Fieldbus can be defined as a digital, serial, multidrop, data bus for communication with industrial control and instrumentation devices such as sensors, transducers/transmitters, actuators, local controllers, etc.
Alternatively, Fieldbus can be defined as a digital, two-way, multidrop communication link among intelligent or smart 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.
There exists many different fieldbuses (digital communication standards) designed to interconnect instruments. Some of these fieldbuses include:
- Foundation fieldbus
- Modbus
- HART
- CANbus
- Profibus PA
- Profibus DP
- Profibus FMS
- ControlNET
- AS-I
- BACnet
- DeviceNet
- LonWorks
Related articles:
- Basic Features of Foundation Fieldbus (FF)
- Topological Network Structures used in Fieldbus Systems
- Features of HART Communication Protocol
- How RS-232, RS-422 and RS-485 Networks are applied in Instrumentation
- 4-20 mA Transmitters (2-wire, 3-wire and 4-wire Types)
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[…] smart sensors reduces the load on the processor and communication to the processor can be done via Fieldbus. The PID module can employ either analog or digital techniques to implement the control […]