Programming Guide

CHUMP Reference Guide
48
Reader Configuration Overview
SAMSys reader software is easily configured for different
operating modes and protocols. Typical reader functions that can
be configured include the following:
• CHUMP programming mode
• RF communication mode (polled or continuous)
• Serial communication mode (polled or continuous)
• Serial multidrop addressing
• Protocol configuration
• Protocol selection
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.
Commonly used configuration variables include the following:
• GCW – General Configuration Word
• SCW – Serial Configuration Word (CHUMP 1.31 and above)
• SMA – Serial Multidrop Address
• MCW – Multiplexer Configuration Word (UHF reader)
• MSW – Multiplexer Select Word (MSW)
• PCW – Protocol Configuration Word
• PSW – Protocol Select Word
• Pxx – Specific Protocol Configurations
Configuration variables are described in the following section.
For specific syntax information on the Configuration Write
command refer to Chapter 2.