NP5 Modbus RTU Online Manual

Modbus RTU

  1. Connect the Modbus master to the controller via the RS-485+ and RS-485- cables.
  2. Supply the controller with voltage.
  3. 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.
  4. To test the interface, send bytes 05 65 55 00 2F A7 to the controller (you can find a detailed description of the Modbus function codes in chapter Modbus RTU).
    The object dictionary is read out.
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