CyberCertPrepOT Security FundamentalsOT Fundamentals: ICS/SCADA BasicsEASYFree question
Ladder logic, the classic PLC programming language, derives its visual structure from which earlier technology?
- A.Object-oriented class diagrams
- B.Assembly language listings
- C.Relay-based electromechanical control wiring
- D.Spreadsheet formulas
Why C is correct
Ladder logic mimics the rungs and contacts of relay-based electrical control diagrams, making it intuitive for electricians transitioning to PLCs. Its rails and rungs visually echo hardwired relay circuits.
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