Industrial Automation interview questions


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Industrial Automation interview question

1.What are the functions and features of a typical DCS?

2.Explain the operation and purpose of the processor in a typical programmable logic controller system?

3.What are the main purpose of the input and output system in a PLC system

4.List some discrete input devices typically found in process industries

5.List some of the discrete output devices encountered in industrial applications

6.List some typical analog signal values found in process applications

7.Explain the difference between volatile and nonvolatile memory

8.Which device is most commonly used to program PLCs?

9.Discuss the three basic instructions used in ladder logic programs

10.What is power flow in a relay ladder diagram ?

11.Explain the concept of logical power flow in a ladder diagrams program