![]() This mitigates a single processor failure. The key attribute of a DCS is its reliability due to the distribution of the control processing around nodes in the system. Today the functionality of Supervisory control and data acquisition (SCADA) and DCS systems are very similar, but DCS tends to be used on large continuous process plants where high reliability and security is important, and the control room is not geographically remote.įunctional levels of a manufacturing control operation The DCS concept increases reliability and reduces installation costs by localising control functions near the process plant, with remote monitoring and supervision.ĭistributed control systems first emerged in large, high value, safety critical process industries, and were attractive because the DCS manufacturer would supply both the local control level and central supervisory equipment as an integrated package, thus reducing design integration risk. This is in contrast to systems that use centralized controllers either discrete controllers located at a central control room or within a central computer. ![]() ![]() A distributed control system ( DCS) is a computerised control system for a process or plant usually with many control loops, in which autonomous controllers are distributed throughout the system, but there is no central operator supervisory control.
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