How does a SCADA system differ from a Distributed Control System (DCS)?
For all intents and purposes, a SCADA system is a DCS. In the past, SCADA was centrally located and all control decisions were made by one central entity. As technology has evolved, the decision making functions have been distributed throughout the system. Now, remote stations make control decisions locally based on control parameters and values that may or may not be collected at the local station.
