User's Guide

MP9320 User’s Guide
40
Changing Reader Configuration
To setup a SAMSys reader, the Configuration Write (Cw)
command is used to write a three-letter configuration variable
name and a 32-bit word to the reader. This word contains the
individual setup parameters required by the reader.
For specific syntax information on the Configuration Write
command refer to Chapter 2 in the Comprehensive Heuristic
Unified Messaging Protocol Reference Guide.
Commonly used configuration variables include the following:
• GCW – General Configuration Word
• SCW – Serial Configuration Word (CHUMP 1.31 and above)
• MCW – Multiplexer Configuration Word
• SMA – Serial Multidrop Address
• PCW – Protocol Configuration Word
• PSW – Protocol Select Word
• Pxx – Specific Protocol Configurations
The following example shows the Cw command used to write the
MCW to the reader.
}Cw,d:MCW,b:00040200! <CRLF>
where:
00040200 = 4 antennas, 2 inventory
round operations per antenna.
If the Cw command was successful, the reader responds with the
following:
{A7; <FCS><CRLF>