Programming Guide

CHUMP Commands
41
Wf
Name
Write AFI
Description
For ISO 18000-6A tags, this command runs a Write AFI
command. The SUID flag is set and the SUID bytes are sent. If
the “d:” sequence is not sent, the tag must first be selected.
The reader remembers the AFI setting and sends the value with
the subsequent Init_Round commands. The AFI value can be
overwritten by performing a configuration write with variable
P6A.
Type
Command
Format
}Wf,b:xx[,d:<tag ID>];<FCS><CRLF>
}Wf,b:xx[,d:<tag ID>]!<CRLF>
where:
b:xx is the AFI (one HEX byte, block data).
d:<tag ID> is the tag identification.
Return Message
{A[,e:xx]*;<FCS><CRLF>