DCS System

DCS System: A DCS System is preferred over a central computer system for the following reasons. Central Computer System (CCS) exposes the plant to the risk that the system might fail.…

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PLC Operation

PLC Operation: To understand the PLC Operation, consider the simple process shown in Fig. 21.63 In this process a mixer motor is to be used to automatically stir the liquid…

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PLC Components

PLC Components: A PLC is a solid state device designed to perform logic functions previously accomplished by electro-magnetic relays. Basically, the PLC Components is an assembly of solid state digital…

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PLC Hardware

PLC Hardware: PLC hardware falls into the following physical configuration: Fixed Input/ Output (I/O) and Modular I/O. 1.Fixed 1/0 PLCs A fixed PLC Hardware consists of a fixed, or built-in,…

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