Distributed Control System refers to a control system usually of a manufacturing System, process in which the controller elements are not central in location but are distributed throughout the system with each component sub-system controlled by one or more controllers DCS was introduced in 1975 by:
DCS General Architecture
•Data Acquisition Unit: Digital (discrete) and analog I/O can be handle.
•Batch Sequencing Unit: This unit controls a timing counters, arbitrary function generators, and internal logic.
•Local Display:This device provides analog display stations,and video display for readout.
•Bulk Memory Unit: This unit is used to store and recall process data.
Advantages of DCS:
What is the difference between a PLC and a DCS?