Deck 12: Controllogix Timer Instructions

Question 1

A projector fan that continues to run after the light is turned off is an example of an off-delay timer.

Answer 1

True

Question 2

Timer and counter instructions can be selected from the Timer/Counter tab on the Standard toolbar.

Answer 2

False

Question 3

The done bit is true when timer instruction is true or enabled.

Answer 3

False

Question 4

A time delay before an instruction becomes true is programmed with the ____________________ timer.

Question 5

Briefly describe the preset value (PRE) for a timer.

Question 6

What is the purpose of the TT timer status bit?

Question 7

Briefly describe how the timer timing bit controls output.

Question 8

Briefly describe RTO timer operation.

Question 9

The TON instruction is reset by making the rung go false.

Question 10

When the accumulated value and preset value are equal, the ____________________ status bit is true

Question 11

Briefly describe the three-DINT structure of a ControlLogix timer

Question 12

The three-letter abbreviation that identifies the timer instruction is the timer ____________________.

Question 13

The TOF is a nonretentive instruction.

Question 14

In order for the PAC and human operator to monitor the current timer status, ____________________ are used.

Question 15

The part of the timer that identifies the current position in the timing cycle is the ____________________.