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What is the difference between PLC-HMI and DCS
as each function of DCS based system is possible in PLC ?
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Answer Posted / ghanshyam khatri
plc is programmable logic control ,plc is used in small
application,it is works on small program which is created
in computer then send to plc.plc have memory to store this
programme and then perform.
hmi is human machine interface,hmi is used for smaller
appliction then plc.
dcs stand for distributed control system this is used for
big plants(for larger amount of i/o)
main diffrence in plc n dcs is
1.in dcs we can change programme during it is working,this
is not possible in plc.
2.in dcs trend and history is available.
| Is This Answer Correct ? | 4 Yes | 3 No |
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