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