CyberCertPrepOT Security FundamentalsOT Fundamentals: ICS/SCADA BasicsEASYFree question
A new engineer confuses the process variable and the manipulated variable. In a flow control loop adjusting a valve to hold a target flow, the manipulated variable is the:
- A.Operator-entered setpoint
- B.Measured flow rate
- C.Valve position output sent to the actuator
- D.Historian retention period
Why C is correct
The manipulated variable is the output the controller adjusts, here the valve position, to influence the process. The process variable is the measured flow, and the setpoint is the desired target.
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