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

More information

Modbus RTU supported devices.

Modbus RTU supported memory types.

Modbus RTU required documents.

Modbus RTU hardware configuration requirements.

Validating Modbus RTU Communications.

CIMPLICITY  configuration for Modbus RTU.

Modbus RTU advanced configuration.