- Connect the Modbus master to the controller via the RS-485+ and RS-485- cables.
- Supply the controller with voltage.
Change the configuration values if necessary.
The controller is set to slave address 5 ex works, baud rate 19200 Kbaud, even parity, 1 stop bit.
To test the interface, send bytes
05 65 55 00 2F A7to the controller (you can find a detailed description of the Modbus function codes in chapter Modbus RTU).The object dictionary is read out.