Question: Is the human-machine interface in a PLC system equivalent to the operation station in a DCS?
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Is the human-machine interface in a PLC system equivalent to the operation station in a DCS?
There is no significant difference between current PLC and DCS systems; if any differences exist, they lie in the number of control modules, the types of variables that can be handled, and the scanning cycle, among other things. The human-machine interface of PLCs is the same as that of DCS systems; both are referred to as HMI. The difference is that the HMI systems for PLCs are often from third-party manufacturers, such as Intouch, iFIX, Wizcon, WIN CC, and Citect. In China, there are domestic brands like Likong and KingView ； The HMIs of the DCS system operation stations are all provided by the DCS system manufacturer itself. That’s the only difference; nothing else! !