Modbus RTU Hardware Installation

When installing Modbus RTU hardware, you should be aware of the following.

Modbus RTU Controller Configuration

When configuring a controller for use with a CIMPLICITY project, do the following:

  1. Configure the controller/communications card for Modbus RTU communications.

  2. Assign each slave within the configuration a unique slave address between 1 and 247 (decimal).

  3. Configure all slaves at the same baud rate and parity as the master (the Modbus RTU Communications enabler).

Connecting to a Series Six

To connect a personal computer to a Series Six with a CCM3 card installed, refer to the Series Six Programmable Controllers Data Communications Manual (GFK-25364).

More information

Modbus RTU hardware configuration requirements.