Use terminals 1 ... 4 for supply power and Modbus output. In addition to RS-485 data wires, the common wire (ground reference) must be connected between the RS-485 host and the transmitter.
| Do not connect the analog outputs (terminals 5 ... 8) at the same time when supply power and/or Modbus output is connected to terminals 1 ... 4. Having both terminals connected simultaneously may result in erroneous analog readings caused by effects of possible ground loop. |