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For some applications, converting RS-485 (BACnet and Modbus) to a fiber optic link is desirable.

  • Increased range of 2.5 miles (4 km) or more.
  • Total electrical isolation, which can be desirable when operating in 480 Vac or 600 Vac panels.
  • Complete immunity to electromagnetic interference.


Continental Control Systems doesn’t make a WattNode meter with a fiber optic cable interface and doesn’t sell converters, but we are aware of at least two sources for converters from RS-485 to fiber:


Keywords: RS485, EIA485, EIA-485