A control engineer downloads new logic to PLCs, configures controller parameters, and maintains the master copies of control programs from a single privileged machine. This machine is the:
- A.Operator HMI
- B.Historian server
- C.Engineering workstation
- D.Remote terminal unit
Why C is correct
The engineering workstation holds the programming software and authoritative project files used to configure and download logic to controllers. Because it can rewrite control logic, it is one of the most sensitive assets in the environment.
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