User Manual

Table Of Contents
Standard RFID Interface
LRP76 Long Range Passive Reader/Writer 35
EXAMPLE
The following is a typical command using a checksum.
The summed values begin with the Command Size and end with the
timeout value. That sum, less overflow, is subtracted from FFH for the
checksum value.
Thus: 00 + 03 + 01 +07 + D0 = DB
FF - DB = 24H
Command from Host
Field Contents
Header
<STX><STX>
02H
02H
Command Size 00H
03H
Command Code 01H
Timeout 07H
D0H
Checksum 24H
Terminator <ETX> 03H
Sum these values to
calculate the checksum