Basics of Distributed Control System (DCS)


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DISTRIBUTED CONTROL SYSTEM
A system of dividing plant or process control into several areas of responsibility, each managed by its own controller, with the whole system connected to form a single entity, usually by means of communication buses

Used for continuous control of chemical processing
Control functions are distributed throughout redundant, deterministic networked computer architecture
I/O interface and level 1 control functions
advanced control functions
human interface
DCS replaced the mainframe computers of the 1970’s
non-distributed
single point of failure
Added a high level of robustness to control systems
Pre-configured functionality geared toward process industries, but have a relatively high cost


What is Dcs ,,how it works and how it dividing current/signal through IO module. BASIC ..step by step?