31.12 ASSIGNMENT PROBLEMS

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1. What documentation is requires for a ladder logic based controller? Are comments important? Why?

2. When should inputs and outputs be assigned when planning a control system?

3. Discuss when I/O placement and wiring documentation should be updated?

4. Should you use output forces?

5. Find web addresses for 10 PLC vendors. Investigate their web sites to determine how they would be as suppliers.