About Modbus RTU

The Modbus RTU Communications option supports a multi-drop configuration with the Modbus RTU Communications enabler functioning as the client. You must configure a CIMPLICITY device for each physical device (or server) 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