vikibadani

• Feb 21st, 2007

 

PLC stands for Programmable Logic ControllerDCS for Data control SystemSCADA for Supervisory Control And Data Acquisition SCADA involves supervision by a user, in most cases the plant controller.Whereas PLC is the means by which he performs the function of SCADA.DCS on the other hand stand only to control the system and not to log any datain the process of controlling.

jibingeorge85

 Profile Answers by jibingeorge85 

• Aug 26th, 2008

 

DCS controllers are faster than PLCs, In DCS controller we can adjust the scan time, DCS are costly more inputs and outputs are there for DCS and SCADA does not have a dedicated controller. In a DCS system there is SCADA system already in it, but for PLC sydtem addition all SCADA software must be provided.