Question 1

A CTD counter will cause the accumulated value to ____ when there is a false to true transition of the counter rung.
A)reset to zero
B)increase by one
C)decrease by one
D)remain the same

Accepted Answer

A CTD (Count Down) counter decreases its accumulated value by one with each false to true transition of the counter rung.

Question 2

The ControlLogix CTD instruction is typically used with a CTU instruction that references:
A)the same counter structure.
B)a different counter structure.
C)the same data table.
D)a different data table.

Accepted Answer

The ControlLogix CTD (Count Down Timer) instruction is used to decrement a timer value. It is typically used with a CTU (Count Up Timer) instruction that references the same counter structure, so that the program can track the elapsed time between two events. Therefore, the best choice is A, which corresponds to the same counter structure.

Question 3

A counter counts the change of state of an external trigger signal.

Accepted Answer

A counter is designed to count the number of pulses or changes in a signal. An external trigger signal can be used to initiate or advance the counting process. Therefore, a counter can count the change of state of an external trigger signal.

Question 4

A counter retains its Accum value if the rung goes false.

Accepted Answer

This is true. When the rung of a counter goes false, the counter retains its Accumulated value until a new rung goes true and resets the counter.

Question 5

The acronym CTU stands for a count- up counter.

Accepted Answer

The answer of The acronym CTU stands for a count-...

Question 6

For the counter instruction shown,what is the counter's tag name? 
A)Count Up
B)Package_Counter
C)Preset
D)Accum

Accepted Answer

The answer of For the counter instruction shown,what is the...

Question 7

The counter Accum value is reset to zero by a:
A)RES instruction with a different tag name.
B)RES instruction with the same tag name.
C)true to false transition of the counter rung.
D)false to true transition of the counter rung.

Accepted Answer

The RES (Reset) instruction resets the accumulated value of a counter to zero when it is addressed with the same tag name as the counter. This allows for the counter to be reset based on specific conditions in the program.

Question 8

For the counter instruction shown,which parameter specifies the value the counter must reach before the done bit turns on? 
A)Count Up
B)Package_Counter
C)Preset
D)Accum

Accepted Answer

The parameter that specifies the value the counter must reach before the done bit turns on is the Preset value. This allows the user to set a specific target value for the counter to reach before it indicates that it has completed its counting task.

Question 9

The two basic counter types are the right-counter and the left-counter.

Accepted Answer

The two basic counter types are the up-counter and the down-counter.

Question 10

All counters are non-retentive.

Accepted Answer

Some counters are designed to be retentive, meaning they retain their count value even after a loss of power or when the controlling device is reset.

Question 11

The acronym CTD stands for a count- down counter.

Accepted Answer

The answer of The acronym CTD stands for a count-...

Question 12

Counters count:
A)true-to-false transitions of the counter rung.
B)false-to-true transitions of the counter rung.
C)the length of time a counter rung is true.
D)the length of time a counter rung is false.

Accepted Answer

Counters count false-to-true transitions of the counter rung. This is because counters typically increment or decrement when their input transitions from false to true.

Question 13

For the counter instruction shown,which parameter indicates the number of transitions of the counter rung? 
A)Count Up
B)Package_Counter
C)Preset
D)Accum

Accepted Answer

The answer of For the counter instruction shown,which parameter indicates...

Quiz 18: Controllogix Controllers - Part 4 - Programming Counters

A CTD counter will cause the accumulated value to ____ when there is a false to true transition of the counter rung.

The ControlLogix CTD instruction is typically used with a CTU instruction that references:

A counter counts the change of state of an external trigger signal.

A counter retains its Accum value if the rung goes false.

The acronym CTU stands for a count- up counter.

For the counter instruction shown,what is the counter's tag name?

The counter Accum value is reset to zero by a:

For the counter instruction shown,which parameter specifies the value the counter must reach before the done bit turns on?

The two basic counter types are the right-counter and the left-counter.

All counters are non-retentive.

The acronym CTD stands for a count- down counter.

Counters count:

For the counter instruction shown,which parameter indicates the number of transitions of the counter rung?