Programming Guide

CHUMP Reference Guide
20
Cw
Name
Configuration Write
Description
Writes configuration variable with reply.
Type
Reader management command with reply
Format
}Cw[,d:<name>,b:<value>][,f:xx];
<FCS><CRLF>
}Cw[,d:<name>,b:<value>][,f:xx]! <CRLF>
where:
d:<name> is an identifier with the 3-letter name of the
configuration variable (CV).
b: is the block data (up to 4 bytes).
f: is the flag byte.
Return Message
{A[,e:xx];<FCS><CRLF>
Special Note
If f:02, all CVs are erased. At the next reset, the reader returns
to factory defaults.
If f:01, data is written to Non-Volatile Memory (NVM).
If d: and b:, then the specified CV is written to NVM.
If f:01 appears alone, all CVs are written to NVM.