User Manual Part 2

RFID Interface
140
LRP820S-Series Long-Range Passive Reader/Writers
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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