CyberCertPrepOT Security FundamentalsOT Fundamentals: ICS/SCADA BasicsEASYFree question
A thermocouple feeds a continuously varying voltage proportional to temperature into a controller module. This measurement enters the PLC through which type of I/O?
- A.Relay output
- B.Analog input
- C.Digital input
- D.Discrete output
Why B is correct
A continuously variable measurement such as a thermocouple's voltage is read through an analog input that converts it to a digital value. Discrete inputs only capture on/off states.
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