DCS : Distributed Control System
Control is distributed over a network. We can assign safety & related interlock for a part or portion of the plant to a particular node or a combination of nodes.
For ex: In a power station we can assign each RTU/ controller for the control of a every boiler, so that the trip/problem with a controller is not going to affect the operation of another boiler or controllers.
SCADA: Supervisory control & data aquisition system.
Primary objective is data aquisition for monitoring and supervisory control. If a failure affect any part of the system, the affect will be on the complete system due to the supervisory control function originated from a supervisory system.
If required, please feel free to contact for further details.