September 24, 2012
Fieldbus is a digital industrial networking technology for transporting data between control devices (such as a PLC or DCS) and field devices (such as I/O, drives, actuators and transmitters) for the purposes of controlling production lines and equipment. By improving communications between these devices, a fieldbus facilitates significant improvements in the way plants are controlled, monitored and managed in both process and factory automation environments.
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PROFIBUS, the world’s most widely used fieldbus, was introduced in 1989 and is standardized under IEC61158. It is supported by more than 1400 equipment vendors around the world. The single standardized approach means users have a wide choice of vendors and products, factors that encourage higher performance and lower costs. A fieldbus-enabled plant also delivers more and better data to supervisory systems, to support improved management strategies across the enterprise.