PLC Review Questions
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PLC Review Questions
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25 Questions

1. The rung condition and the OTE instruction on that rung or false if no logical continuity path has been established

2. For the AC discrete input module circuit schematic what is the purpose of the optical isolator

3. CPU or processor

4. selector switch operator

5. ultrasonic sensor

6. A parity bit

7. What is the identifying number in the model number that established the modules are compatible with the Allen - Bradley SLC - 500 family

8. In order to read I/O for a project what must you do first?

9. an analog signal...

10. An analog I/O module

11. '1' indicates

12. The examine if open instruction:

13. If the module is a current-sourcing module then the

14. The location of a specific input or output field device is identified by the processor by means of its...

15. Gray code

16. Programmed latching circuits are retentive. This means that if power is interrupted the output will _____ when power is returned

17. An AND gate operates on the same principle as a

18. Nominal Input Voltage

19. Input Impedance and Capacitance

20. Sequential function chart

21. Combination I/O modules

22. Random Access Memory (RAM)

23. The function of the CPU is too...

24. stepper-motor module

25. Input Protection