WHAT IS THE DIFFERENCE BETWEEN PLC AND DCS
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Answer Posted / rajaram
NOW DAYS THERE ARE NO MORE DIFFERENCE IN PLC & DCS,
BASICALLY PLC ARE USED REDUCED NO OF ELECROMAGNETIC RELAY &
dcs IS USED FOR REDUCED pid CONTROLLER.
NOWDAYS PLC ARE SUING FOR SEQUENCIAL CONRROL I.E ESD AND
OTHER SAFETY RELATED SPECIFIC SYATEM OND OTER HAD DCS IS
BEING USED FOR CONROL OVER ALL PLANT AT ONE PLACE USING V
NET(YOKOGWA SYSTEM) OR DELTA v(EMERSON).
PLC TAKES LESS TIME TO CONTROL THE PROCESS MEANS CONTROL
ACTION HOWEVER IN CASE OF DCS IT TAKES MORE TIME.
IN DCS DIFFERENT PLC CAN DO COMMUNICATE EACHOTHER AND DCS
EXECUTED CONTROL ACTION BY OPERATOR THROUGH FUCNTION BLOCK
AND IN plc IT IS FERFORMED BY LADDER.
PLC ARE NOT PROPRIETARY SYSTEM HOWEVER DCS PROPRIETARY
SYSTEM .
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