RFID Communications
LRP2000 Passive Reader/Writer 78
6.4.17 ABxS Command 8BH: Write Family Code All
DESCRIPTION
Command 8BH 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.
Example
This example changes the family code depending on the current value of the family code. Two tags are
found with family code 02H and are changed to 03H.
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 that will be written to the Family Codes of all the addressed tags
Message Terminator FFFFH
Command from Host Response from Controller
MSB LSB Remarks MSB LSB Remarks
AAH 8BH Perform Command 8BH AAH 8BH Command Echo
02H 00H Family ID/Reserved 02H 08H Ntags/Status
07H D0H 2-second Timeout FFH FFH Message Terminator
00H 03H New Family Code
FFH FFH Message Terminator