U9809 UHF RFID Reader User`s Manual V1.2
Contents
1. Command Data Len Adr Cmd CRC 16 Address 0x05 OxXX 0x24 OxXX LSB MSB Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x24 0x00 LSB MSB Notes The Adr is old address not new address 8 4 4 Set Scan Time The host sends this command to change the value of InventoryScanTime of the reader The value is stored in the reader s inner EEPROM and is nonvolatile after reader powered off Command Data Len Adr Cmd z CRC 16 Scantime 0x05 OxXX 0x25 OxXX LSB MSB Parameter Connect Scantime Inventory Scan Time The default value is 0x0A corresponding to 10 100ms 1s The value range is 0x03 0xFF corresponding to 3 100ms 255 100ms When the host tries to set value 0x00 0x02 to InventoryScanTime the reader will set it to OXOA automatically In various environments the actual inventory scan time may be 0 75ms longer than the InventoryScanTime defined Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x25 0x00 LSB MSB 8 4 5 Set Band Rate The host sends this command to change the value of band rate of the reader The value is stored in the reader s inner EEPROM and is nonvolatile after reader powered off Command Data Len Adr Cmd CRC 16 BaudRate 0x05 OxXX 0x28 OxXX LSB MSB Parameter Connect BaudRate The serial port baud rate default value is 57600 bps BaudRate is 0 6 defi2. Command Data Len Adr Cmd CRC 16 MaxFre MinFre 0x06 OxXX 0x22 OxXX OxXX LSB MSB Parameter Connect MaxFre One byte Bit7 Bit6 indicates Frequency Band and Bit5 BitO indicates the reader current maximum frequency MinFre One byte Bit7 Bit6 indicates Frequency Band and Bit5 BitO indicates the reader current minimum frequency maximum frequency gt minimum frequency Frequency Band MaxFre Bit7 MaxFre Bit6 MinFre Bit7 MinFre Bit6 FreqBand 0 0 0 0 User band 0 0 0 1 Chinese band2 0 0 l 0 US band 0 0 1 1 Korean band 0 l 0 0 RFU 0 1 0 l RFU 1 1 l l RFU Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x22 0x00 LSB MSB Various frequency bands formula User band Fs 902 6 N 0 4 MHz N 0 62 Chinese band2 Fs 920 125 N 0 25 MHz N 0 19 US band Fs 902 75 N 0 5 MHz N 0 49 Korean band Fs 917 1 N 0 2 MHz N 0 31 8 4 3 Set Address The host sends this command to change the address Adr of the reader The address data is stored in the reader s inner EEPROM and is nonvolatile after reader powered off The default value of Adr is 0x00 The range of Adr is 0x00 0xFE When the host tries to write OxFF to Adr the reader will set the value to 0x00 automatically 32 U9809 UHF RFID Reader User s Manual V1 2
3. Address The tag s start address to compare Mask It pointed to the data is used to compare Highest bit in the mask correspond with the far left byte in the Condition Content The corresponding bit in the mask is 1 to compare the bit in the Condition Content with the corresponding byte in the tag The corresponding bit in the mask is 0 not compare Word_data 8 bytes It pointed to the array is used to compare Respond Len Adr reCmd Status Num Data CRC 16 OxXX OxXX 0x51 OxXX OxXX UIDI UID2 LSB MSB 28 U9809 UHF RFID Reader User s Manual V1 2 Parameter Connect Status Table Status Connect 0x15 Command over and return inventoried tag s UID baie The reader does not get all 6B tags UID before user defined Inventory ScanTime overflows Command force quit and returns inventoried tags UID 0x17 The reader executes an Inventory command and gets many 6B tags UID Data can not be completed within in a message and then send in multiple 0x18 The reader executes an Inventory command and gets 6B tags UID too much more than the storage capacity of reader and returns inventoried tags UID Num The number of tag detected Data UID Each UID length is 8 bytes The least significant byte of UID is transmitted first 8 3 3 Read Data 6B The command is used to start to read several bytes from the designated address f Data Len
4. Len Adr Cmd Data CRC 16 0x04 OxXX 0x21 LSB MSB Respond Len Adr reCmd Status Data CRC 16 Version Type Tr Type DMaxFre Ox0d OxXX 0x21 0x00 LSB MSB DMinFre Power Scntm Parameter Connect Parameter Length Byte Connect The first byte is version number the second byte is sub version Version 2 number Type 1 The reader type byte 0x03 lines on RRU9803M bd 1 One byte supported protocol information Bitl is 1 for18000 6C T e ee protocol BitO is 1 for 18000 6B protocol Bit7 Bit6 indicates Frequency Band and Bit5 BitO indicates the DMaxFre 1 reader current maximum frequency Bit7 Bit6 indicates Frequency Band and Bit5 BitO indicates the DMinFre l ec reader current minimum frequency i The output power of reader Range is 20 to 30 when Power is ower 0x00 it means the output power of reader unknown Inventory Scan Time the value of time limit for inventory Scntm 1 command Frequency Band MaxFre Bit7 MaxFre Bit6 MinFre Bit7 MinFre Bit6 FreqBand 0 0 0 0 User band 0 0 0 1 Chinese band2 0 0 1 0 US band 0 0 1 1 Korean band 0 1 0 0 RFU 31 U9809 UHF RFID Reader User s Manual V1 2 8 4 2 Set Region The host sends this command to change the current region of the reader The value is stored in the reader s inner EEPROM and is nonvolatile after reader powered off
5. DATA BLOCK FORMAT 3 1 COMMAND DATA BLOCK Len Adr Cmd Data LSB CRC16 MSB CRCI6 COMMENT LENGTH Byte COMMENT Len l Command data block length 1 byte not including itself Value range is 4 96 The number of Len equals the length of Data plus 4 Adr l Reader address 1 byte Value range is 0 254 Only will the reader conforming to the address response the command data block Value 255 is broadcasting address All the readers will response to the command data block with a broadcasting address The default value shall be zero Cmd 1 Operation command symbol 1 byte Data Variable Operation command parameters There is no parameter if the LEN item equals 4 LSB CRC16 1 CRC 16 LSB CRC 16 checksum 2 bytes with least significant byte first MSB CRC16 1 CRC 16 MSB 3 2 RESPONSE DATA BLOCK Len Adr reCmd Status Data LSB CRC16 MSB CRC16 COMMENT LENGTH Byte COMMENT Len l Response data block length 1 byte not including itself The number of Len equals the length of Data plus 5 Adr 1 Reader address 1 byte Value rang is 0 254 reCmd l Response command symbol 1 byte If the command is unrecognized the reCmd is 0x00 Status 1 Result status value 1byte Refer to following table for details Data Variable Response data There is no this item if Len equals 5 LSB CRCI6 1 CRC16 LSB CRC 16 checksum 2 bytes with le
6. Adr Cmd CRC 16 Address ID Num 0x0e OxXX 0x52 OxXX 8 Bytes OxXX LSB MSB Parameter Connect Address The tag s start byte address to read The range is 0 223 Otherwise it returns the parameters error message Num In byte units It specifies the number of 8 bit bytes to be read The value range is 1 32 and Address Num must be less than 224 Otherwise it returns the parameters error message ID 8 bytes it is 6B tag s UID The low byte is fist Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x52 0x00 Data LSB MSB Data It is read data the low byte is fist 8 3 4 Write Data 6B The command is used to start to write several bytes from the designated address Command Data Len Adr Cmd CRC 16 Address ID Wdata OxXX OxXX 0x53 OxXX 8 Bytes Variable LSB MSB Parameter Connect Address The tag s start byte address to write The range is 8 223 Otherwise it returns the parameters error 29 U9809 UHF RFID Reader User s Manual V1 2 message ID 8 bytes it is 6B tag s UID The low byte is fist Wdata It pointed to the array to write range is 1 32 If Address WriteDataLen greater than 224 or Wdata greater than 32 or is zero reader will return parameter error message The high bytes of Wdata write in the low address in tag Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x53 0x00 Data LSB
7. Or Alarm There may be the 5 OxXX OxXX 0x19 LSB MSB is Access tag does not support the Password command or the tag s access password be zero Command Return status OxF9 when 5 OxXX OxXX OxF9 LSB MSB I execute error Command execute error Return status OxFA when Get Tag Poor there are some tags in the 5 OxXX OxXX OxFA 7 LSB MSB Communicati effective field but Poor on Inoperable Communication between reader and tag Return status OxFB when No Tag i 5 OxXX OxXX OxFB LSB MSB there is no tag in the ve Operable effective field U9809 UHF RFID Reader User s Manual V1 2 Err_cod Tag Return Return status OxFC when OxXX OxXX OxFC LSB MSB e Error Code the tag returns Error Code Return status OxFD when Command the length of command OxXX OxXX OxFD LSB MSB zy length wrong operands doesn t conform to the command request Return status OxFE when Illegal the command is an OxXX 0x00 OxFE LSB MSB command unrecognized command or CRC error Return status OxFF when Parameter OxXX OxXX OxFF i LSB MSB E the command parameter rror is invalid U9809 UHF RFID Reader User s Manual V1 2 6 TAG ERROR CODES EPC C1G2 ISO18000 6C Tag error codes Error Code Support Error Code Error Code Name Error Description Catch all for errors not covered by other 0x00 Other error d codes The specified memory location does not 0x0
8. be zero MaskAdr One byte it specifies the starting byte address for the memory mask For example MaskAdr 0x00 specifies the first EPC bytes MaskAdr 0x01 specifies the second EPC bytes etc MaskLen One byte it is the mask length That a Tag compares against the memory location that begins at MaskAdr and ends MaskLen bytes later MaskAdr MaskLen must be less the length of ECP number Otherwise it returns the parameters error message Notes That a tag compares against complete EPC number when the MaskAdr and MaskLen vacant Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x08 0x00 LSB MSB 8 2 9 ReadProtect Without EPC The command is used to random set random one tag read protection in the effective field The tag must be having the same access password Only NXP s UCODE EPC G2X tags valid Command Data Len Adr Cmd CRC 16 Pwd 0x08 OxXX 0x09 4Byte LSB MSB Parameter Connect Pwd Four bytes they are Access Password The most significant word of Access Password is first the most significant byte of word is first The first bit of 32 bit access password is left and the last bit of 32 bit access password is right Tags Access Password can not be zero 22 U9809 UHF RFID Reader User s Manual V1 2 Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x09 0x00 LSB MSB 8 2 10 Reset R
9. is the mask length That a Tag compares against the memory location that begins at MaskAdr and ends MaskLen bytes later MaskAdr MaskLen must be less the length of ECP number Otherwise it returns the parameters error message Notes That a tag compares against complete EPC number when the MaskAdr and MaskLen vacant Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x10 0x00 LSB MSB 27 U9809 UHF RFID Reader User s Manual V1 2 8 3 18000 6B COMMAND 8 3 1 Inventory Signal 6B The command is used to Inventory only one tag in the effective field and get their ID values If more than one tag in the effective field at the same time reader may be get nothing Command Len Adr Cmd CRC 16 0x04 OxXX 0x50 LSB MSB Respond Len Adr reCmd Status Data CRC 16 0x0d 0xXX 0x50 0x00 ID LSB MSB Parameter Connect ID 8 bytes it is 6B tag s UID The low byte is fist 8 3 2 Inventory Multiple 6B The command is used to according to the given conditions Inventory tags in the effective field and get their ID values Command Data Len Adr Cmd CRC 16 Condition Address Mask Word data OxOf OxXX 0x51 0xXX 0xXX 0xXX 8 Bytes LSB MSB Parameter Connect Condition The condition of detecting tags 0x00 equal condition 0x01 unequal condition 0x02 greater than condition 0x03 lower than condition
10. location that begins at MaskAdr and ends MaskLen bytes later MaskAdr MaskLen must be less the length of ECP number Otherwise it returns the parameters error message Notes That a tag compares against complete EPC number when the MaskAdr and MaskLen vacant Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x03 0x00 LSB MSB 8 2 4 Write EPC The command is used to write EPC number in a Tag s EPC memory Random write one tag in the effective field Command Data Len Adr Cmd CRC 16 ENum Pwd WEPC OxXX OxXX 0x04 OxXX 4Byte Variable LSB MSB Parameter Connect ENum One byte it specifies the array of the word to be written EPC length in word units The length of EPC is not more than 15 words can t be 0 Otherwise it returns the parameters error message U9809 UHF RFID Reader User s Manual V1 2 Pwd Four bytes they are Access Password The most significant word of Access Password is first the most significant byte of word is first The first bit of 32 bit access password is left and the last bit of 32 bit access password is right Only done the memory set to lock and the Access Password is not zero it needs Pwd In other cases Pwd can be zero WEPC Be written EPC value WEPC is not more than 15 words can t be 0 Otherwise it returns the parameters error message Respond Len Adr reCmd Status Data C
11. locked Return status 0x12 when OxXX 0x55 0x12 LSB MSB cannot lock it the 6B Tag has been again locked Save Fail Return status 0x13 when OxXX 0xXX 0x13 LSB MSB Can Use the parameter is save fail Before Power Return status 0x14 when OxXX OxXX 0x14 LSB MSB Cannot adjust the power can not be adjusted U9809 UHF RFID Reader User s Manual V1 2 Return status 0x15 to host when the reader executes Length an Inventory command and Return before of gets some complete 6B OxXX 0x51 OX1S5 LSB MSB Inventory Data i tags UID before finished 5 user defined Inventory ScanTime finished Return status 0x16 when the reader executes an Length f Inventory Sca Inventory command and o Data OxXX 0x51 Oxl6 LSB MSB n Time does not get all 6B tags ata 45 overflow UID before user defined Inventory ScanTime overflows Return status 0x17 when the reader executes an Length f Inventory command and o OxXX 0x51 OxlT7 zzv LSB MSB More Data gets many 6B tags UID Data ns Data can not be completed within in a message and then send in multiple Return status 0x18 when Length the reader executes an Reader of Inventory command and OxXX 0x51 Ox18 LSB MSB module flash Data gets 6B tags UID too is Full 5 much more than the storage capacity of reader Return status 0x19 when Not Support the tag can t set EAS Command
12. 3 Memory overrun exist or the EPC length field is not supported by the Tag Error specific ITE The specified memory location is locked 0x04 Memory locked and or perm locked and is either not writeable or not readable i The Tag has insufficient power to 0x0b Insufficient power perform the memory write operation The Tag does not support error specific Non specific OxOf Non specific error pp E codes 7 TAG MEMORY AND ISSUES REQUIRING ATTENTION A EPC C1G2 TAG G2 TAG Tag memory shall be logically separated into four distinct banks each of which may comprise zero or more memory words The four storage areas Reserved memory password memory shall contain the kill and and or access passwords if passwords are implemented on the Tag The kill password shall be stored at memory addresses 00h to 1Fh the access password shall be stored at memory addresses 20h to 3Fh EPC memory shall contain a Stored CRC at memory addresses 00h to OFh a Stored PC at addresses 10h to 1Fh a code such as an EPC and hereafter referred to as an EPC that identifies the object to which the Tag is or will be attached beginning at address 20h and if the Tag implements Extended Protocol Control XPC then either one or two XPC word s beginning at address 210h TID memory shall contain an 8 bit ISO IEC 15963 allocation class identifier at memory locations 00h to 07h TID memory shall contain sufficient identifying informatio
13. EPC number EPC numbers in word units and must be an integer number of lengths High word first the high byte of each word first Requirement given here is a complete EPC number Mem One byte It specifies whether the Read accesses Password EPC TID or User memory 0x00 Password memory 0x01 EPC memory 0x02 TID memory 0x03 User memory Other values reserved Other value when error occurred WordPtr One byte It specifies the starting word address for the memory read For example WordPtr 00h specifies the first 16 bit memory word WordPtr 01h specifies the second 16 bit memory word etc Num One byte It specifies the number of 16 bit words to be read The value is less then 120 can not be 0 15 U9809 UHF RFID Reader User s Manual V1 2 Otherwise it returns the parameters error message Pwd Four bytes they are Access Password The most significant word of Access Password is first the most significant byte of word is first The first bit of 32 bit access password is left and the last bit of 32 bit access password is right Only done the memory set to lock and the Tag s Access Password is not zero it needs right Pwd In other cases Pwd can be zero MaskAdr One byte it specifies the starting byte address for the memory mask For example MaskAdr 0x00 specifies the first EPC bytes MaskAdr 0x01 specifies the second EPC bytes etc MaskLen One byte it is the mask length That a Tag compares against the memor
14. MSB 8 3 5 Check Lock 6B The command is used to check whether the designated byte is locked Command Data Len Adr Cmd CRC 16 Address ID Ox0d OxXX 0x54 OxXX 8 Bytes LSB MSB Parameter Connect Address The tag s byte address to check lock The range is 0 223 Otherwise it returns the parameters error message ID 8 bytes it is 6B tag s UID The low byte is fist Respond Len Adr reCmd Status Data CRC 16 0x06 OxXX 0x54 0x00 LockState LSB MSB LockState 0x00 Unlocked 0x01 locked 8 3 6 Lock 6B The command is used to lock the designated byte Command Data Len Adr Cmd CRC 16 Address ID Ox0d OxXX 0x55 OxXX 8 Bytes LSB MSB Parameter Connect Address The tag s byte address to lock The range is 8 223 Otherwise it returns the parameters error message ID 8 bytes it is 6B tag s UID The low byte is fist 30 U9809 UHF RFID Reader User s Manual V1 2 Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x55 0x00 LSB MSB 8 4 READ DEFINED COMMAND 8 4 1 Get Reader Information The host sends this command to get the reader s information including reader s address Adr firmware version reader type Type supported protocol Tr Type reader power work frequency and InventoryScanTime value Command
15. MSB Two kinds of command reader cannot respond 1 The reader address error 2 The command is incomplete namely the command Len is longer than the actual command length 82 EPC C1G2 COMMAND 8 2 1 Inventory The command function is used to inventory tags in the effective field and get their EPC values The reader executes an Inventory command and gets tag s EPC before any other operation The user may accord need to establish this command the first biggest running time Inventory scan time before the command enquires The reader completes command execution in inventory ScanTime not including host sending data time except inventory command after receiving host command and returns the results The default value is 0xOA corresponding to 10 100ms 1s The value range is 0x03 0xFF corresponding to 3 100ms 255 100ms In various environments the actual inventory scan time may be 0 75ms longer than the InventoryScanTime defined If the inventory scan time establishes excessively short possibly will inventory no tag appear in inventory scan time Command Len Adr Cmd Data CRC 16 0x04 OxXX 0x01 LSB MSB Respond Data Len Adr reCmd Status CRC 16 Num EPC ID OxXX OxXX 0x01 OxXX OxXX EPC 1 EPC 2 EPC 3 LSB MSB U9809 UHF RFID Reader User s Manual V1 2 Parameter Connect Status Table Status Connect 0x01 Command over and return invento
16. RC 16 0x05 OxXX 0x04 0x00 LSB MSB 8 2 5 Kill Tag The command is used to kill tag After the tag killed it never process command Command Len Adr Cmd Data CRC 16 OxXX OxXX 0x05 LSB MSB Data as follows Data ENum EPC Killpwd MaskAdr MaskLen OxXX Variable 4Byte OxXX OxXX Parameter Connect ENum EPC length in word units The length of EPC is less than 15 words can be 0 or 15 Otherwise it returns the parameters error message EPC Be operated tag s EPC number EPC length according to the decision of the EPC number EPC numbers in word units and must be an integer number of lengths High word first the high byte of each word first Requirement given here is a complete EPC number Killpwd Four bytes they are Kill Password The most significant word of Kill Password is first the most significant byte of word is first The first bit of 32 bit Kill Password is left and the last bit of 32 bit Kill Password is right Tag s whose Kill Password is zero do not execute a kill operation if such a Tag receives a Kill command it ignores the command and backscatters an error code MaskAdr One byte it specifies the starting byte address for the memory mask For example MaskAdr 0x00 specifies the first EPC bytes MaskAdr 0x01 specifies the second EPC bytes etc MaskLen One byte it is the mask length That a Tag compares against the memory location that begi
17. U9809 UHF RFID Reader User s Manual V1 2 6 T Content COMMUNICATION INTERFACE SPECIFICATION e eeeee eene eene a ene tn atas ense tn stas ts tss tn senses sns stn sta 4 PROTOCOL DESCRIPTION e eeeeee eee eene tata etos tn stata stas ta sesso stas tn sesenta senses essen senses essen senses eas tn eta 4 DATA BLOCK FORMAT eooeee chest tore to tos d vae vpoe ope tos eae Voseba eese suse ui eese saa spe pbe tc eeu i sap ese tone ad evo eh eode sued Vosa tiae Sud ug 5 3 1 COMMAND DATA BLOCK nssr iiis iii i oiii s a E 5 3 2 RESPONSE DATA BLOCK fcsssisscasssinscensssesssedsiconosasaceatsvocessealvacsundesdensseseesoundaconssssecasendbosonsedtveasensessedees 5 OPERATION COMMAND CMD SUMMARY cccssssssscssssssssscscscscsssssccscssscsssssecsecsscssessccsecsesssessecsessosens 6 4 1 EPC C1 G2 1S018000 6C COMMAND ssesssssssscscssseososcscseososcscsscecsoscscssoeoscscssosososcscssoscscseseesososesesecse 6 4 2 18000 6B COMMAND er 8 4 3 READER DEFINED COMMAND essessesossssesessesessesesossesossesossesesoesesossesossesossesesoesesossesossesosoesesoesesessesessese 8 LIST OF COMMAND EXECUTION RESULT STATUS sessesessesesoesesessesesossesessesossesossesesossesossesossesossssesoss 9 TAG ERROR CODES DLE 13 TAG MEMORY AND ISSUES REQUIRING ATTENTION cssssssscsscsccssssssssecsesssssseesecsessssssesscesssoosees 13 DETAILED DESCRIPTION OF OPERATION COMMAND cccsssscsscscssssssccsecsessessscss
18. ad several bytes from the 3 Read Data 6B 0x52 designated address i The function is used to start to write several bytes from the 4 Write Data 6B 0x53 designated address The function is used to check whether the designated byte is 5 Check Lock 6B 0x54 locked 6 Lock 6B 0x55 The function is used to lock the designated byte 4 3 READER DEFINED COMMAND NUM COMMAND CODE CONNECT This function is used to get reader related information such as GetReader 1 f 0x21 reader address Adr firmware version supported protocol Information type Inventory ScanTime power and frequency Sets the current region The function is used to set the reader 2 Set Region 0x22 mE I working of the lower limit and the upper limit of frequency This function is used to set a new address of the reader The address value will store in reader s inner nonvolatile memory Default address value is 0x00 The value range is 0x00 0xFE 3 Set Address 0x24 i The address OxFF is reserved as the broadcasting address When user tries to write a OxFF to Adr the reader will set the value to 0x00 automatically This function is used to set a new value to Inventory ScanTime i of an appointed reader The range is 3 255 corresponding to 4 Set ScanTime 0x25 3 100ms 255 100ms Inventory ScanTime The default value of Inventory ScanTime is 10 100ms 5 Set Baud Rate 0x28 The function is used to change the serial port baud rate 6 Set Powe
19. ast significant byte first MSB CRC16 1 CRC16 MSB The default value of the reader address is 0x00 The host may change it by using reader defined command Write Adr Cyclic Redundancy Check CRC computation includes all data from Len A reference CRC computation program is presented as follow C Example define PRESET VALUE OxFFFF define POLYNOMIAL 0x8408 unsigned int uiCrc16Cal unsigned char const unsigned char ucl ucJ unsigned short int uiCrcValue PRESET VALUE for ucl 0 ucI lt ucX ucI j U9809 UHF RFID Reader User s Manual V1 2 pucY unsigned char ucX uiCrcValue uiCrcValue pucY ucl for ucJ 0 ucJ lt 8 ucJ if uiCrc Value amp 0x0001 uiCrc Value uiCrcValue gt gt 1 POLYNOMIAL uiCrc Value uiCreValue gt gt 1 return uiCrc Value 4 OPERATION COMMAND CMD SUMMARY 4 1 EPC C1 G2 1SO18000 6C COMMAND NUM COMMAND CODE COMMENT The function is used to inventory tags in the effective field and l Inventory 0x01 get their EPC values The function is used to read part or all of a Tag s Password 2 Read Data 0x02 EPC TID or User memory To the word as a unit start to read data from the designated address The function is used to write several words in a Tag s 3 Write Data 0x03 Reserved EPC TID or User memory U9809 UHF RFID Reader User s Manual V1 2 Write EPC 0x04 The func
20. ccess Password MaskAdr One byte it specifies the starting byte address for the memory mask For example MaskAdr 0x00 specifies the first EPC bytes MaskAdr 0x01 specifies the second EPC bytes etc MaskLen One byte it is the mask length That a Tag compares against the memory location that begins at MaskAdr and ends MaskLen bytes later MaskAdr MaskLen must be less the length of ECP number Otherwise it returns the parameters error message Notes That a tag compares against complete EPC number when the MaskAdr and MaskLen vacant Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x06 0x00 LSB MSB 8 2 7 BlockErase The command is used to erase multiple words in a Tag s Password EPC TID or User memory Command Len Adr Cmd Data CRC 16 OxXX OxXX 0x07 LSB MSB Data as follows Data ENum EPC Mem WordPtr Num Pwd MaskAdr MaskLen OxXX Variable OxXX OxXX OxXX 4Byte OxXX OxXX Parameter Connect ENum EPC length in word units The length of EPC is less than 15 words can be 0 or 15 Otherwise it returns the parameters error message 20 U9809 UHF RFID Reader User s Manual V1 2 EPC Be operated tag s EPC number EPC length according to the decision of the EPC number EPC numbers in word units and must be an integer number of lengths High word first the high byte of each word first Requirement gi
21. ccssssssssecsecsesseeees 14 HANS OUIIEWDROMUAMID 14 8 2 EPC eite xXe eC njMeEE 14 AVAL B Sire Ao 14 pA X rnBiPicE E 15 8 2 3 Write Data eeeeeee eerie e eese eese esses etna etas etas etas etas etas etse tse NNE NAREN NASES a ai 16 82 4 Write ERG eise eese votoseec ten Pus eset te sd V esses evt sete d Fees t ese gus Poe oss a rave Ro boe e aee pepe gebe Cua Soss rSR eee Yo Pa eee eT 17 IPS VTL P pisse EEUU 18 IVA E ie enc 19 8 2 7 BlockE ETT RR 20 8 2 8 ReadProtect With EBQ eee tieo ea eerte eo eara eroe ren eee orae on ea eoe ae nere oh ea eni ease skessa soea seo Estan pape pEE 21 8 2 9 ReadProtect Without EPC 2 cccccscccecsnscesssveccssevaccsescsessvesecesssessnsresenvescasstacseesosccenaseteasevseseresee 22 Puis hlguarzdeme i N 23 8 2 11 Check Read Protect eere eerie eese eese eese tenen etse tassa etse ta setas ta sets etse tse ts etse ts sess sariri 23 IVA PAL VP AE a ee M 24 8 2 13 Check EAS ATANI RR 24 8 2 14 User Block Lork aa Seeeisiri eoni eseni ornet yakeni ki enket ETs ne iKV ESAP ES EENE VERECA PARE EKE ENEE NPESE EEEE IREEN 25 8 2 15 Inventory SUCI nete 26 8 2 16 Block IA LR 26 8 3 18000 6B COMMAND 28 8 3 LInventory Signal 6B rarnana sir ARAIRE ORTNER ESER ATORE R 28 8 3 2 Inventory Multiple 6B scscccssccssccscccsecssccssccssscsscssc
22. dr MaskLen must be less the length of ECP number Otherwise it returns the parameters error message Notes That a tag compares against complete EPC number when the MaskAdr and MaskLen vacant Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x0c 0x00 LSB MSB 8 2 13 Check EAS Alarm The function is used to check EAS status bit of any tag in the effective field Only NXP s UCODE EPC G2X tags valid 24 U9809 UHF RFID Reader User s Manual V1 2 Command Len Adr Cmd Data CRC 16 0x04 OxXX Ox0d LSB MSB Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX Ox0d 0x00 LSB MSB It returns no tag actionable message when No EAS alarm 8 2 14 User Block Lock The command is used to permanently lock the designated data in designated tag s user memory Block Lock command supports an additional locking mechanism which allows the locking of individual 32 bit blocks rows in the 224 bit User Memory Once locked these locks cannot be unlocked Only NXP s UCODE EPC G2X tags valid Command Len Adr Cmd Data CRC 16 OxXX OxXX 0x0e LSB MSB Data as follows Data ENum EPC pwd WrdPointer MaskAdr MaskLen OxXX Variable 4Byte OxXX OxXX OxXX Parameter Connect ENum EPC length in word units The length of EPC is less than 15 words can be 0 or 15 O
23. e default value is0 Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x33 0x00 LSB MSB 34
24. e tag in the effective field whether the tag is protected It can not check the tag whether the tag support protection setting Only NXP s UCODE EPC G2X tags valid EAS Alarm 0x0c The function is used to set or reset the EAS status bit of designated tag Only NXP s UCODE EPC G2X tags valid Check EAS Alarm Ox0d The function is used to check EAS status bit of any tag in the effective field Only NXP s UCODE EPC G2X tags valid Block Lock 0x0e The function is used to permanently lock the designated data in designated tag s user memory The locked data can be read only but not written and not erased Only NXP s UCODE EPC G2X tags valid Inventory Single OxOf The function is used to inventory one tag in the effective field and get their EPC values Block Write 0x10 The function is used to write multiple words in a Tag s Reserved EPC TID or User memory 4 2 18000 6B COMMAND U9809 UHF RFID Reader User s Manual V1 2 NUM COMMAND CODE CONNECT The function is used to Inventory only one tag in the effective 1 Inventory signal 6B 0x50 field and get their ID values If more than one tag in the effective field at the same time reader may be get nothing The function is used to according to the given conditions 2 Inventory multiple 6B 0x51 Inventory tags in the effective field and get their ID values The function is used to start to re
25. eadProtect The command is used to remove only one tag read protection in the effective field The tag must be having the same access password Only NXP s UCODE EPC G2X tags valid Command Data Len Adr Cmd CRC 16 Pwd 0x08 OxXX 0x0a 4Byte LSB MSB Parameter Connect Pwd Four bytes they are Access Password The most significant word of Access Password is first the most significant byte of word is first The first bit of 32 bit access password is left and the last bit of 32 bit access password is right Pwd must be right tag s Access Password Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x0a 0x00 LSB MSB Notes If a tag does not support the command is unlocked 8 2 11 Check ReadProtect The command is used to check only one tag in the effective field whether the tag is protected It can not check the tag whether the tag support protection setting Only NXP s UCODE EPC G2X tags valid Command Len Adr Cmd Data CRC 16 0x04 OxXX Ox0b LSB MSB Respond Len Adr reCmd Status Data CRC 16 0x06 OxXX OxOb 0x00 ReadPro LSB MSB Parameter Connect ReadPro Connect 0x00 Tag is protected 0x01 Tag is unprotected Notes If a tag does not support the command is unprotected 23 U9809 UHF RFID Reader User s Manual V1 2 8 2 12 EAS Alarm The function is
26. eader Return status 0x05 when Access the reader implements a 5 0xXX 0xXX 0x05 E LSB MSB Password command whit password error while the password is wrong U9809 UHF RFID Reader User s Manual V1 2 Return status 0x09 when the reader implement a Kill command while the OxXX 0x05 0x09 LSB MSB Kill Tag error kill password error or poor communication reader and tag Kill Password Return status Ox0a when OxXX 0x05 0x0a LSB MSB error can t be i the Kill Password is zero zero Tag Not Return status 0x0b when OxXX OxXX 0x0b LSB MSB Support the the G2 Tag dose not command supports the command Return status 0x0c when Use the the NXP UCODE EPC command G2X Tag is set read OxXX OxXX Ox0c LSB MSB Access i protection or EAS Alarm Password the access password is Can t be Zero Zero Tag is Return status OxOd when protected OxXX 0x0a 0x0d LSB MSB the NXP UCODE EPC cannot set 1t G2X Tag is protected again Return status 0x0e when Tag is the NXP UCODE EPC unprotected OxXX 0x0a 0x0e LSB MSB G2X Tag is unprotected or no need to the tag does not support reset 1t the command Return status 0x10 when There is some 3 the 6B Tag is written data OxXX 0x53 0x10 LSB MSB locked bytes while there are some write fail locked bytes write fail Return status Ox11 when OxXX 0x55 Ox11 LSB MSB cannot lock it the 6B Tag can t be locked Be
27. he decision of the EPC number EPC numbers in word units and must be an integer number of lengths High word first the high byte of each word first Requirement given here is a complete EPC number Mem One byte It specifies whether the Write accesses Password EPC TID or User memory 0x00 Password memory 0x01 EPC memory 0x02 TID memory 0x03 User memory Other values reserved Other value when error occurred WordPtr One byte It specifies the starting word address for the memory write For example WordPtr 00h specifies the first 16 bit memory word WordPtr 01h specifies the second 16 bit memory word etc Wdt Be written words The most significant byte of each word is first Wdt specifies the array of the word to be written For example WordPtr equal 0x02 then the first word in Data write in the address 0x02 of designated Mem the second word write in 0x03 etc Pwd Four bytes they are Access Password The most significant word of Access Password is first the most significant byte of word is first The first bit of 32 bit access password is left and the last bit of 32 bit access password is right Only done the memory set to lock and the Access Password is not zero it needs Pwd In other cases Pwd can be zero MaskAdr One byte it specifies the starting byte address for the memory mask For example MaskAdr 0x00 specifies the first EPC bytes MaskAdr 0x01 specifies the second EPC bytes etc MaskLen One byte it
28. n above 07h for an Interrogator to uniquely identify the custom commands and or optional features that a Tag supports User memory is optional This area of different manufacturers is different There is no user area in G2 tag of Inpinj Company There are 28 words in Philips Company Can write protect in four distinct banks It means this memory is never writeable or not writeable under the non safe state only password area can set unreadable B 18000 6B TAG 6B tag has a memory space the minimum 8 bytes byte 0 7 is UID of the tag and can t be rewritten Following byte all can be rewritten can be locked too but once locking can t rewrite and unblock again 13 U9809 UHF RFID Reader User s Manual V1 2 8 DETAILED DESCRIPTION OF OPERATION COMMAND 8 1 COMMAND OVERVIEV The reader supports three kinds of command one kind is the ISO IEC 18000 6 protocol command another kind is reader defined command and also one kind is the transparent command If the host input of the command is an unrecognized command such as the command does not support or CRC error in the command then the return value is as follows Len Adr reCmd Status CRC 16 0x05 OxXX 0x00 OxFE LSB MSB If the length of command operands doesn t conform to the command request the return value is as follows Len Adr reCmd Status CRC 16 0x05 OxXX OxXX OxFD LSB
29. n vacant Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x0e 0x00 LSB MSB 8 2 15 Inventory Single Command Len Adr Cmd Data CRC 16 0x04 OxXX OxOf PESE LSB MSB Respond Data Len Adr reCmd Status CRC 16 Num EPC ID OxXX OxXX Ox0f 0x01 0x01 EPC 1 LSB MSB Num The number of tag detected EPC ID Inventoried tag s EPC data EPC 1 is the first tag EPC Len EPC data The most significant word EPC C1 G2 data in word units of EPC is transmitted first and the most significant byte of word is transmitted first EPC Len is one byte 8 2 16 Block Write The command is used to write multiple words in a Tag s Reserved EPC TID or User memory Command Len Adr Cmd Data CRC 16 OxXX OxXX 0x10 LSB MSB Data as follows Data WNum ENum EPC Mem WordPtr Wdt Pwd MaskAdr MaskLen OxXX OxXX Variable OxXX OxXX Variable 4Byte OxXX OxXX 26 U9809 UHF RFID Reader User s Manual V1 2 Parameter Connect WNum One byte It specifies the number of 16 bit words to be written The value can not be 0 Otherwise it returns the parameters error message ENum EPC length in word units The length of EPC is less than 15 words can be 0 or 15 Otherwise it returns the parameters error message EPC Be operated tag s EPC number EPC length according to t
30. ned as follows BaudRate Bps 0 9600bps 1 19200 bps 2 38400 bps 3 43000 bps 4 56000 bps 5 57600 bps 6 115200 bps 33 U9809 UHF RFID Reader User s Manual V1 2 Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x28 0x00 LSB MSB Notes The response of the baud rate for the original baud rate and next command uses the new band rate 8 4 6 Set Power EEPROM and is nonvolatile after reader powered off The host sends this command to change the power of the reader The value is stored in the reader s inner Command Data Len Adr Cmd CRC 16 Pwr 0x05 OxXX Ox2F OxXX LSB MSB Parameter Connect Pwr New power The default value is 30 about 30dBm it range is 20 30 Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX Ox2F 0x00 LSB MSB 8 4 7 Acousto optic Control The host sends this command to control the LED lights flash and buzzer tweet Command Data Len Adr Cmd CRC 16 ActiveT SilentT Times 0x07 OxXX 0x33 OxXX OxXX OxXX LSB MSB Parameter Connect ActiveT LED flash and buzzer tweet time ActiveT 50ms the default value is 0 0 lt ActiveT lt 255 SilentT The LED and the buzzer silent time SilentT 50ms the default value is0 0 lt SilentT lt 255 Times LED flash and buzzer tweet times 0 lt Times lt 255 th
31. ns at MaskAdr and ends MaskLen bytes later MaskAdr MaskLen must be less the length of ECP number Otherwise it returns the parameters error message U9809 UHF RFID Reader User s Manual V1 2 Notes That a tag compares against complete EPC number when the MaskAdr and MaskLen vacant Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x05 0x00 LSB MSB 8 2 6 Lock The Lock command Lock reversibly or permanently locks a password or an entire EPC TID or User memory bank in a readable writeable or unreadable unwriteable state Once tag s password memory establishes to forever may be readable and writable or unreadable and unwriteable then later cannot change its read write protection again Tag s EPC memory TID memory or user memory if establishes to forever may be writeable or unwriteable then later cannot change its read write protection again If sends the command to want forcefully to change the above several states then the tag will return to the error code When the tag s memory established in a readable writeable state the command must give the Access Password so tag s Access Password is not zero Command Len Adr Cmd Data CRC 16 OxXX OxXX 0x06 LSB MSB Data as follows Data ENum EPC Select SetProtect Pwd MaskAdr MaskLen OxXX Variable OxXX OxXX 4Byte OxXX OxXX Parameter Connect ENum EPC length in word
32. otes That a tag compares against complete EPC number when the MaskAdr and MaskLen vacant Respond Len Adr reCmd Status Data CRC 16 0x05 OxXX 0x07 0x00 LSB MSB 8 2 8 ReadProtect With EPC The command is used to set designated tag read protection After the tag protected it never process command Even if inventory tag reader can not get the EPC number The read protection can be removed by executing Reset ReadProtect Only NXP s UCODE EPC G2X tags valid Command Len Adr Cmd Data CRC 16 OxXX OxXX 0x08 LSB MSB 21 U9809 UHF RFID Reader User s Manual V1 2 Data as follows Data ENum EPC Pwd MaskAdr MaskLen OxXX Variable 4Byte OxXX OxXX Parameter Connect ENum EPC length in word units The length of EPC is less than 15 words can be 0 or 15 Otherwise it returns the parameters error message EPC Be operated tag s EPC number EPC length according to the decision of the EPC number EPC numbers in word units and must be an integer number of lengths High word first the high byte of each word first Requirement given here is a complete EPC number Pwd Four bytes they are Access Password The most significant word of Access Password is first the most significant byte of word is first The first bit of 32 bit access password is left and the last bit of 32 bit access password is right Tags Access Password can not
33. r Ox2F The function is used to set the power of reader 7 Acousto optic Control 0x33 Acousto optic Control S LIST OF COMMAND EXECUTION RESULT STATUS U9809 UHF RFID Reader User s Manual V1 2 RESPONSE DATA BLOCK STATES CONNECT Len Adr reCmd Status Data CRC16 Length Return status 0x00 to host of after command is executed OxXX OxXX 0x00 LSB MSB Success Data successfully Data block 5 contains result data Return status 0x01 to host when the reader executes Length an Inventory command and Return before of gets some complete G2 OxXX 0x01 OxOl LSB MSB Inventory Data tags EPC before finished 5 user defined Inventory ScanTime finished Return status 0x02 when the reader executes an Length the Inventory command and of Inventory sca 0xXX 0x01 0x02 LSB MSB does not get all G2 tags Data n time EPC before user defined 45 overflow Inventory ScanTime overflows Return status 0x03 when the reader executes an Length f Inventory command and o OxXX 0x01 0x03 J LSB MSB More Data gets many G2 tags EPC Data n Data can not be completed within in a message and then send in multiple Return status 0x04 when Length the reader executes an Reader of Inventory command and OxXX 0x01 0x04 LSB MSB module flash Data j gets G2 tags EPC too is Full 5 much more than the storage capacity of r
34. ried tag s EPC The reader does not get all G2 tags EPC before user defined Inventory ScanTime ie overflows Command force quit and returns inventoried tags EPC 0x03 The reader executes an Inventory command and gets many G2 tags EPC Data can not be completed within in a message and then send in multiple 0x04 The reader executes an Inventory command and gets G2 tags EPC too much more than the storage capacity of reader and returns inventoried tags EPC Num The number of tag detected EPC ID Inventoried tag s EPC data EPC 1 is the first tag EPC Len EPC data etc The most significant word EPC C1 G2 data in word units of EPC is transmitted first and the most significant byte of word is transmitted first EPC Len is one byte 8 2 2 Read Data The command is used to read part or all of a Tag s Password EPC TID or User memory To the word as a unit start to read data from the designated address Command Len Adr Cmd Data CRC 16 OxXX OxXX 0x02 LSB MSB Data as follows Data ENum EPC Mem WordPtr Num Pwd MaskAdr MaskLen OxXX Variable OxXX OxXX OxXX 4Byte OxXX OxXX Parameter Connect ENum EPC length in word units The length of EPC is less than 15 words can be 0 or 15 Otherwise it returns the parameters error message EPC Be operated tag s EPC number EPC length according to the decision of the
35. s transmitted first and the least significant byte of command data sequence is transmitted first 2 PROTOCOL DESCRIPTION A communication procedure is sponsored by the host sending commands and data to the reader and the reader returns the result status and data to host after command execution Reader receives a command executes a command only the reader complete the implementation of a command to receive the next command During the implementation of the command in the reader if sending commands to the reader the command will be lost The following table shows the process of the host computer command HOST DIRECTION READER Command Data Block The interval between two consecutive bytes in the command data block should be less than 15ms During command data block sending synchronization will lost if the host receives any data from the reader and the host should stop command sending and restart the communication after 15ms The reader completes command execution in inventory ScanTime not including host sending data time except inventory command after receiving host command and returns the results During the period it doesn t process any host data The feedback of command execution results is as follows READER DIRECTION HOST Command Data Block The interval between two consecutive bytes in the response data block should be less than 15ms U9809 UHF RFID Reader User s Manual V1 2 3
36. sccssscssssscssssessccsesesscssesssessseseneseneseneees 28 8 3 3 Read BIFICR OL 29 8 3 4 Write Data OB ED 29 323 5 CHECK Lock OB sssusccusisuscdescdesccusccdscciscenscciscduscdussensecisdensectsoecsecssddesedsssevvecksdnvecusecweesussdnvedussevsecussesees 30 nodu 30 8 4 READ DEFINED COMMAND ecce eeee eee tn etnia tasto stas tatis stata S0 VoRa SSSR ooon Stoos sesta stone 31 8 4 1 Get Reader Information 4 eerie eee eese eese eese tenetis etse tanen etse tasses etse tasses etse tse ts stas tnato 31 8 4 2 Set REGION mL osen 32 8 4 3 S t Addres S ETT n a arene RuueauseSiSsedcosdsesbdedisecsdvaudbsscsddecdudeasbsdceseiecscesseas 32 8 4 4 Set Scan Time siessecassenseecsseasecassensoadsseasosassensedsseasoaasseasoadsseasoanssedsoaiseedbeaussedsoasssessoanssedseassoessesasseasods 33 4 5 Set Band Rate T 33 8 4 0 Set POW CN ioter Ear EEAS KEENE QUA EEDE NSAN 34 8 4 7 Acousto optic eniin oL M 34 U9809 UHF RFID Reader User s Manual V1 2 1 COMMUNICATION INTERFACE SPECIFICATION The reader communicates with host MCU MPU Controller using serial communication interface RS232 or RS485 and complete corresponding operation according to the host command The communication parameter is 57600bps 1 start bit 8 data bits 1 stop bit without parity check bit In the process of serial communication the least significant bit of one byte i
37. st the high byte of each word first 16 U9809 UHF RFID Reader User s Manual V1 2 Requirement given here is a complete EPC number Mem One byte It specifies whether the Write accesses Password EPC TID or User memory 0x00 Password memory 0x01 EPC memory 0x02 TID memory 0x03 User memory Other values reserved Other value when error occurred WordPtr One byte It specifies the starting word address for the memory write For example WordPtr 00h specifies the first 16 bit memory word WordPtr 01h specifies the second 16 bit memory word etc Wat Be written words The most significant byte of each word is first Wdt specifies the array of the word to be written For example WordPtr equal 0x02 then the first word in Data write in the address 0x02 of designated Mem the second word write in 0x03 etc Pwd Four bytes they are Access Password The most significant word of Access Password is first the most significant byte of word is first The first bit of 32 bit access password is left and the last bit of 32 bit access password is right Only done the memory set to lock and the Access Password is not zero it needs Pwd In other cases Pwd can be zero MaskAdr One byte it specifies the starting byte address for the memory mask For example MaskAdr 0x00 specifies the first EPC bytes MaskAdr 0x01 specifies the second EPC bytes etc MaskLen One byte it is the mask length That a Tag compares against the memory
38. therwise it returns the parameters error message EPC Be operated tag s EPC number EPC length according to the decision of the EPC number EPC numbers in word units and must be an integer number of lengths High word first the high byte of each word first Requirement given here is a complete EPC number Pwd Four bytes they are Access Password The most significant word of Access Password is first the most significant byte of word is first The first bit of 32 bit access password is left and the last bit of 32 bit access password is right Pwd must be right tag s Access Password WrdPointer Each EEPROM row can be addressed by either of the two related WordPointers Either of two WordPointers can address one single User Memory row WrdPointer User EEPROM row Oor 1 0 2 or 3 1 4or5 2 6 or 7 3 8 or 9 4 25 U9809 UHF RFID Reader User s Manual V1 2 10 or 11 12 or 13 MaskAdr One byte it specifies the starting byte address for the memory mask For example MaskAdr 0x00 specifies the first EPC bytes MaskAdr 0x01 specifies the second EPC bytes etc MaskLen One byte it is the mask length That a Tag compares against the memory location that begins at MaskAdr and ends MaskLen bytes later MaskAdr MaskLen must be less the length of ECP number Otherwise it returns the parameters error message Notes That a tag compares against complete EPC number when the MaskAdr and MaskLe
39. tion is used to write EPC value in a Tag s EPC memory Random write one tag in the effective field Kill Tag 0x05 The function is used to kill tag After the tag killed it never process command Lock 0x06 The function is used to set Password area as readable and writeable from any state readable and writeable from the secured state permanently readable and writeable never readable and writeable It used to set EPC TID or User as writeable from any state writeable from the secured state permanently writeable never writeable Block Erase 0x07 The function is used to erase multiple words in a Tag s Password EPC TID or User memory ReadProtect 0x08 The function is used to set designated tag read protection After the tag protected it never process command Even if inventory tag reader can not get the EPC number The read protection can be removed by executing Reset ReadProtect Only NXP s UCODE EPC G2X tags valid Read Protect without EPC 0x09 The function is used to random set one tag read protection in the effective field The tag must be having the same access password Only NXP s UCODE EPC G2X tags valid Reset ReadProtect 0x0a The function is used to remove only one tag read protection in the effective field The tag must be having the same access password Only NXP s UCODE EPC G2X tags valid Check ReadProtect OxOb The function is used to check only on
40. units The length of EPC is less than 15 words can be 0 or 15 Otherwise it returns the parameters error message EPC Be operated tag s EPC number EPC length according to the decision of the EPC number EPC numbers in word units and must be an integer number of lengths High word first the high byte of each word first Requirement given here is a complete EPC number Select One byte defined as follows 0x00 Control Kill Password protection setting 0x01 Control Access password protection setting 0x02 Control EPC memory protection setting 0x03 Control TID memory protection setting 0x04 Control User memory protection setting Other value when error occurred SetProtect When Select is 0x00 or 0x01 SetProtect means as follows 19 U9809 UHF RFID Reader User s Manual V1 2 0x00 readable and writeable from any state 0x01 permanently readable and writeable 0x02 readable and writeable from the secured state 0x03 never readable and writeable When Select is 0x02 0x03 or 0x04 SetProtect means as follows 0x00 writeable from any state 0x01 permanently writeable 0x02 writeable from the secured state 0x03 never writeable Other value when error occurred Pwd Four bytes they are Access Password The most significant word of Access Password is first the most significant byte of word is first The first bit of 32 bit access password is left and the last bit of 32 bit access password is right Pwd must be right A
41. used to set or reset the EAS status bit of designated tag Only NXP s UCODE EPC G2X tags valid Command Len Adr Cmd Data CRC 16 OxXX OxXX 0x0c LSB MSB Data as follows Data ENum EPC Pwd EAS MaskAdr MaskLen OxXX Variable 4Byte OxXX OxXX OxXX Parameter Connect ENum EPC length in word units The length of EPC is less than 15 words can be 0 or 15 Otherwise it returns the parameters error message EPC Be operated tag s EPC number EPC length according to the decision of the EPC number EPC numbers in word units and must be an integer number of lengths High word first the high byte of each word first Requirement given here is a complete EPC number Pwd Four bytes they are Access Password The most significant word of Access Password is first the most significant byte of word is first The first bit of 32 bit access password is left and the last bit of 32 bit access password is right Tags Access Password can not be zero EAS One byte Bit0 0 means reset the EAS state Bit0 1 means set the EAS state Bitl Bit7 default 0 MaskAdr One byte it specifies the starting byte address for the memory mask For example MaskAdr 0x00 specifies the first EPC bytes MaskAdr 0x01 specifies the second EPC bytes etc MaskLen One byte it is the mask length That a Tag compares against the memory location that begins at MaskAdr and ends MaskLen bytes later MaskA
42. ven here is a complete EPC number Mem One byte It specifies whether the Erase accesses Password EPC TID or User memory 0x00 Password memory 0x01 EPC memory 0x02 TID memory 0x03 User memory Other values reserved Other value when error occurred WordPtr One byte It specifies the starting word address for the memory block erase For example WordPtr 00h specifies the first 16 bit memory word WordPtr Olh specifies the second 16 bit memory word etc WordPtr must be bigger than 0x00 when it erases EPC memory Num One byte It specifies the number of 16 bit words to be erased If Num 0x00 it returns the parameters error message Pwd Four bytes they are Access Password The most significant word of Access Password is first the most significant byte of word is first The first bit of 32 bit access password is left and the last bit of 32 bit access password is right Only done the memory set to lock and the Access Password is not zero it needs Pwd In other cases Pwd can be zero MaskAdr One byte it specifies the starting byte address for the memory mask For example MaskAdr 0x00 specifies the first EPC bytes MaskAdr 0x01 specifies the second EPC bytes etc MaskLen One byte it is the mask length That a Tag compares against the memory location that begins at MaskAdr and ends MaskLen bytes later MaskAdr MaskLen must be less the length of ECP number Otherwise it returns the parameters error message N
43. y location that begins at MaskAdr and ends MaskLen bytes later MaskAdr MaskLen must be less the length of ECP number Otherwise it returns the parameters error message Notes That a tag compares against complete EPC number when the MaskAdr and MaskLen vacant Respond Len Adr reCmd Status Data CRC 16 OxXX OxXX 0x02 0x00 Wordl Word2 LSB MSB Parameter Connect Word1 Word2 In word units one word is two bytes High byte is first Wordl is the word which reads from the start address Word2 is the word which reads from the second address etc 8 2 3 Write Data The command is used to write several words in a Tag s Reserved EPC TID or User memory Command Len Adr Cmd Data CRC 16 OxXX OxXX 0x03 LSB MSB Data as follows Data WNum ENum EPC Mem WordPtr Wdt Pwd MaskAdr MaskLen OxXX OxXX Variable OxXX OxXX Variable 4Byte OxXX OxXX Parameter Connect WNum One byte It specifies the number of 16 bit words to be written The value can not be 0 Otherwise it returns the parameters error message ENum EPC length in word units The length of EPC is less than 15 words can be 0 or 15 Otherwise it returns the parameters error message EPC Be operated tag s EPC number EPC length according to the decision of the EPC number EPC numbers in word units and must be an integer number of lengths High word fir
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