A fieldbus is an industrial network system for real-time distributed control. It is a way to connect instruments in a … See more

The most important motivation to use a fieldbus in a distributed control system is to reduce the cost for installation and maintenance of the installation without losing the high availability and reliability of the automatio… See more

There were many competing technologies for fieldbuses and the original hope for one single unified communications mechanism has not been realized. This should not be unexpected since fieldbus technology needs to b… See more

The amount of cabling required is much lower in fieldbus than in 4–20 mA installations. This is because many devices share the same set of cables in a multi-dropped fashion rather than requiring a dedicated s… See more

Despite each technology sharing the generic name of fieldbus the various fieldbuses are not readily interchangeable. The differences between them are so profound that they cannot be easily connected t… See more

As of 2008 , in process control systems, the market is dominated by Foundation Fieldbus and Profibus PA. Both technologies use the same physical layer (2-wire Manchester-encoded current modulation at 31.25 kHz) but are not … See more

• Parallel Redundancy Protocol
• Media Redundancy Protocol See more