1.4 PRACTICE PROBLEMS
1. Documentation of a PLC Ladder Logic program requires:
a) A copy of the uncommented Ladder Logic Program
b) A copy of the commented Ladder Logic program
c) A copy of the commented Ladder Logic program and a listing of the
inputs/outputs and their addresses
d) None of the above
(ans. c)
2. TRUE / FALSE -- When planning Ladder Logic, the inputs/outputs should be chosen before anything else.
(ans. true)
3. List 5 advantages of using structured design and documentation techniques.
ans.
- more reliable programs
- less debugging time
- more routine
- others can pick up where you left off
- reduces confusion