Can anyone explain in a simple way the difference between
DCS and PLC?
- 7 Answers
- 11541 Views
- Honeywell, I also Faced
- E-Mail Answers
Answer Posted / wesam
Big difference between DCS and PLC.
PLC is a part of DCS it deals with I/O signals of a system,
however DCS is a high level of control.
A typical DCS contains
1-Monitors for view and control.
2-HMI at field which contains a PLC system.
and this HMI is connected by a modbus or a fiber optical
link, all critical signals are hard wired to DCS.
An OPC system for interfacing is used in case of multy DCS'
for different manufactures.
in addition we are able to control multy HMI systems in one
time through a DCS.
| Is This Answer Correct ? | 6 Yes | 0 No |
Post New Answer View All Answers
What is the difference between working pressure and calibration pressure of a control valve
you must show the examples application and give at least 4 types of transducer/sensors that can minimize the failure during the manufacturing of the resistors.
What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.
what is interlock system and why we use of this?
A PLC is programmed to drive three motors A, B and C as follows : After running motor A for an hour, motor B should get ON and motor A should get OFF. And after running motor B for an hour, motor C should get ON and motor B should get OFF. And after running motor C for an hour, motor A should get ON and motor C should get OFF. (That is, a cyclic repetition with time period one hour) Now, the second condition is: If any motor gone faulty and is tripped, the consecutive motor should get ON and the faulty (tripped) motor should be eliminated from cyclic repetition. The remaining two motors should bear the cyclic repetition of one hour each. (For healthy motor take logic as high and for tripped motor take logic as low) Now, the third condition is: When motor A load(Amps) exceeds 60% of its rated load, motor B should get ON in parallel to motor A. And when both motors A & B are running in parallel, and if their load exceeds 60% of their rated load, motor C should also start in parallel to A & B. [Here the cyclic repetition is eliminated, until their loads become normal(40%)] [Take logic high(1) for load at 60% and logic low(0) for load at 40%] Now draw a flow chart or a ladder diagram to fulfill the above condition.
what does it mean an active front end in vfd plz explain it briefly
where uses EXe /EXd/Exo/Exn/Exp/Exq/EXia
what is output of FOUNDATION FIELD BUS transmitter
How vortex sensor used for steam flow measurment can be checked on line i.e without taking out from process line.
applications of plc in printing and packaging?
Is there any relation between Artificial Intelligence and Instrumentation?
what happen if i increase height of displacer type LT.accuracy or sensitivity are affected.why?
Why trim span ? How?
how to calculate signal cable sizing? and multipair cable sizing??explain in brief?
sir,would you please send me the Hindustan petroleum corporation limited papers(HPCL).my e-mail ID is ujjwal_sharma1983@yahoo.com
