When is the timer-timing bit of a timer instruction true

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Reference no: EM131371836

1. State three advantages of using programmed PLC timers over mechanical timing relays.

2. For a TON timer:

a. When is the enable bit of a timer instruction true?

b. When is the timer-timing bit of a timer instruction true?

c. When does the done bit of a timer change state?

Reference no: EM131371836

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