User's Manual

Table Of Contents
The command is formatted as shown below.
Field Remarks
Header <STX><STX>
Command Size Command length in bytes excluding the header, command size, checksum
and terminator bytes.
Command 8EH
Family Code Tag Family ID - 00H = all tags
Anticollision index Number of tags-in-field expected
Timeout Timeout value given in 1 ms units
LockMSB Bits 8-15 of the configuration word
LockLSB Bits 0-7 of the configuration word
Checksum Optional Checksum
Message Terminator <ETX>
EXAMPLE
This example will lock bytes 0-3 on all tags-in-field with the Family ID of
02H. Two tags are found and locked.
Copyright © 2000 Escort Memory Systems
LRP820-Series Long-Range Passive Reader/Writer
127
Response from LRP820
Field Contents
Header
<STX><STX>
02H
02H
Response Size 00H
03H
Command Echo 8EH
Number of Tags 02H
Status byte 08H
Checksum 64H
Terminator <ETX> 03H
Command from Host
Field Contents
Header
<STX><STX>
02H
02H
Command Size 00H
07H
Command Code 8EH
Family ID 02H
Anticollision Index 01H
Timeout 07H
D0H
LockMSB 00H
LockLSB 01H
Checksum 8FH
Terminator <ETX> 03H