What is a fieldbus?

What is a fieldbus?

What is a Fieldbus? Fieldbus is a digital two-way multidrop communication link between intelligent field devices. It is a local area network dedicated to industrial automation. It replaces centralized control networks with distributed control networks and links the isolated field devices such as smart sensors/ transducers/actuators/controllers.

What is the role of fieldbus in process control?

It replaces centralized control networks with distributed control networks and links the isolated field devices such as smart sensors/ transducers/actuators/controllers. Foundation Fieldbus H1 and PROFIBUS-PA are the two fieldbus technologies used in process control.

What is multidrop communication facility in fieldbus?

The multidrop communication facility in fieldbus results in enormous cable savings and resultant cost reduction. A fieldbus device must have a fieldbus interface unit for proper communication to take place, and is shown in Figure. A comparison between a 4–20 mA system and a fieldbus system is shown in Table.

What is a 4-20 mA fieldbus device?

A fieldbus device must have a fieldbus interface unit for proper communication to take place, and is shown in Figure. A comparison between a 4–20 mA system and a fieldbus system is shown in Table. A conventional 4–20 mA current transmission system has two wires each for each of the individual field devices employed.