Configuring serial communications using the display

You can configure your meter’s basic serial communications settings using the display.

Before configuring serial parameters, make sure you have a unique unit ID for your meter and know the serial network settings (protocol, baud rate, parity and stop bits).

  1. Press the Home button.
  2. Navigate to Setup Menu > Communications Setup.
  3. Press the up and down buttons to scroll and select COM1 Setup.
  4. Configure your meter’s serial settings as required.

    Serial communications settings

    Parameter Values Description


    ION, Modbus RTU, Modbus Master, DNP v3.00, EtherGate, GPS: Truetime/Datum, GPS: Arbiter, GPS: Arbiter-Vorne, Factory, None

    Sets the communications protocol for your meter’s RS-485 port

    NOTE: the NONE setting stops communications using this port.

    Baud Rate

    2400, 4800, 9600, 19200, 38400, 57600, 115200

    Sets the data rate, in bits per second

    Rx Timeout


    Sets the transmit delay in seconds

    Unit ID


    Sets the meter’s unique ID on the RS-485 network

    NOTE: Modbus serial device range 1 to 247

    Serial Port

    8N1, 8N2, 8E1, 8E2, 8O1, 8O2

    Sets the parity and stop bits for the port

    RS485 Bias

    OFF, ON

    Turns biasing off or on when mastering devices over the RS-485 port

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