... AI, AO, DI, DO, PID 1. ProfileCompliant with FF standard, provide FF communication ability to MODBUS deviceSupport ... instantiationSupport standard DD or EDD specificationElectrical interface connected with MODBUS device supports TTL level, RS485 and RS232Able ... 5V power supply output2. Physical Parameter Bus signall compliant with IEC61158-2 physicalBus power supply9 ~ 32VOperating temperature-40 ...