Catalog
The traditional role of the human-machine interface (HMI) or operator interface (OI) in process control applications has been to simply display information from the process instrumentation and control system on a screen, and convey the operator’s keystrokes, clicks or touches to the appropriate external hardware for execution. Though it may be configured and endowed with powerful software that eases and speeds those basic tasks, the HMI itself adds little value beyond a pretty picture and reliable means of operator input.
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