December 2010

Process Control/Information Systems

Critical concepts in fieldbus system design differ from a conventional DCS

Here are some key topics calling for a conceptual change from the traditional DCS

Majumder, D., Invensys India Pvt., Ltd.

With the advent of Foundation Fieldbus (FF) and its wide deployment in the industry, there is a paradigm shift in the concept of the commonly used terms/specifications referred to in a conventional DCS and which needs to be understood in context of the FF. Numerous papers, documents and publications pertaining to FF are available, specifically of the concept, the design aspects, etc., and the Fieldbus Foundation website: http://www.Fieldbus.org. This article will cover, in short, some key topics that call for a conceptual change from the traditional DCS and the FF-based DCS. Key areas include:• Special power supply requirement and speed/bandwidth limitation for FF-based systems&#

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