GFK-0356Q Chapter 5 CPUs 5-21
5
Protocols Supported
Starting with Firmware Release 9.00, breakfree SNP became the default protocol on the three
Serial Ports on these modules. See “Breakfree SNP Protocol” on page 5-13 for details.
SNP Port (Through Power Supply Connector)
■ SNP slave
■ SNP-X slave
Port 1 and Port 2 (Through Module’s Front Panel Connectors)
■ SNP master and slave
■ SNP-X master and slave
■ RTU slave (starting with Firmware Release 8.0)
■ Serial I/O - Limited functionality (write only) starting with Firmware Release 8.0, will have
full functionality (read and write) starting with Firmware Release 10.0. Used with autodialer
feature to call a pager. To use this feature, configure protocol as
Custom.
See GFK-0582,
Series 90 PLC Serial Communications User’s Manual
for details.
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