User Manual

Table Of Contents
Standard RFID Interface
26 LRP76 Long Range Passive Reader/Writer
5.6.4 Command 7 (07H): Read Tag Serial Number
DESCRIPTION
This command retrieves the 8-byte tag serial number.
DISCUSSION
Each LRP tag has a unique serial number. This number can not be
changed and is not part of the 48 available data bytes. The tag serial
number will be returned in the LSB only with the MSB as 00H. The
timeout value is given in 1 msec increments and can have a value of
1EH to FFFEH.
EXAMPLE
This example reads the 8-byte serial number. In this example the
serial number is 1E6E3DC200000001 in hexadecimal. A timeout of 2
seconds (07D0H = 2000 x 1 msec increments) is set for the
completion of the Read Tag Serial Number.
Field Description
Header AAH
Command Command number in hex
Timeout Timeout value given in 1 ms units (1EH - FFFEH)
Message
Te r mi n at o r
FFFFH
Command from the Host Response from the LRP76
MSB LSB Remarks MSB LSB Remarks
AAH 07H Perform Command 7 AAH 07H Command Echo
07H D0H Timeout value 00H 1EH Tag ID byte 1
FFH FFH Message Terminator 00H 6EH Tag ID byte 2
00H 3DH Tag ID byte 3
00H C2H Tag ID byte 4
00H 00H Tag ID byte 5
00H 00H Tag ID byte 6
00H 00H Tag ID byte 7
00H 01H Tag ID byte 8
FFH FFH Message Terminator