About Modbus RTU Slave Communications

The Modbus RTU Slave Communications option supports a multi-drop configuration with the Modbus RTU Slave Communications enabler functioning as a slave. In effect, the Modbus RTU Slave Communications enabler presents the CIMPLICITY Points as if they were data values from one or more Modbus RTU Slave devices.

The CIMPLICITY Points are mapped to Modbus Addresses, allowing a Modbus Master to obtain Point Values as if they were coils or registers on a Slave device.

SystemLink uses the Modbus RTU Slave feature to enable CIMPLICITY to collect point values over the Internet using the Modbus protocol. The node that is set up as the Modbus Master can collect data from the Modbus Slave nodes via the Internet.

More information


Modbus RTU Slave required documents.

Modbus RTU Slave getting started steps.

Configuration overview.


Test Program