Definitions for "Fieldbus"
A Fieldbus is a digital, two-way, multi-drop communication link among intelligent measurement and control devices. It serves as a Local Area Network (LAN) for advanced process control, remote input/output and high speed factory automation applications.
a standard for digital communications between field devices and their control systems. Devices include flow, temperature, and pressure sensors and actuators of valves and motors.
A communications protocol sometimes used in SCADA systems.