RFID Communications
101 LRP2000 Passive Reader/Writer
Example

This example reads four 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 Code 82H Command Echo 82H
Family Code 03H SN Byte 1/tag 1 A6H
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
Terminators <ETX> 03H SN Byte 7/tag 1 04H
SN Byte 8/tag 1 E0H
Data Byte 1/ tag 1 52H
Data Byte 2/tag 1 46H
Data Byte 3/tag 1 49H
Data Byte 4/tag 1 44H
Checksum 4BH
Terminator 03H
Header/tag 2 0202H
Response Size 000DH
Command Echo 82H
SN Byte 1/tag 2 F1H
SN Byte 2/ tag 2 72H
SN Byte 3/tag 2 03H
SN Byte 4/tag 2 00H
SN Byte 5/tag 2 00H
SN Byte 6/tag 2 01H
SN Byte 7/tag 2 04H
SN Byte 8/tag 2 E0H
Data Byte 1/ tag 2 52H
Data Byte 2/tag 2 46H
Data Byte 3/tag 2 49H
Data Byte 4/tag 2 44H
Checksum 00H
Terminator 03H
Header/tag 3 0202H
Response Size 000BH
Command Echo 82H