRC Source address Example OxFO HOST address Message n Byte Data see also ID Output in section 1 6 8Bit CRC concerning CCITT 1 ETX End of frame 5 3 Control codes Start of frame End of frame ESCAPE the control code after the ESCAPE character will be interpreted as d
55. such as televisions and oscilloscopes can also produce interference but they rarely present a real problem 8 2 Other electronic equipment All electronic equipment should be suspect although very rarely does it cause significant inter ference The tendency towards better control of EMC should help but few standards limit unin tentional emission at 134 2 kHz 8 3 Data cables There are cases where computer data cables can cause interference which affects readers This is unusual and most network cables are very good However you should nevertheless be aware of the possibility As with so many interference sources data cables don t create interference until the building is fully functional Beware of doing a Site Survey on an empty building 8 4 Mains cables It is more common to see some interference from mains cables The most usual situation is close to the main distribution board for a building The reason for this is that this may be where there is a separate earth connection for instance to ground gas and water pipes Normally the interference currents in the mains conductors are balanced The current flows along one core of the cable and back down another giving only a small net current to create interference The other connections at a distribution board destroy the balance hence the problem It is best to avoid putting readers close to high power cables sub stations etc unless you are sure This is another case where th
56. tal to advantage Metal close to an aerial loop can act as a short circuit sucking energy out of the reader It will affect the tuning of the antenna but even if the antenna is returned there could still be a loss of range The reading zone will change its shape with the range behind the metal reduced The effect on the reading range is greater when the metal is closer to the antenna loop Many factors affect the range but typically a complete sheet of metal 100 mm 4 inches behind the antenna loop reduces the reading range by about 25 If the metal is ferrous it will have slightly more effect This is after the antenna loop has been retuned When the metal is only close to part of the loop the effect is reduced If the metal is only close to one side of the loop the effect is minimal As metal affects tuning metal doors can pose a problem If the antenna loop is too close it s tuning will change when the doors are open If the tuning is optimised when the doors are open the range will drop when the doors close or vice versa Ferrous metal e g steel introduces new considerations A sheet of ferrous metal reduces the reading range by more than non ferrous metal It also acts as a better screen with the range behind the metal reduced to around 50 of the range in front The shape of the reading zone behind the metal is distorted making the region where tags will be read less predictable Ferrous metal of any shape can concent
57. tor for generating the frequency Clock slave Jumper 3 closed that means use the clock coming in at ST7 pin 9 Clock In If the connection from ST7 pin 8 Clock Out of the master is not made the slave will not work Master STs 13 Ig RED ODE sr T T T oot I I n 1 ed 1 DIL ST 1 2 8 4 5 amp 5 6 r S8 14 STE sT3 SETS T SS 2 Pe TS SS TS d tt r TET db 1714 poco I 7 i i i 4 Antenna lt Connect directa RS4 85A 12 e P RS485A re esee per ees c pecie B ers pene a 12U h l dL 12U ii i Wired Sunc H 2 Wired Sync CI CO 6 H G Figure 15 Connection diagram ASR700 as master 08 08 2006 Page 46 of 55 ASR700 Reader Operation agrident Slave ee P JW amp sed 1 STE NE 2 E rs e GREEN E ml ET YELLO
58. ult the red LED is flashing The time of the yellow LED is much longer than the time of the red LED the red LED might be not visible that means the top of the tuning curve is outside of the right border The cause of this problem is that the inductance of the antenna is to low for the capacitor set which is used by the auto tune function In this case it is recommended to set one of the jumpers on ST1 and repeat the auto tuning pro cedure If all jumpers are set and the maximum is still outside the right border the inductance of the used antenna is too low for the reader That means with this antenna the full reading range could not be reached Antenna Tuning Data Ea 1 C 0000000 Uss 134 KHz 2 49 Amplitude Figure 10 Example for top of tuning curve outside the right border 08 08 2006 Page 20 of 55 ASR700 Reader Operation agr id ent Example Top of tuning curve on left border In this example as a result the green LED and the yellow LED are flashing The time of the yellow LED is much shorter than the time of the red LED the yellow LED might be not visible that means the top of the tuning curve is on the left border The cause of this problem is that the inductance of the antenna is to high for the capacitor set which is used by the auto tune function In this case it is recommended to remove one of the jumpers on ST1 and repeat the auto tuning procedure If all jumpers are removed and the maximum is still on the
59. uto tuning will take about 10 5 Seconds After it is done the ASR700 sends the Telegram for receipt Request STX DST SRC CMD CRC 8 ETX Answer STX DST SRC ACK CMD DLE CRC 8 ETX 5 8 Description of the acknowledgements 5 8 1 ACK Correctly received data and executed commands are acknowledged with an ACK Answer STX DST SRC ACK CMD DATn DATO DLE CRC8 ETX DATn DATO Possible further data 5 8 2 NAK If the frame is valid unrecognised commands or commands which cannot be executed because of wrong data will be acknowledged with NAK Answer CRC 8 5 9 ID Format 5 9 1 Format of ID Description 0x23 O Identification of ID output Length of ID Field incl Ptr1 n Bytes ID Length of Type Field incl Ptr2 n Byte Transpondertyp Length of time field Time stamp hh mm ss aa optional 0 Ptr Stop Character time field only Table 1 Format of ID This format is not valid for ASCII format combined with SCP format see chapter 5 9 5 ASCII short format see chapter 5 9 6 and ASCII short format 16 see chapter 5 9 7 5 9 2 ID without time stamp 0x23 Pti IDO n 2 Table 2 ID without time stamp 08 08 2006 Page 42 of 55 ASR700 Reader Operation agr id ent 5 9 3 ID with time stamp Table 3 ID with time stamp 5 9 4 Example ID without time stamp Format ASCII Examples of ID telegram without time stamp STX DST SRC Id Out
60. y of 134 2 kHz There are many interference sources that have been identified Some are rarely seen but as a result are not easily diagnosed Anything that can produce magnetic fields at around 100 kHz is a potential source of interference The effect of noise and interference increases over propor tionally Therefore these effects are much more severe on stationary readers with larger anten nas 8 1 Computer monitors All computer monitors produce magnetic fields from their scan coils By far the worst are those whose line scan frequency has a harmonic around 100 kHz Modern monitors often change their scan frequency depending on how they are being used The other variable is how well screened the monitor is Some monitors will reduce the reading range of a stationary reader at a distance of 3 meters 10 feet or more Others make no difference at a distance of 1 meter When we quote dis tances in such cases they are taken from the centre of the reader s antenna We advise that users are warned that any computer monitor may have a serious effect and if necessary you should do a Site Survey If you get the result that a monitor isn t making a lot of difference ask them to take it through all the video modes they might use For instance operate under DOS and Windows and if any high resolution graphics packages are used get the user to load them Only after all of this can you be reasonably confident Other CRT cathode ray tube products
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