Modbus RTU
- Connect the Modbus master to the controller via the RS-485+ and RS-485- cables.
- Supply the controller with voltage.
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Change the configuration values if necessary.
The controller is set to slave address 5 ex works, baud rate 19200 baud, even parity, 1 stop bit.
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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.