Balluff LRP2000 Pass Through System User Manual testcov
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Contents
- 1. Manual Part1
- 2. Manual Part2
Manual Part2
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| Document ID | 341104 |
| Application ID | 133k16FrUr97KtAQhp/0Fw== |
| Document Description | Manual Part2 |
| Short Term Confidential | No |
| Permanent Confidential | No |
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| Document Type | User Manual |
| Display Format | Adobe Acrobat PDF - pdf |
| Filesize | 132.84kB (1660557 bits) |
| Date Submitted | 2003-07-18 00:00:00 |
| Date Available | 2003-07-18 00:00:00 |
| Creation Date | 2003-06-12 16:55:49 |
| Producing Software | Acrobat Distiller 5.0.5 (Windows) |
| Document Lastmod | 2003-06-12 16:56:58 |
| Document Title | testcov.fm |
| Document Creator | FrameMaker 7.0 |
| Document Author: | balsco |
RFID Interface ******************************************************************************* ABxS Command 8BH: Write Family Code All DESCRIPTION This command can be used to write the Family Code of all tags in the field. It can also be used to selectively rewrite the family codes of tags with Family Codes already set to a particular value. The command is formatted as shown below. Field Remarks Command Command number in hex preceded by AAH Current Family Code Current Tag Family Code Reserved 00H Timeout Timeout value given in 1 ms units (001EH - FFFEH) New Family Code The value which will be written to the FamilyCodes of all the addressed tags Message Terminator FFFFH Example This example will change the Family code depending on the current value of the family code. Two tags are found with Family Code 02H and they are changed to 03H. Command from hoast Response from controller MSB LSB Remarks MSB LSB Remarks AAH 8BH Perform Command 8BH AAH 8BH Command Echo 02H 00H Family ID/ Reserved 02H 00H Ntags/Status 07H D0H 2 second Timeout FFH FFH Message Terminator 00H 03H FFH FFH Message Terminator new family code LRP2000 Long Range Passice Reader/Writer 79 RFID Interface ******************************************************************************* ABxS Command 8CH: Lock Family Code All DESCRIPTION This command locks the family codes of tags in the field. Once locked, the Family Codes cannot be changed or unlocked. DISCUSSION The command must pass a family code to select the tags whose family code will be locked. The controller will return a response when the timeout period expires. The parameter of the response in the number of tags written. The command is formatted as shown below. Field Remarks Command Command number in hex preceded by AAH Family Code Family Code, 00H = all tags Reserved 00H Timeout Timeout value given in 1 ms units (001EH - FFFEH) Message Terminator FFFFH Example This example will lock the Family Code on all tags with the Family Code of 02H. Two tags are found and locked. Command from host Response from controller MSB LSB Remarks MSB LSB Remarks AAH 8CH Perform Command 8CH AAH 8BH Command Echo 02H 00H Family ID/ Reserved 02H 00H Ntags/Status 07H D0H 2 second Timeout FFH FFH Message Terminator 80 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Command from host Response from controller MSB LSB Remarks MSB FFH LSB Remarks FFH Message Terminator ******************************************************************************* ABxS Command 8DH: Start/Stop Continuous Read All DESCRIPTION Starts and stops Continuous Read All mode for multiple tags. DISCUSSION The Start/Stop Continuous Read All mode is set by the length byte. To start Continuous Read All mode send the command with valid, nonzero value for the length of the read . Stop the mode by sending the command with a read length of 0. While in this mode, any other command can be issued and it will be handled properly. After processing the new command, the controller will resume the Continuous Read All mode. The command has a parameter, tag repeat count, that can prevent multiple reads of the same tag. A tag is not read a second time until a specified number of tags have been read since it was last read. Allowed values are from 0 to 255 (FFH), where 0 means the tag can be re-read anytime. When Continuous Read All mode is interrupted with other commands, the tag repeat count is saved during execution of the other commands such that all tags will respond to the interrupting command. When the controller resumes continuous reading, the tag repeat count will be restored. The controller will respond with an acknowledge packet followed by data packets for each tag read. CONFIG LED blinks after each packet transmission. Field Remarks Command Command number in hex preceded by AAH Family ID Tag Family ID - 00H = all tags Reserved 00H Start Address Tag address for the start of the read Read Length nonzero = start, 0000H = stop LRP2000 Long Range Passice Reader/Writer 81 RFID Interface Field Remarks Tag Delay Number of tag that must be read before the same tag will be read again(0-255) Message Terminator FFFFH Example Reads 4 bytes of data from the tag starting at address 0001H. TheFamily ID byte is set to zero so all tags will be read. The Tag Repeat Count is set to 20 (14H). Three tags respond with read data. Command from host Response from controller MSB LSB Remarks MSB LSB Remarks AAH 8DH Perform Command 8D AAH 8DH Command Echo 00H 00H Tag Family 00/Reserved FFH FFH Message Terminator 00H 01H Start Address 00H 04H Read Length 00H 14H Tag Delay FFH FFH Message Terminator After the controller sends the acknowledgment, it will send the read data from the 3 tags. Data response from controller 82 MSB LSB Remarks AAH 8DH Command Echo/ Tag 1 00H 30H Data byte 1/Tag 1 00H 31H Data byte 2/Tag 1 00H 32H Data byte 3/Tag 1 00H 33H Data byte 4/Tag 1 FFH FFH Terminator/ Tag 1 AAH 8DH Command Echo/ Tag 2 00H 40H Data byte 1/Tag 2 00H 41H Data byte 2/Tag 2 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface MSB LSB Remarks 00H 42H Data byte 3/Tag 2 00H 43H Data byte 4/Tag 2 FFH FFH Terminator/ Tag 2 AAH 8DH Command Echo/ Tag 3 00H 34H Data byte 1/Tag 3 00H 35H Data byte 2/Tag 3 00H 36H Data byte 3/Tag 3 ******************************************************************************* ABxS Command 8EH: Memory Lock All DESCRIPTION This command locks contiguous blocks of read-write memory. Once Bytes are locked, they cannot be written to, nor can they be unlocked. DISCUSSION The memory can be locked only in contiguous blocks. The command passes one parameter for the first block and another parameter for the number of blocks to be locked. This is one of only two ABx commands which address the memory of the tag using these parameters. The block structure of the tags is governed by the ISO15693 specification. ABx command 15H can be used to obtain the memory organization for a particular tag. Attempting to write to locked Bytes will return a Write Security Error. The command is formatted as shown below. Field Remarks Command Command number in hex preceded by AAH Family Code Tag Family ID - 00H = all tags Reserved 00H Timeout Timeout value given in 1 ms units (001EH - FFFEH) First Block First block of memory to lock Number of blocks Number of contiguous blocks of memory to lock LRP2000 Long Range Passice Reader/Writer 83 RFID Interface Field Remarks Message Terminator FFFFH Example This example will lock blocks 0-8 on all tags in range with the Family ID of 02H. Two tags are found and locked. Command from host Response from controller MSB LSB Remarks MSB LSB Remarks AAH 8EH Perform Command 8E AAH 8EH Command Echo 02H 00H Family ID/ Reserved 02H 08H Ntag/Status 07H D0H 2 second timeout FFH FFH Message Terminator 00H 08H FFH FFH Message Terminator 84 Lock Configuration LRP820S-Series Long-Range Passive Reader/Writers RFID Interface ******************************************************************************* ABxS Command 94H: SN Fill DESCRIPTION Fills only the RFID tag specified by serial number with a one byte value over multiple contiguous addresses. DISCUSSION This command is commonly used to clear an RFID tag's memory. It writes a one byte value repetitively across a specified range of tag addresses. Only the tag with the specified serial number will be affected by this command. The controller will return a response after the successful fill operation or when the timeout expires. The fill function requires a Family ID and a Serial Number, one data value byte, a starting address, and a fill length. It fills the specified tag with the data value byte, starting at the specified start address for the specified number of consecutive bytes. When Fill Length is set to 0, the controller will write fill data from the start address to the end of the tag's memory. The timeout value is given in 1 msec increments and can have a value of 001EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return a syntax error. It returns a response when done or when the timeout expires. Field Remarks Command Command number in hex preceded by AAH Family Code Tag Family ID - 00H = all tags Reserved 00H Start Address The tag address where the fill will start LRP2000 Long Range Passice Reader/Writer 85 RFID Interface Field Remarks Fill Length The number of tag addresses to be filled Timeout Timeout value given in 1 ms units (001EH - FFFEH) Tag Serial Number The 8-byte serial number Data Value Byte The byte used to fill Message Terminator FFFFH A response to a successful command will follow this form. Field Remarks Command Echo Command number in hex preceded by AAH Number of Tags filled 0 = tag not found, 1 = tag filled Command Status One byte Error status Message Terminator FFFFH Example Writes 'A' (41H) to a single tag, starting at tag address 0005H for the following next consecutive 40 bytes. The Family Code is set to 00H. A timeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for the completion of the command. Command from host Response from controller MSB LSB Remarks MSB LSB Remarks AAH 94H Perform Command 94 AAH 94H Command Echo 00H 00H Family ID/ Reserved 01H 00H Ntag/Status 00H 05H Start Address FFH FFH Message Terminator 00H 28H Fill Length 07H D0H Timeout 00H 01H SN byte 0 00H ACH SN byte 1 00H 42H SN byte 2 86 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Command from host Response from controller MSB LSB Remarks 00H D0H SN byte 3 00H 27H SN byte 4 00H 1CH SN byte 00H 65H SN byte 00H 33H SN byte 00H 41H Fill byte FFH FFH MSB LSB Remarks Message Terminator ******************************************************************************* ABxS Command 95H: SN Block Read DESCRIPTION Read a block of data from a specified RFID tag. DISCUSSION This command is used to read segments of data from contiguous areas of tag memory. It is capable of handling up to 48 bytes of data transferred to the host with one command if there is no tag Family ID. The timeout value is given in 1 msec increments and can have a value of 001EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return a syntax error. The SN Block Read consists of a serial number, a start address and length, followed by a timeout value. The 8-byte serial number of the target tag is specified. If the read length exceeds the last tag address, the controller will return error message in the status byte. It returns a response when done or when the timeout expires. The data read from the tag is returned in the LSB of the register, and the MSB is always 00H. A special error packet (AAH FFH) is sent if the timeout expires. Field Remarks Command Command number in hex preceded by AAH Tag Family Tag Family ID - 00H = all tags LRP2000 Long Range Passice Reader/Writer 87 RFID Interface Field Remarks Reserved 00H Start Address The tag address where the read will start Read Length The numbers of tag addresses to be read Timeout Timeout value given in 1 ms units (001EH - FFFEH) Tag Serial Number 8-byte tag serial number Message Terminator FFFFH Example Reads 4 bytes of data from the tag specified by serial number starting at address 0001H. A timeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for the completion of the SN Block Read. The Family ID byte is set to zero. Command from host Response from controller MSB LSB Remarks MSB LSB Remarks AAH 95H Perform Command 95 AAH 95H Command Echo 00H 00H Tag Family 00/ Reserved 00H 30H Data byte 1 00H 01H Start Address 00H 31H Data byte 2 00H 04H Read Length 00H 32H Data byte 3 07H D0H Timeout 00H 33H Data byte 4 00H ABH SN byte 0 01H 00H Ntag/Status 00H 02H FFH FFH Message Terminator 00H F3H SN byte 2 00H 55H 00H C5H SN byte 4 00H 2DH SN byte 5 00H 41H 00H A0H SN byte 7 88 SN byte 1 SN byte 3 SN byte 6 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Command from host Response from controller MSB LSB Remarks MSB FFH LSB Remarks FFH Message Terminator ******************************************************************************* ABxS Command 96 (96H): SN Block Write DESCRIPTION Write a block of data to a single RFID tag specified by its serial number. DISCUSSION This command is used to write segments of data to contiguous areas of tag memory. It is capable of transferring up to 1 kByte of data transferred from the host to the controller in a single command. The timeout value is given in 1 msec increments and can have a value of 001EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return a syntax error. The SN BlockWrite consists of a Family ID, Serial Number and start address followed by the data stream to be written to the RFID tag. If the write range exceeds the last tag address, the controller will return a syntax error, 21H. It returns a response when done or when the timeout expires. The data to be written to the tag is contained in the LSB of the register, and the MSB is always 00H. LRP2000 Long Range Passice Reader/Writer 89 RFID Interface Field Remarks Command Command number in hex preceded by AAH Family ID Tag Family ID - 00H = all tags Reserved 00H Start Address The tag address where the write will start Number of Bytes The number of tag addresses to be written to Timeout Timeout value given in 1 ms units (001EH - FFFEH) Tag Serial Number 8-Byte tag serial number Write Data The data to be written (1 Byte to 1kByte) Message Terminator FFFFH Example Writes 4 bytes of data, starting at address 0001H. A timeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for the completion of the Block Write. The Family ID Code is set to 00H. Command from host Response from controller MSB LSB Remarks MSB LSB Remarks AAH 96H Perform Command 96 AAH 96H Command Echo 02H 00H Tag Family 02/ reserved 01H 00H Ntags/Status 00H 01H Start Address FFH FFH Message Terminator 00H 04H Write Length 07H D0H Timeout 00H A4H SN byte 0 00H 6CH SN byte 1 00H 18H SN byte 2 00H 92H SN byte 3 00H 2DH SN byte 4 90 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Command from host Response from controller MSB LSB Remarks MSB 00H 34H 00H DEH SN byte 6 00H 20H SN byte 7 00H 40H Data byte 1 00H 41H Data byte 2 00H 42H Data byte 3 00H 43H Data byte 4 FFH FFH Message Terminator LSB Remarks SN byte 5 ******************************************************************************* ABxS Command 10H: Set Output DESCRIPTION Set the states of the output lines and output LEDs "A" through "D." DISCUSSION This command will set the state of the digital output lines using a oneByte parameter, Output Status. The least significant nibble of the Output Status Byte will determine the status of the outputs. The least significant bit of this nibble corresponds to Output A. The most significant bit of this nibble corresponds to Output D. The most significate nibble of the Output Status Byte is reserved and should be set to 0H. An output bit set to one will turn the corresponding LED on and close the electronic switch of the output, allowing current to flow through the output circuit. An output bit reset to zero will turn the corresponding LED off and open the electronic switch in the output LRP2000 Long Range Passice Reader/Writer 91 RFID Interface circuit. The following chart shows the hex values for all combinations of Output Status Bytes. To reset all output bits, issue the command with 00H for the Output Status Byte. 92 LSB Bit 3 LSB Bit 2 LSB Bit 1 LSB Bit 0 Output D Output C Output B Output A MSB LSB Remarks 00H 00H Reset A, B, C, 0 00H 01H Set Output A - 0 Reset B, C, D 00H 02H Set Output B - 0 Reset A, C, D 00H 03H Set Output A, 0 B - Reset C, D 00H 04H Set Output C - 0 Reset A, B, D 00H 05H Set Output A, 0 C - Reset B, D 00H 06H Set Output B, 0 C - Reset A, D 00H 07H Set Output A, 0 B, C - Reset D 00H 08H Set Output D - 1 Reset A, B, C 00H 09H Set Output A, 1 D - Reset B, C 00H 0AH Set Output B, 1 D - Reset A, C 00H 0BH Set Output A, 1 B, D - Reset C 00H 0CH Set Output C, 1 D - Reset A, B 00H 0DH Set Output A, 1 C, D - Reset B 00H 0EH Set Output B, C, D - Reset A 00H 0FH Set Output A, B, C, D Field Remarks Command Command number in hex preceded by AAH Output Pattern Hex value for the bit output settings LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Field Remarks Message Terminator FFFFH Example The following example sets Output B only and resets A, C, and D. Command from host Response from controller MSB LSB Remarks MSB LSB Remarks AAH 10H Perform Command 10 AAH 10H Command echo 00H 02H Set Output B FFH FFH Message Terminator FFH FFH Message Terminator ******************************************************************************* ABxS Command 11H: Input Status DESCRIPTION Returns the status of User Inputs. DISCUSSION This command will interrogate the state of the User Input lines and return a one-Byte parameter, Input Status. The least significant nibble of the Input Status Byte is determined by the status of the outputs. The least significant bit of this nibble corresponds to Input A. The most significant bit of this nibble corresponds to Input D. The most significate nibble of the Input Status Byte will be set to 0H. A closed circuit in one of the User Inputs will set the corresponding User Input bit to one, turning the corresponding LED on. An open circuit in one of LRP2000 Long Range Passice Reader/Writer 93 RFID Interface the User Inputs will set the corresponding User Input bit to zero, turning off the corresponding LED. The following chart shows all of the valid hex values for the Input Status bytes. LSB Bit 3 LSB Bit 2 Input D Input C LSB Bit 1 LSB Bit 0 Input B Input A 01H Input A, ON - B, C, 0 D, OFF 00H 02H Input B, ON - A, C, 0 D, OFF 00H 03H Input A, B, ON - C, 0 D, OFF 00H 04H Input C, ON - A, B, 0 D, OFF 00H 05H Input A, C, ON - B, 0 D, OFF 00H 06H Input B, C, ON - A, 0 D, OFF 00H 07H Input A, B, C, ON - 0 D, OFF 00H 08H Input D, ON - A, B, 1 C, OFF 00H 09H Input A, D, ON - B, 1 C, OFF 00H 0AH Input B, D, ON - A, 1 C, OFF 00H 0BH Input A, B, D, ON - 1 C, OFF 00H 0CH Input C, D, ON - A, 1 B, OFF 00H 0DH Input A, C, D, ON - 1 B, OFF 00H 0EH Input B, C, D, ON - 1 A, OFF 00H 0FH Input A, B, C, D, ON MSB LSB Remarks 00H 00H Inputs A, B, C, D, OFF 00H 94 Field Remarks Command Command number in hex preceded by AAH Message Terminator FFFFH LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Example The following example shows only Input B is ON. Command from host Response from controller MSB LSB Remarks MSB LSB Remarks AAH 11H AAH 11H Command echo FFH FFH Message Terminator 00H 02H Input B ON FFH FFH Message Terminator 6.4 Perform Command 11 Abx Fast Protocol The ABx Fast protocol differs from the Abx Standard Protocol in that the atomic data element is a Byte instead of a 16-bit word. ABx Fast commands and responses also contain a two-Byte word to indicate the size of the packet being sent. ABx Fast also supports the use of a one-Byte checksum. Packet Size The ABx Fast protocol requires that the size of the packet be included following the terminator in every packet. All parameters and data between the packet size Byte and the checksum (if used) or terminator Bytes (if not using the checksum) must be accounted for in the packet size word. The packet size will be the same with, or without, a checksum. Checksum The optional checksum must be enabled from the operating mode menu to be available. The checksum is calculated by adding all the Byte values in the packet (less the values in the header, checksum if present, and terminator), discarding Byte overflow and subtracting the Byte sum from FFH. Thus, when the packet length through the checksum are added as Byte values, the sum will be FFH. LRP2000 Long Range Passice Reader/Writer 95 RFID Interface Example The following is a typical command using a checksum. Field Contents Header 0202H Command Size 0003H Command Code 01H Timeout 07D0H Checksum 24H Terminator 03H The summed values begin with the Command Size and end with the timeout value. That sum, less overflow, is subtracted from FFH for the checksum value. Thus: 00H + 03H + 01H + 07H + D0H = DBH FFH - DBH = 24H Sum these values to calculate the checksum ABx Fast Single-tag Command Structure: 96 Field Number of Bytes Content Header 0202H Command Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. Command Command Code Byte Addresses The first two Bytes give the start address. The second two Bytes give the length of the address range. Not used on 07H, 08H, 14H, 15H, 16H Block Addresses The first Byte gives the address of the first block. The second Byte gives the number of blocks to be interrogated. Only used with command 14H. Timeout 0001H to FFFEH milliseconds Data varies command data Checksum Optional Checksum LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Field Number of Bytes Content Terminator 03H ABx Fast Multi-tag Command structure Field Number of Bytes Content Header 0202H Command Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. Command Command Code Family code 00H to address all tags in field Reserved Reserved for future use, set to 00H Address The first two Bytes give the start address. The second two Bytes give the length of the address range Not used on 87H, 88H, 8EH, 8BH, 8CH Block Addresses 2 The first Byte gives the address of the first block. The second Byte gives the number of blocks to be interrogated.Only used with command 14H Timeout 0001H to FFFEH milliseconds Data varies command data Checksum Optional Checksum Terminator 03H LRP2000 Long Range Passice Reader/Writer 97 RFID Interface ******************************************************************************* ABx Fast Command 04H: Fill Tag DESCRIPTION Fill an RFID tag with a one Byte value over multiple contiguous addresses. DISCUSSION This command is commonly used to clear an RFID tag's memory. It writes a one-Byte value repetitively across a specified range of tag addresses. The fill function requires one data value Byte, a starting address, and a fill length. It will fill the tag with the data value Byte, starting at the specified start address for the specified number of consecutive Bytes. When Fill Length is set to 0, the controller will write fill data from the start address to the end of the tag's memory. The timeout value is given in 1 msec increments and can have a value of 1EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return a syntax error. When the Fill Length extends beyond the last Byte in the tag, the controller will return error 21H 98 Field Content Header 0202H LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Field Content Command Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. 0008H for this command. Command 04H Start Address 2-Byte value for the starting tag address Number of Bytes 2-Byte value for the length of the fill in number of Bytes Timeout 2-Byte value for timeout in 1 ms units. (1EH FFFEH) Bytes Data value Byte 1 Byte value to be written to all the adddressed Bytes Checksum Optional Checksum Terminator 03H A response to a successful command will follow this form. Field Content Header 0202H Command Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. Command echo 04H Checksum Optional Checksum Terminator 03H Example Writes 'A' (41H) to the tag starting at address 0005H and continuing for the next consecutive 40 Bytes. A timeout of 2 seconds (07D0H =2000 x 1 msec increments) is set for the completion of the configuration. Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0008H Response Size 0001H LRP2000 Long Range Passice Reader/Writer 99 RFID Interface Command from host Response from controller Field Content Field Content Command Code 04H Command Echo 04H Start address 0005H Checksum FAH Block Size 0028H Terminators 03H Timeout, 2 seconds 07D0H Data Value Byte 41H Checksum AEH Terminators 03H ******************************************************************************* ABx Fast Command 05H: Block Read DESCRIPTION Reads a block of data from an RFID tag. DISCUSSION This command is used to read segments of data from contiguous areas of tag memory. It is capable of handling up to 1 kByte of data transferred to the host. The timeout value is given in 1 msec increments and can have a value of 1EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return error 21H, 100 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface syntax error. The Block Read consists of a start address and length, followed by a timeout value and a message terminator as shown below. Field Content Header 0202H Command Size Packet length in Bytes excluding the header, command Size, checksum and terminator Bytes. 0007H for this command Command 05H Start Address 2-Byte value for the starting tag address Number of Bytes 2-Byte value for the length of the read in number of Bytes Timeout 2-Byte value for timeout in 1 ms units. (1EH FFFEH) Checksum Optional Checksum Terminator 03H Example Reads 4 Bytes of data from the tag starting at address 0001H. A timeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for the completion of the Block Read. Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0007H Response Size 0005H Command Code 05H Command Echo 05H Start address 0001H Data fromaddress 0001H 05H Number of Bytes 0004H Data from address 0002H AAH LRP2000 Long Range Passice Reader/Writer 101 RFID Interface Command from host Response from controller Field Content Field Content Timeout,2 seconds 07D0H Data fromaddress 0003H E7H Checksum 17H Data from address 0004H 0AH Terminator 03H Checksum 55H Terminator 03H ******************************************************************************* ABx Fast Command 6 (06H): Block Write DESCRIPTION Write a block of data to an RFID tag. DISCUSSION The Block Write command is used to write segments of data to contiguous areas of tag memory. It is capable of addressing 1 kByte of the read/write address space of a tag in a single command. The BlockWrite command requires as parameters the start address, the 102 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface number of bytes to be written, and the data to be written to the RFID tag. If the write range exceeds the last tag address, the controller will return an invalid format error message (error code 21H). Field Content Header 0202H Packet Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. 0007H plus the number of data Bytes Command 06H Start Address 2-Byte value for the starting tag address Number of Bytes 2-Byte value for the number of Bytes that will be written Timeout 2-Byte value for timeout in 1 ms units. (1EH FFFEH) Data Data Bytes to be written Checksum Optional Checksum Terminator 03H Example Writes 4 Bytes of data to the tag starting at address 0000H. A timeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for the completion of the BlockWrite. Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 000BH Response Size 0001H Command Code 06H Command Echo LRP2000 Long Range Passice Reader/Writer 06H 103 RFID Interface Command from host Response from controller Field Content Field Content Start address 0000H Checksum F8H Number of Bytes 0004H Terminators 03H Timeout,2 seconds 07D0H Data to write to address 0000H 52H Data to write to address 0001H 46H Data to write to address 0002H 49H Data to write to address 0003H 44H Checksum EEH Terminators 03H ******************************************************************************* ABxFast Command 07H: Read Tag Serial Number DESCRIPTION This command retrieves the 8-Byte tag serial number. DISCUSSION 104 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Each ISO-15693 compliant tag has a unique (over 280 trillion possibilities) serial number. This number can not be changed and is not part of the available read/write address space of a tag. The presence of multiple tags in the field will not cause errors, the controller will simply return the serial number that it reads. This presents a potentially dangerous uncertainty in that there is no general way to predict which tag the controller will read first. Field Content Header 0202H Command Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. 0003H for this command Command 07H Timeout 2-Byte timeout value in 1 ms increments (1EH FFFEH) Checksum Optional Checksum Terminator 03H Example This example will wait until a tag is in range and then reads the 8-Byte serial number. In this example the serial number is F2720300000104E0. Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0003H Response Size 0009H LRP2000 Long Range Passice Reader/Writer 105 RFID Interface Command from host Response from controller Field Field Content Command Code 07H Content Command Echo 07H Timeout 07D0H First ID Byte F2H Checksum 1EH Second ID Byte 72H Terminators 03H Third ID Byte 03H Fourth ID Byte 00H Fifth ID Byte 00H Sixth ID Byte 01H Seventh ID Byte 004H Eighth ID Byte E0H Checksum A3H Terminators 03H ******************************************************************************* ABxFast Command 8 (08H): Tag Search DESCRIPTION Checks for an RFID tag in the controller field. 106 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface DISCUSSION This command will activate the controller to "look" for a tag in the RF field. If the controller finds a tag it will return a command echo to the host. If no tag is present it will return an error message. Even though this command is grouped with single-tag commands, the presence of multiple tags within range of the antenna will not cause errors. See Section 6.6 for information on the error messages. Field Content Header 0202H Command Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. 0003H for this command Command 08H Timeout 2-Byte value for the time in 1 ms units (1EH FFFEH) Checksum Optional Checksum Terminator 03H Example Checks for an RFID tag within range of the antenna. A timeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for the completion of the Tag Search. LRP2000 Long Range Passice Reader/Writer 107 RFID Interface Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0003H Response Size 0001H Command Code 08H Command Echo 08H Timeout 07D0H Checksum F6H Checksum 1DH Terminators 03H Terminators 03H Field Content ******************************************************************************* ABx Fast Command 0DH: Start/Stop Continuous Block Read 108 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface DESCRIPTION Sends block reads continuously to any tag in range of the antenna. When a tag enters the RF field, it is read and the data passed to the host computer. The controller continues to read the tag but will not send the same data to the host until the tag has been outside the RF field for a specified time period. This Delay Between Identical Decodes parameter prevents redundant data transmissions when the controller is in Continuous Block Read mode. DISCUSSION The Start/Stop Continuous Block Read command contains three parameters: Start Address, Number of Bytes and Delay Between Duplicate Decodes. The read length parameter switches the mode. Any valid, non-zero length will set the controller into Continuous Block Read mode. A read length value of 00H will stop the Continuous read. The Delay Between Identical Decodes parameter can have a value of 0 to 60 seconds. When the Delay Between Identical Decodes is set to 0, the controller will continuously read and transmit tag data to the host. This can flood the buffers and cause communication errors and data loss. If the controller receives other commands from the host, it will execute them and then resume Continuous Block Read mode. Issuing the command with the Number of Bytes set to 00H will stop the Continuous Block Read. The command is formatted as follows. Field Content Header 0202H Command Size Command length in Bytes excluding the header, command size, checksum and terminator Bytes. Command 0DH Start Address 2-Byte value for the start address in the tag Number of Bytes 2-Byte value of the number of bytes to be addressed. Delay Between Duplicate Decodes Delay value given in 1 second units Checksum Optional Checksum Terminator 03H This example places the controller in Continuous Block Read mode and reads 8 Bytes of data from the tag starting at address 0001H. A delay between identical reads of 2 seconds (0002H = 2 x 1 second increments) is set. LRP2000 Long Range Passice Reader/Writer 109 RFID Interface Command from Host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0006H Response Size 0001H Command Code 0DH Command Echo 0DH Start Address 0001H Checksum F1H Number of Bytes 0008H Terminator 03H Delay Between Duplicate Decodes 02H Checksum E1H ******************************************************************************* ABx Fast Command 14H: Get Block Status DESCRIPTION 110 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Returns the lock status of the specified blocks of data. DISCUSSION This command can be used to determine whether blocks of tag memory are locked; marked "read-only." The number of specified contiguous blocks are addressed from the specified first block. The response from the controller gives the status of each block through a one-Byte value. The value is 00H if the block is unlocked, 01H if locked. The size and organization of the blocks in a particular tag can be found through the use of command 15H, Get Label Information. Field Content Header 0202H Command Size Packet length in Bytes excluding the header, command this command size, checksum and terminator Bytes. 0005H for this command Command 14H First Block One-Byte address of the first block to be Interrogated. Number of blocks One-Byte Timeout 2-Byte value for timeout in 1 ms units. (1EH FFFEH) Checksum Optional Checksum Terminator 03H Example LRP2000 Long Range Passice Reader/Writer 111 RFID Interface Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0005H Response Size 0005H Command Code 14H Command Echo 14H First Block 00H status of block zero 00H Number of Blocks 04H status of block one 00H Timeout,2 seconds 07D0H status of block two 01H Checksum 0BH status of block three 00H Terminator 03H Checksum E5H Terminator 03H Interrogates the lock status of the first four blocks of the tag's memory for a timeout period of 2 seconds. ******************************************************************************* 112 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface ABx Fast Command 15H: Get Label Information DESCRIPTION: This command retrieves manufacturer's data and the Family Code from the tag. Field Content Header 0202H Command Size Packet length in Bytes excluding the header, command size, Checksum and terminator Bytes. 0003H for this command Command 15H Timeout 2-Byte value for timeout in 1 ms units. (1EH FFFEH) Checksum Optional Checksum Terminator 03H Example This command is issued to retrieve the family code from a tag. Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0003H Response Size 0007H Command Code 15H Command Echo 15H Timeout,2 seconds 07D0H Information Flags Byte 07H Checksum 10H Format Information 00H Terminator 03H Family Code 00H Block Size 04H Number of Blocks 1CH Checksum BCH Terminator 03H ******************************************************************************* LRP2000 Long Range Passice Reader/Writer 113 RFID Interface ABxFast Command 16H: Write Family Code DESCRIPTION Change the family code of an RFID tag. Field Content Header 0202H Packet Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. Always 0004H for this command. Command 16H Timeout 2-Byte value for timeout in 1 ms units. (1EH - FFFEH) Family Code The value to which the family code will be changed. Checksum Optional Checksum Terminator 03H Example Change the family code of the tag to 00H. Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0004H Response Size 0001H Command Code 16H Command Echo 16H Timeout 07D0H Checksum E8H Family Code 00H Terminator 03H Checksum FCH Terminator 03H ******************************************************************************* 114 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface ABxFast Command 17H: Lock Family Code DESCRIPTION: Locks the Family Code Byte to its current value so that it cannot be written. Once locked, the Family Code cannot be unlocked. Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0003H Response Size 0001H Command Code 17H Command Echo 17H Timeout, 2 seconds 07D0H Checksum E7H Checksum 0EH Terminator 03H Terminator 03H ******************************************************************************* LRP2000 Long Range Passice Reader/Writer 115 RFID Interface ABxF Command 82H: Read Data and SN All DESCRIPTION Read a block of data from all RFID tags-in-field or all those with the specified Family Code. Data will be returned with the serial number of the corresponding tag. DISCUSSION This command is used to read segments of data from contiguous areas of tag memory. It is capable of handling up to 1KByte of data transferred to the host with one command. The timeout value is given in 1 msec increments and can have a value of 1EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return a syntax error. The response to this command will contain the serial number of the responding tags preceding the data from those tags. The termination packet is transmitted when the timeout expires. Each packet will be sent to the host as soon as it is available. The returned serial numbers can be used to read from or to write to tags-in-field via the SN Block Read or Write commands. The SN Block Read All consists of a header, a family Code, a start address and length, followed by a timeout value and the message terminator, 03H, as shown below. A special termination packet is sent when the timeout expires. If the read range exceeds the last tag address, the controller will return an error message in the status Byte. The command is formatted as follows. Field Content Header 0202H Command Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. Command 82H Family Code Tag Family Code - 00H = all tags Reserved Ignored Byte, set to 00H Start Address 2-Byte value for the starting tag address Number of Bytes 2-Byte value for the number of Bytes to be read Timeout 2-Byte value for timeout in 1 ms units. (1EH FFFEH) Checksum Optional Checksum Terminator 03H Example 116 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Reads 4 Bytes of data from the tag starting at address 0001H. A timeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for the completion of the SN Block Read All. The Tag Family Byte is set to zero so all tags will be read. Three tags respond with data. Command from host Response from controller Field Content Field Content Header 0202H Header/tag 1 0202H Command Size 0009H Response Size 000DH Command Echo 82H Command Code 82H Family Code 03H SN Byte 1/tag 1 Reserved 00H SN Byte 2/ tag 1 72H Start address 0000H SN Byte 3/tag 1 03H Block Size 0004H SN Byte 4/tag 1 00H Timeout,2 seconds 07D0H SN Byte 5/tag 1 00H Checksum 96H SN Byte 6/tag 1 01H Terminators03H SN Byte 7/tag 1 04H SN Byte 8/tag 1 E0H A6H Data Byte 1/ tag 52H Data Byte 2/tag 46H Data Byte 3/tag 49H Data Byte 4/tag 44H Checksum 4BH Terminator 03H Header/tag 2 0202H Response Size 000DH Command Code 82H SN Byte 1/tag 2 F1H SN Byte 2/ tag 2 72H LRP2000 Long Range Passice Reader/Writer SN Byte 3/tag 2 03H SN Byte 4/tag 2 00H SN Byte 5/tag 2 00H SN Byte 6/tag 2 01H 117 RFID Interface Command from host Response from controller Field Content Field Content Header 0202H Header/tag 1 0202H SN Byte 7/tag 2 04H SN Byte 8/tag 2 E0H Data Byte 1/ tag 52H Data Byte 2/tag 46H Data Byte 3/tag 49H Data Byte 4/tag 44H Checksum 00H Terminator 03H Header/tag 3 0202H Response Size 000BH Command Echo 82H SN Byte 1/tag 3 71H SN Byte 2/ tag 3 72H SN Byte 3/tag 3 03H SN Byte 4/tag 3 00H SN Byte 5/tag 3 00H SN Byte 6/tag 3 01H SN Byte 7/tag 3 04H SN Byte 8/tag 3 E0H Data Byte 1/ tag 53H Data Byte 2/tag 48H Data Byte 3/tag 49H Data Byte 4/tag 54H Checksum 6FH Terminator 03H Header 0202H Response Size 0003H Command Echo FFH Number of tags 118 03H LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Command from host Response from controller Field Content Field Content Header 0202H Header/tag 1 0202H Status Byte 08H Checksum F2H Terminators 03H ******************************************************************************* LRP2000 Long Range Passice Reader/Writer 119 RFID Interface ABxF Command 83H: Start/Stop Continuous SN Read All DESCRIPTION Start and Stops continuous read all mode for multiple tags. It reads the Serial Number and tag data. While in this mode, any other command can be issued and it will be handled properly. After processing the interrupting command, the controller will resume the continuous read. Continuous SN Read All is started or stopped through a unique parameter, Start Continuous Read. This parameter is set to 01H to initiate the Continuous Read, and set to zero to stop it. The command uses the parameter Tag Repeat Count to limit multiple reads of the same tag. A tag is not read a second time until this specified number of tags have been read since it was last read. Allowed values are from 0 to 255 (FFH), where 0 means the tag can be reread anytime. When Start/Stop Continuous SN Read All is interrupted with another command, the repeat count is saved during execution of the other commands, allowing any tag to be addressed by the interrupting command. Upon completion of the interrupting command, the value of the Tag Repeat Count is restored. The Reader/Writer will respond after receipt of the command with an acknowledge packet. This will be followed by data packets for each tag read Field Content Header 0202H Command Size Command length in Bytes excluding the header, command size, checksum and terminator Bytes. Command 83H Family Code Tag Family Code - 00H = all tags Reserved Ignored Byte, set to 00H Start Address Two-Byte address for the first Byte to be read. Number of Bytes Number of bytes to be read from the tag. Tag Repeat Count Number of tags to be read before data will bereturned twice from any individual tag Start Continuous 01H to start Continuous Read Read 00H to stop Checksum Optional Checksum Message Terminator 03H 120 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Example Starts continuous read of three Bytes starting at address two, Repeat count of four, with the family code set to 00H, so that all tags in the field will respond. Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0008H Response Size 0001H Command Code 83H Command Echo 83H Family Code 00H Checksum 7BH Reserved 00H Terminator 03H Start Address 0002H Number of Bytes 0003H Repeat Count 04H Start 01H Checksum 6AH Terminator 03H After the controller sends the acknowledgement, it will send the data read from the tags in the field Response from controller Field Content Header 0202H Response Size 000BH Command Echo/Tag 1 83H Data from address 0002H AAH Data from address 0003H 21H Data from address 0004H 44H Checksum 62H Terminator 03H LRP2000 Long Range Passice Reader/Writer 121 RFID Interface Header 0202H Response Size 000BH Command Echo/Tag 2 83H Data from address 0002H AAH Data from address 0003H 21H Data from address 0004H 44H Checksum 62H Terminator 03H Header 0202H Response Size 000BH Command Echo/Tag 3 83H Data fromaddress 0002H AAH Data from address 0003H 21H Data from address 0004H 44H 122 Checksum 62H Terminator 03H LRP820S-Series Long-Range Passive Reader/Writers RFID Interface ******************************************************************************* ABxF Command 84H: Fill All DESCRIPTION Fill all RFID tags-in-field or all tags in the same family, with a one-Byte value over multiple contiguous addresses. DISCUSSION This command is commonly used to clear an RFID tag's memory. It writes a one Byte value repetitively across a specified range of tag addresses. All tags present in the antenna field with the specified Family Code will be affected by this command. The Fill All function requires one Data Value Byte, a Start Address, and a Number of Bytes to fill. It will fill the tag with the data value Byte, starting at the specified start address for the specified number of consecutive Bytes. The Fill Length must be set to a non-zero value. The timeout value is given in 1 msec increments and can have a value of 1EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return a syntax error. Field Content Header 0202H Packet Size Packet length in Bytes excluding the header, packet size, checksum and terminator Bytes. 0008H for this command Command 84H Family Code Tag Family Code - 00H = all tags Reserved Ignored, set to 00H Start Address 2-Byte value for the starting tag address Fill Length 2-Byte value for the length of the fill in number of Bytes (1-48) Timeout 2-Byte value for timeout in 1 ms units. (1EH - FFFEH) Data value Byte 1 Byte of fill Checksum Optional Checksum Terminator 03H LRP2000 Long Range Passice Reader/Writer 123 RFID Interface Example Writes 41H -- the ASCII character "A" -- to all tags with Family Code 03H, starting at address 0005H for the following next consecutive 40 Bytes. A timeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for the completion of the configuration. Four tags are found and filled successfully. Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 000AH Response Size 0003H Command Code 84H Command Echo 84H Family Code 03H Numbers of tags 04H Reserved 00H Status Byte 08H Start address 0005H Checksum 6CH Number of Bytes 0028H Terminator 03H Timeout,2 seconds 07D0H 124 Data Value Byte 41H Checksum 27H Terminator 03H LRP820S-Series Long-Range Passive Reader/Writers RFID Interface ******************************************************************************* ABxF Command 85H: Block Read All DESCRIPTION Read a block of data from all RFID tags-in-field or all those with the specified Family Code. DISCUSSION This command is used to read segments of data from contiguous areas of tag memory. The timeout value is given in 1 msec increments and can have a value of 1EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return a syntax error. The Block Read All consists of a Family Code, the reserved byte, a start address and length, followed by a timeout value and a message terminator as shown below. If the read length exceeds the last tag address, the controller will return an syntax error message (error code 21H). A special termination packet is sent when the timeout expires. A response is returned after successful completion of the operation or when the timeout expires. Field Content Header 0202H Command Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. Command 85H Family Code Tag Family Code - 00H = all tags Reserved Ignored, set to 00H Start Address 2-Byte value for the starting tag address Number of Bytes 2-Byte value for the number of bytes to be read Timeout 2-Byte value for timeout in 1 ms units. (1EH - FFFEH) Checksum Optional Checksum Terminator 03H LRP2000 Long Range Passice Reader/Writer 125 RFID Interface Example Reads 4 Bytes of data from tags with Family ID AAH, starting at address 0001H. A timeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for the completion of the Block Read All. The Family Code is set to zero so all tags will be read. 126 Command from host Response from controller Field Content ield Content Header 0202H Header 0202H Command Size 0009H Response Size 0003H Command Code 85H Command Echo/Tag 1 85H Family Code 00H Data from address 0001H 05H Reserved 00H Data from address 0002H AAH Start address 0001H Checksum C8H Length of read 0002H Terminator 03H Timeout, 2 seconds 07D0H Header 0202H Checksum EBH Response Size 0003H Terminator 03H Command Echo/Tag 2 85H Data from address 0001H 05H Data from address 0002H AAH Checksum C8H Terminator 03H Header 0202H Response Size 0003H Command Status FFH Number of tags 02H Status Byte 08H Checksum F3H Terminator 03H LRP820S-Series Long-Range Passive Reader/Writers RFID Interface ******************************************************************************* ABxF Command 86H: Block Write All DESCRIPTION Write a block of data to an RFID tag. DISCUSSION The Block Write All command is used to write segments of data to contiguous areas of tag memory. The timeout value is given in 1 msec increments and can have a value of 1EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return a syntax error. The Block Write All consists of a Family ID, the Reserved Byte, a Start address, and the Number of Bytes followed by the Bytes to be written to the RFID tag. If the write range exceeds the last tag address, the controller will return a syntax error message (error code 21H). The controller will return a response when the timeout expires. Field Content Header 0202H Command Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. 0009H plus the number of data Bytes Command 86H Family ID Tag Family ID - 00H = all tags Reserved Ignored, set to 00H Start Address 2-Byte value for the starting tag address Number of Bytes 2-Byte value for the number of bytes to be writen Timeout 2-Byte value for timeout in 1 ms units. (1EH - FFFEH) Data Bytes of data to be written. Checksum Optional Checksum Terminator 03H Example Writes 4 Bytes of data to the tag starting at address 0000H. A timeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for the completion of the Block Write All. Family ID is set to 00H so all tags-infield will be written to. Five tags are written to. LRP2000 Long Range Passice Reader/Writer 127 RFID Interface 128 Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 000DH Response Size 0003H Command Code 86H Command Echo 86H Family ID 00H Number of Tags 05H Reserved 00H Status Byte 08H Start address 0000H Checksum 69H Number of Bytes 0004H Terminator 03H Timeout,2 seconds 07D0H Data to write to address 0000H 52H Data to write toaddress 0001H 46H Data to write toaddress 0002H 49H Data to write toaddress 0003H 44H Checksum 68H Terminator 03H LRP820S-Series Long-Range Passive Reader/Writers RFID Interface ******************************************************************************* ABxF Command 87H: Read Tag SN All DESCRIPTION This command retrieves the 8-Byte tag serial number from all tags-infield or those with the specified Family ID. DISCUSSION Each ISO-15693 compliant tag has an unique (over 280 trillion possibilities) serial number. This number can not be changed and is not part of the available read/write address space. A special termination packet is sent when the timeout expires. A response is returned when the timeout expires. Field Content Header 0202H Command Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. 0005H for this command Command 87H Family ID Tag Family ID - 00H = all tags Reserved Ignored, set to 00H Timeout 2-Byte timeout value in 1 ms increments (1EH - FFFEH) Checksum Optional Checksum Terminator 03H LRP2000 Long Range Passice Reader/Writer 129 RFID Interface Example This example will read the 8-Byte serial number from all tags permitted by the Family ID and Reserved . In this example, one tag responds and the serial number is 1E6E3DC200000000H 130 Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0005H Response Size 0009H Command Code 87H Command Echo 87H Family ID 00H SN Byte 1 F2H Reserved 01H SN Byte 2 75H Timeout 07D0H SN Byte 3 03H Checksum 9BH SN Byte 4 00H Terminator 03H SN Byte 5 00H SN Byte 6 00H SN Byte 7 04H SN Byte 8 E0H Checksum E4H Terminator 03H Header 0202H Response Size 0003H Command Status FFH Number of Tags 01H Status Byte 08H Checksum F4H Terminator 03H LRP820S-Series Long-Range Passive Reader/Writers RFID Interface ******************************************************************************* ABxF Command 88H: Tag Search All DESCRIPTION Searches for tags within range of the antenna. DISCUSSION This command will activate the controller to "look" for tags within range of the antenna. As soon as the controller finds a tag it will return a command echo to the host. The timeout value is given in 1 msec increments and can have a value of 1EH to FFFEH (65,534 ms). If no tag is present it will return an error message. See Section 6.6 for information on the error messages. Field Content Header 0202H Command Size Packet length in Bytes excluding the header, command size, checksum and terminator Bytes. 0005H for this command Command 88H Family ID Tag Family ID - 00H = all tags Reserved Ignored, set to 00H Timeout 2-Byte value for the time in 1 ms units (1EH - FFFEH) Checksum Optional Checksum Terminator LRP2000 Long Range Passice Reader/Writer 131 RFID Interface Example Checks for the presence of an RFID tag within range of the antenna. Atimeout of 2 seconds (07D0H = 2000 x 1 msec increments) is set for thecompletion of the Tag Search All. A tag is found. 132 Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0005H Response Size 0003H Command Code 88H Command Echo 88H Family ID 00H Number of Tags 01H Reserved 00H Status Byte 00H Timeout 07D0H Checksum 73H Checksum 99H Terminators 03H Terminator 03H LRP820S-Series Long-Range Passive Reader/Writers RFID Interface ******************************************************************************* ABxF Command 8DH: Stop/Start Continuous Read All DESCRIPTION Starts and stops Continuous Read mode for multiple tags. DISCUSSION The Start/Stop Continuous Read All mode is initiated by issuing the command with the Number of Bytes set to any valid nonzero value. Stop the mode by sending the command with a read length of 0. While in thismode, any other command can be issued and it will be handled properly. After processing the new command, the controller will resume the Continuous Read All mode. The command has a parameter, Tag Repeat Count, that can prevent multiple reads of the same tag. A tag is not read a second time until a specified number of tags have been read since it was last read. Allowed values are from 0 up to 255 (FFH), where 0 means the tag can be re-read anytime. When Continuous Read All mode is interrupted with other commands, the tag delay count is stopped during execution of the other commands and then resumed. The controller will respond with an acknowledge packet followed by data packets for each tag read. CONFIG LED blinks after each packet transmission. Field Content Header 0202H Command Size Command length in Bytes excluding the header command size, checksum and terminator Bytes. Command 8DH Family ID Tag Family ID - 00H = all tags Reserved Ignored, set to 00H Start Address Tag address for the start of the read Number of Bytes 0 = stop. Any valid nonzero value indicates the number of Bytes to be read Tag Delay Number of tags that must be read before the same tag will be read again (0-225) Checksum Optional Checksum Message Terminator 03H LRP2000 Long Range Passice Reader/Writer 133 RFID Interface Example Reads 4 Bytes of data from the tag starting at address 0001H. The Family ID Byte is set to zero so all tags will be read. The Tag Delay is set to 20 (14H). Two tags respond with read data. Command from host Response from controller Field Content Field Content Header 0202H Heade 0202H Command Size 0008H Response Size 0001H Command Code 8DH Command Echo 8DH Family ID 00H Checksum 71H Reserved 00H Terminator 03H Start Address 0001H Read Length 0004H Tag Delay 14H Checksum 50H Terminator 03H After the controller sends the acknowledgment, it will send the read data from the 2 tags. Field Content Header 0202H Response Size 0005H Command Echo/ Tag 1 8DH Data from address 05H 0001H Data from address AAH 0002H Data from address 21H 0003H Data from address 44H 0004H 134 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Field Content Checksum 59H Terminator 03H Header 0202H Response Size 0003H Command Echo/ Tag 2 85H Data from address 0001H 05H Data from address 0002H AAH Data from address 0003H 21H Data from address 0004H 44H Checksum 59H Terminator 03H LRP2000 Long Range Passice Reader/Writer 135 RFID Interface ******************************************************************************* ABxF Command 8EH: Memory Lock All DESCRIPTION This command locks contiguous blocks of read-write memory. Once Bytes are locked, they cannot be written to, nor can they be unlocked. DISCUSSION The memory can be locked only in contiguous blocks. The command passes one parameter for the first block and another parameter for the number of blocks to be locked. This is one of only two ABx commands which address the memory of the tag using these parameters. The block structure of the tags is governed by the ISO15693 specification. ABx command 15H can be used to obtain the memory organization for a particular tag. Attempting to write to locked Bytes will return a Write Security Error. The command is formatted as shown below. Field Content Header 0202H Command Size Command length in Bytes excluding the header,command size, checksum and terminator Bytes. 07H for this command. Command 8EH Family Code Tag Family ID - 00H = all tags Reserved Ignored, set to 00H Timeout Timeout value given in 1 ms units Starting Block First block of memory to be locked Number of Blocks The number of blocks whose memory will be locked Checksum Optional Checksum Message Terminator 03H 136 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Example This example will lock blocks 0-3 on all tags-in-field with the FamilyCode of 02H. Two tags are found and locked. Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0007H Response Size 0003H Command Code 8EH Command Echo 8EH Family ID 02H Number of Tags 02H Reserved 00H Status Byte 08H Timeout 07D0H Checksum 64H First block 00H Terminator 03H Number of blocks 03H Checksum 8EH Terminator 03H LRP2000 Long Range Passice Reader/Writer 137 RFID Interface ******************************************************************************* ABxF Command 8BH: Write Family Code All DESCRIPTION This command can be used to write the Family Code of all tags in the field. It can also be used to selectively rewrite the family codes of tags with Family Codes already set to a particular value. The command is formatted as shown below. Field Content Header 0202H Command Size Command length in Bytes excluding the header, command size, checksum and terminator Bytes. 06H for this command. Command 8BH Current Family Code Tag Family ID - 00H = all tags used to select which tags are addressed Reserved Ignored, set to 00H Timeout Timeout value given in 1 ms units New Family Code The value which will be written to the Family Codes of all the addressed tags Checksum Optional Checksum Message Terminator 03H 138 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Example This example will change the Family code depending on the current value of the family code. Two tags are found with Family Code 02H and they are changed to 03H. Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0006H Command Size 0006H Command Code 8BH Command Code 8BH Family ID 02H Family ID 02H Reserved 00H Reserved 00H Timeout 07D0H Timeout 07D0H New Family Code 03H New Family Code 03H Checksum 92H Checksum 92H Terminator 03H Terminator 03H LRP2000 Long Range Passice Reader/Writer 139 RFID Interface ******************************************************************************* ABxF Command 8CH: Lock Family Code All DESCRIPTION This command locks the family codes of tags in the field. Once locked, the Family Codes cannot be changed or unlocked. DISCUSSION The command must pass a family code to select the tags whose family code will be locked. The controller will return a response when the timeout period expires. The parameter of the response in the number of tags written. The command is formatted as shown below. Field Content Header 0202H Command Size Command length in Bytes excluding the header, command size, checksum and terminator Bytes. 07H for this command. Command 8CH Family Code Tag Family ID - 00H = all tags Reserved Ignored, set to 00H Timeout Timeout value given in 1 ms units Checksum Optional Checksum Message Terminator 03H 140 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Example This example will lock the Family Code on all tags with the Family Code of 02H. Two tags are found and locked. Command from host Response form controller Field Content Field Content Header 0202H Header 0202H Command Size 0005H Response Size 0003H Command Code 8CH Command Echo 8CH Family ID 02H Number of Tags 02H Reserved 00H Status Byte 08H Timeout 07D0H Checksum 67H Checksum 95H Terminator 03H Terminator 03H LRP2000 Long Range Passice Reader/Writer 141 RFID Interface ******************************************************************************* ABxF Command 94H: SN Fill DESCRIPTION Fills only the RFID tag specified by serial number with a one byte value over multiple contiguous addresses. DISCUSSION This command is commonly used to clear an RFID tag's memory. It writes a one byte value repetitively across a specified range of tag addresses. Only the tag with the specified serial number will be affected by this command. The controller will return a response after the successful fill operation or when the timeout expires. The fill function requires a Serial Number, one data value byte, a starting address, and a fill length. It fills the specified tag with the data value byte, starting at the specified start address for the specified number of consecutive bytes. When Fill Length is set to 0, the controller will write fill data from the start address to the end of the tag's memory. The timeout value is given in 1 msec increments and can have a value of 1EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return a syntax error. It returns a response when done or when the timeout expires. Field Content Header 0202H Command Size Command length in Bytes excluding the header, command size, checksum and terminator Bytes. Command 94H Family Code Ignored, set to 00H Reserved Ignored, set to 00H Start Address 2-Byte value for the starting tag address Number of Bytes 2-Byte value for the length of the fill in number of Bytes Timeout Timeout value given in 1 ms units Serial Number Serial Number of the tag to be addressed Data Value Value to be written to all addressed bytes Checksum Optional Checksum Message Terminator 03H 142 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface A response to a successful command will follow this form. Field Content Header 0202H Response size 01H Command Echo 94H Checksum Optional Checksum Message Terminator FFFFH LRP2000 Long Range Passice Reader/Writer 143 RFID Interface ******************************************************************************* ABxF Command 95H: SN Block Read DESCRIPTION Read a block of data from a specified RFID tag. DISCUSSION This command is used to read segments of data from contiguous areas of tag memory. It is capable of handling up to 1 kByte of data transferred to the host with one command. The timeout value is given in 1 msec increments and can have a value of 1EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return a syntax error. The SN Block Read consists of Family ID and Serial Number a start address and length, followed by a timeout value. The 8-byte serial number of the target tag is specified. If the read length exceeds the last tag address, the controller will return an error message in the status byte. It returns a response when done or when the timeout expires. Field Content Header 0202H Command Size Command length in Bytes excluding the header, command size, checksum and terminator Bytes. Command 95H Family Code Ignored, set to 00H Reserved Ignored, set to 00H Start Address 2-Byte value for the starting tag address Number of Bytes 2-Byte value for the length of the fill in number of Bytes Timeout Timeout value given in 1 ms units Serial Number Serial Number of the tag to be addressed Checksum Optional Checksum Message Terminator 03H 144 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface A response to a successful command will follow this form. Field Content Header 0202H Response Size 0001H Command Echo 95H Checksum Optional Checksum Message Terminator FFFFH LRP2000 Long Range Passice Reader/Writer 145 RFID Interface ******************************************************************************* ABxF Command 96H: SN Block Write DESCRIPTION Write data to a single RFID tag specified by its serial number. DISCUSSION This command is used to write data to contiguous areas of tag memory. It is capable of transferring up to 1 kByte of data from the host to the controller in a single command. The timeout value is given in 1 msec increments and can have a value of 1EH to FFFEH (65,534 ms). When the timeout is set to 0, the controller will return a syntax error. The SN BlockWrite consists of a Family ID, Serial Number and start address followed by the data stream to be written to the RFID tag. If the write range exceeds the last tag address, the controller will return a syntax error, 21H. It returns a response when done or when the timeout expires. Field Content Header 0202H Command Size Command length in Bytes excluding the header, command size, checksum and terminator Bytes. Command 96H Family Code Ignored, set to 00H Reserved Ignored, set to 00H Start Address 2-Byte value for the starting tag address Number of Bytes 2-Byte value for the length of the fill in number of Bytes Timeout Timeout value given in 1 ms units Serial Number Serial Number of the tag to be addressed Data Data to be written to the tag Checksum Optional Checksum Message Terminator 03H 146 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface A response to a successful command will follow this form. Field Content Header 0202H Response size 01H Command Echo 96H Checksum Optional Checksum Message Terminator FFFFH LRP2000 Long Range Passice Reader/Writer 147 RFID Interface ******************************************************************************* ABxF Command 10H: Set Output DESCRIPTION Set the states of the output lines and output LEDs "A" through "D." DISCUSSION This command will set the state of the digital output lines using a oneByte parameter, Output Status. The least significant nibble of the Output Status Byte will determine the status of the outputs. The least significant bit of this nibble corresponds to Output A. The most significant bit of this nibble corresponds to Output D. The most significate nibble of the Output Status Byte is reserved and should beset to 0H. An output bit set to one(1) will turn the corresponding LED on and close the electronic switch of the output, allowing current to flow through the output circuit. An output bit reset to zero will turn the corresponding LED off and open the electronic switch in the output circuit. The following chart shows the hex values for all combinations of Output Status Bytes. To reset all output bits, issue the command with 00H for the Output Status Byte. Output Status Byte Remarks LSB Bit 3 Output D LSB Bit 2 Output C LSB Bit 1 Output B LSB Bit 0 Output A 00H Reset A, B, C, D 01H Set Output A Reset B, C, D 02H Set Output B Reset A, C, D 03H Set Output A, B Reset C, D 04H Set Output C Reset A, B, D 05H Set Output A, C Reset B, D 06H Set Output B, C Reset A, D 07H Set Output A, B, C 0 - Reset D 08H Set Output D Reset A, B, C 148 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Output Status Byte Remarks LSB Bit 3 Output D LSB Bit 2 Output C LSB Bit 1 Output B LSB Bit 0 Output A 09H Set Output A, D Reset B, C 0AH Set Output B, D Reset A, C 0BH Set Output A, B, D 1 - Reset C 0CH Set Output C, D Reset A, B 0DH Set Output A, C, D - Reset B 0EH Set Output B, C, D - Reset A 0FH Set Output A, B, C, D Field Content Header 0202H Command Size Packet length in bytes excluding the header, command size, checksum and terminator bytes. Command 10H Output Status Byte 1 byte representing the desired output settings in bits 03 Checksum Optional Checksum Terminator 03H LRP2000 Long Range Passice Reader/Writer 149 RFID Interface Example The following example sets Output B only and resets A, C, and D 150 Command from host Response from controller Field Content Field Content Header 0202H Header 0202H Command Size 0002H Response Size 0001H Command Code 10H Command Echo 10H Output Value Byte 02H Checksum EEH Checksum EBH Terminator 03H Terminator 03H LRP820S-Series Long-Range Passive Reader/Writers RFID Interface ******************************************************************************* ABxF Command 11H: Input Status DESCRIPTION Returns the status of User Inputs. DISCUSSION This command will interrogate the state of the User Input lines and return a one-Byte parameter, Input Status. The least significant nibble of the Input Status Byte is determined by the status of the outputs. The least significant bit of this nibble corresponds to Input A. The most significant bit of this nibble corresponds to Input D. The most significate nibble of the Input Status Byte will be set to 0H. A closed circuit in one(1) of the User Inputs will set the corresponding User Input bit to one, turning the corresponding LED on. An open circuit in one of the User Inputs will set the corresponding User Input bit to zero, turning off the corresponding LED. The following chart shows all of the valid hex values for the Input Status bytes. Input Status Remarks Byte LSB Bit 3 Input D LSB Bit 2 LSB Bit 1 Input C Input B LSB Bit 0 Input A 00H Inputs A, B, C, D, open 01H Input A, closed B, C, D, open 02H Input B, closed A, C, D, open 03H Input A, B, closed - C, D, open 04H Input C, closed A, B, D, open 05H Input A, C, closed - B, D, open 06H Input B, C, closed - A, D, open 07H Input A, B, C, closed - D, open 08H Input D, closed A, B, C, open LRP2000 Long Range Passice Reader/Writer 151 RFID Interface Input Status Remarks Byte LSB Bit 3 Input D LSB Bit 2 LSB Bit 1 Input C Input B LSB Bit 0 Input A 09H Input A, D, closed - B, C, open 0AH Input B, D, closed - A, C, open 0BH Input A, B, D, closed - C, open 0CH Input C, D, closed - A, B, open 0DH Input A, C, D, closed - B, open 0EH Input B, C, D, closed - A, open 0FH Input A, B, C, D, closed Field Content Header 0202H Command Size Packet length in bytes excluding the header,command size, checksum and terminator bytes. Command 11H Checksum Optional Checksum Terminator 03H Example The following example shows only Input B is ON and A, C, and D are OFF. 152 Field Content Field Content Header 0202H Header 0202H Command Size 0001H Response Size 0002H Command Code 11H Command Echo 11H Checksum EDH Input Status Byte 02H Terminator 03H Checksum EAH Terminator 03H LRP820S-Series Long-Range Passive Reader/Writers RFID Interface 6.5 ABx ASCII Protocol The ABx ASCII Protocol is based on the ABx Fast protocol. It uses the same headers and terminator (already ASCII characters) and converts the hex value of command and data bytes to printable ASCII (2 digit Hexadecimal notation). In another words, the hex values given in an ABx Fast command are transmitted as separate ASCII characters. Since it is an ASCII protocol, the Xon/Xoff handshake can be used. Command Packet Structure The command protocol is based on the following minimal packet structure. The data field and the checksum may not be present depending on the command type and your checksum setting. 6.6 ABx ASCII Protocol Command Structure Field Number of ASCII Characters Header (02H, 02H) Command Size Packet length in bytes excluding the header, Command size, checksum and terminator bytes. Command Command Code (Data) variable command data/parameters Checksum Optional Checksum Terminator (03H) Content Following a successful operation, the controller will respond with the following. The data field and the checksum may not be present depending on the command and your checksum setting. If a checksum is enabled in the Configuration Menu, then it is always present for every command. LRP2000 Long Range Passice Reader/Writer 153 RFID Interface 6.7 ABx ASCII Protocol Response Structure Field Number of ASCII Characters Header Content (02H, 02H) response Size 4 Packet length in bytes excluding the header, Command size, checksum and terminator bytes. Command Command Echo (Data) variable response data Checksum Optional Checksum Terminator (03H) If the controller encounters a fault it will respond with the following: 6.8 ABx ASCII Protocol Response Structure Field Number of ASCII Characters Header Content (02H, 02H) response Size 4 Packet length in bytes excluding the header, Command size, checksum and terminator bytes. Error Flag FFH Error Code Hex error code, see Table 11 for details Checksum Optional checksum Terminator (03H) Most RF operations will also require additional parameters and data that will be included in the command stream between the command code or echo and the terminator. The Header and Terminator are always STX and ETX respectively. Any other field value is in ASCII hex notation. Allowed values: '0'-'9', 'A'-'F'. Example: the value ABH (decimal 171) in ASCII protocol is transmitted as a 2-character string «AB», i.e. the 2 bytes: 41H 42H (ASCII values for 'A' and 'B'). The hex 154 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface value of the hex digits given in ASCII are: '0'-'9' = 30H - 39H, 'A'-'F' = 41H-46H. The sequence for each command is given with the response format in the preceding section. Referring to the ABx Fast command you can structure the ABx ASCII commands by using ASCII values for each digit of the hex values, excluding the header and terminator that are already ASCII characters. Command/Response Size The ABx ASCII requires the length of the packet be included in the command. All parameters and data between the Command Size and the terminator or checksum byte must be accounted for in the packet size word. This includes all command codes and parameters such as field definition for Block Read/Writes. The packet size remains the same with, or without the checksum. Checksum The optional checksum must be enabled from the operating mode menu to be available. The checksum is calculated by adding all the byte values (not the ASCII translation values) in the packet (less the values in the header, checksum if present, and terminator), discarding byte overflow and subtracting the byte sum from FFH. Example ASCII Command Fill Tag This command fills the specified number of cells from the specified start address with the specified value. Block size = 0 means filling to the end of the memory. The command will take the same form as the ABx Fast command. Field Content Header Command Size Packet length in bytes excluding the header, command size, checksum and terminator bytes. Given as four ASCII character value. 0008H for this command Command <30H><34H> (04) Start Address 4 ASCII character value for the starting tag address Fill Length 4 ASCII character value for the length of the fill in number of bytes Timeout 4 ASCII character value for timeout in 1 ms units. (1EH FFFEH) LRP2000 Long Range Passice Reader/Writer 155 RFID Interface Field Content Data value byte 2 ASCII character value for 1 byte of fill Checksum 2 ASCII character value for Optional Checksum Terminator The ASCII character string for a fill of 32 bytes, from address 0 with 55H value, timeout 5 sec., follows on the next page. 156 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Command from host Response from controller Field ASCII Hex Value ASCII String Field ASCII Hex Value ASCII String Header 02H STX Header 02H STX LRP2000 Long Range Passice Reader/Writer Command Echo Checksum Terminators 157 RFID Interface 6.9 ABx Error Codes Multi-tag Error Codes The LRP2000 will return an error if it encounters a fault during operation. Table 8 lists the possible error codes in Hexadecimal format. Error Code Description 04H Fill Operation has failed 05H Block Read has failed 06H Block Write has failed 07H Block Write security error 08H Search Tag Operation failed 21H Input Command does not match predefined format (syntax error) Additionally there are internal DSP errors, F1H through F5H, for use by Escort Memory Systems technical support. ABx Standard ABxS error codes are returned in the LSB of the second word passed to the host. The format of the error response is shown below. MSB LSB Remarks AAH FFH Command Error 00H XXH Error Code FFH FFH Message Terminator Example A BlockWrite fail error message would appear as: AAFF 0006 FFFFH. 158 LRP820S-Series Long-Range Passive Reader/Writers RFID Interface ABx Fast The format of the error response is shown in the table below. Field Bytes Contents Header 02H 02H Response Size 00H 02H Error Flag FFH Error Code XXH Checksum XXH Terminators 03H Example A BlockWrite fail error message would appear as: 0202 0002 FF06 F803H. ABx ASCII The format of the error response is shown below. Field Number of ASCII Contents Characters Header 02H 02H 02H Response Size Packet length in bytes excluding the header, response size,checksum and terminator bytes. Error Flag FFH Error Code XXH - see Table 7 for details Checksum XXH - optional checksum Terminators 03H LRP2000 Long Range Passice Reader/Writer 159 RFID Interface A BlockWrite fail error message would appear as an ASCII character string: 0002FF06F8 . In hexadecimal the commands appear as: 02H 02H 30H 30H 30H 32H 46H 46H 30H 36H 46H 38H 03H Multi-tag Command Error Code When the multi-tag commands encounter a fault condition they indicate the error in a STATUS byte returned in the response. If any of the flag bits of the Status byte are set, then an error has occurred during command execution. The format of the response is in all other ways, the same as a successful response. The STATUS byte is defined as follows: Reserved R/W Error Reserved Internal Error Timeout Verify Error Write Security Error Reserved Some of the error conditions are the same as found in the single-tag commands, some are new and relate only to the anticollision. If any of the flag bits of the returned Status are set, then that condition occurred during the command execution. Multiple conditions can occur in the same command. 160 Antenna Failure There is an error at the antenna R/W error Error during the tag memory access Collision Collisions detected: more than one tag in the field answered to the LRP2000 at the same time, meaning a higher LRP820S-Series Long-Range Passive Reader/Writers RFID Interface Antenna Failure There is an error at the antenna Anticollision This bit is reserved Internal Error Internal error in low-level firmware (contact Escort Memory Systems technical assistance) Timeout Timeout expired Verify Error Set when re-read verification fails Syntax Errors Syntax errors (error code 21H) will be returned in the same format as described for the single-tag commands. LRP2000 Long Range Passice Reader/Writer 161 RFID Interface 162 LRP820S-Series Long-Range Passive Reader/Writers
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