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About Modbus RTU

The Modbus RTU Communications option supports a multi-drop configuration with the Modbus RTU Communications enabler functioning as the master. You must configure a CIMPLICITY device for each physical device (or slave) from which data will be collected.

This communications option supports the following CIMPLICITY features:

Polled reads at user defined rates
Poll after setpoint
Triggered reads
Analog deadband
Alarm on communications failure
Server Redundancy configurations

This communications option supports the following data types:

Signed 8, 16, and 32 bit integers
Unsigned 8, 16, and 32 bit integers
Floating point
Text
Arrays