Foundation Fieldbus Interoperability Test (FFIT)

Fieldbus is a digital 2-way, multi-drop communication link among intelligent measurement and control devices such as sensors, actuators, controllers and etc. It serves as Local Area Network (LAN) for advanced process control, remote I/O and high speed factory automation applications. In analog control system, instrument devices such as sensor produce 4- 20 mA signal output than travel from field devices to the control process at control room and again travelling from control room to the instrument devices with dedicated cable.