Question 1

During normal operation of the program,the accumulated value of CTU would always be:

Accepted Answer

A)  the same as that of CTD.
B)  150.
C)  between 50 and 100.
D)  between 0 and 100.E) B) and D)
F) A) and D)

Question 2

For the 24-hour clock program,Counter C5:0 is preset for:

Accepted Answer

A)  12.
B)  24.
C)  60.
D)  120.E) A) and B)
F) A) and C)

Question 3

Up and down counters may be programmed together to count up and down.

Accepted Answer

A) True 
 B)False

Question 4

Counter C5:1 starts counting:

Accepted Answer

A)  when the accumulated value of C5:0 reaches 32,000.
B)  whenever input PB1 is actuated.
C)  whenever input PB2 is actuated.
D)  either b or c.E) None of the above
F) B) and D) B

Question 5

Normally counters are retentive.This means that if your accumulated count is up to 300 and power to your system is lost,when power is restored the accumulated count will be:

Accepted Answer

A)  000
B)  250
C)  300
D)  999E) A) and C)
F) B) and C)

Question 6

The counter accumulated value is the current count based on the number of times the rung goes from false to true.

Accepted Answer

A) True 
 B)False  True

Question 7

For the 24-hour clock program,a false-to-true transition of rung 002 increments the clock by:

Accepted Answer

A)  1 ms.
B)  1 s.
C)  1 min.
D)  1 h.E) A) and C)
F) All of the above

Question 8

For the 24-hour clock program,assume the accumulated count of Counter C5:1 is 14 and that of C5:0 is 10.The correct time of day would be:

Accepted Answer

A)  2:10 p.m.
B)  10:14 a.m.
C)  10:14 p.m.
D)  2:10 a.m.E) A) and B)
F) A) and C)

Question 9

Some PLC counters operate on the leading edge of the input signal,while others operate on the trailing edge.

Accepted Answer

A) True 
 B)False

Question 10

Output PL will be energized when:

Accepted Answer

A)  the accumulated value of C5:0 reaches 32,000.
B)  counter C5:0 is reset.
C)  the accumulated value of C5:1 reaches 32,000.
D)  the accumulated value of C5:0 and C5:1 reaches 32,000.E) None of the above
F) B) and C)

Question 11

For the PLC counter to reset,the counter reset rung must:

Accepted Answer

A)  be true.
B)  be false.
C)  be either true or false,depending on the manufacturer.
D)  undergo a true-to-false transition.E) All of the above
F) None of the above

Question 12

Every PLC model offers some form of counter instruction.

Accepted Answer

A) True 
 B)False  True

Question 13

When input PB2 is actuated:

Accepted Answer

A)  output PL is switched off.
B)  counter C5:0 is reset.
C)  counter C5:1 is reset.
D)  all of these.E) B) and D)
F) C) and D)

Question 14

The accumulated count of a CTD counter:

Accepted Answer

A)  increments with each true-to-false transition.
B)  decrements with each true-to-false transition.
C)  decrements with each false-to-true transition.
D)  increments with each false-to-true transition.E) All of the above
F) A) and B)

Question 15

For the 24-hour clock program,Counter C5:1 is preset for:

Accepted Answer

A)  12.
B)  24.
C)  60.
D)  120.E) All of the above
F) B) and C)

Question 16

The field device that will cause the counter to increment is:

Accepted Answer

A)  input PB1.
B)  input PB2.
C)  output PL1.
D)  output PL2.E) All of the above
F) None of the above

Question 17

The output Lot Full Light will be energized when the accumulated count is:

Accepted Answer

A)  0
B)  150
C)  100
D)  300E) None of the above
F) All of the above

Question 18

Encoder pulses can be counted to measure distance.

Accepted Answer

A) True 
 B)False

Question 19

The counter reset (RES)instruction,it is always given the same address as the counter it is to reset.

Accepted Answer

A) True 
 B)False

Question 20

Counters can count past their preset values.

Accepted Answer

A) True 
 B)False

Exam 8: Programming Counters

During normal operation of the program,the accumulated value of CTU would always be:

Correct AnswerverifiedShow Answer

For the 24-hour clock program,Counter C5:0 is preset for:

Correct AnswerverifiedShow Answer

Up and down counters may be programmed together to count up and down.

Correct AnswerverifiedShow Answer

Counter C5:1 starts counting:

Correct AnswerverifiedB

Normally counters are retentive.This means that if your accumulated count is up to 300 and power to your system is lost,when power is restored the accumulated count will be:

Correct AnswerverifiedShow Answer

The counter accumulated value is the current count based on the number of times the rung goes from false to true.

Correct AnswerverifiedTrue

For the 24-hour clock program,a false-to-true transition of rung 002 increments the clock by:

Correct AnswerverifiedShow Answer

For the 24-hour clock program,assume the accumulated count of Counter C5:1 is 14 and that of C5:0 is 10.The correct time of day would be:

Correct AnswerverifiedShow Answer

Some PLC counters operate on the leading edge of the input signal,while others operate on the trailing edge.

Correct AnswerverifiedShow Answer

Output PL will be energized when:

Correct AnswerverifiedShow Answer

For the PLC counter to reset,the counter reset rung must:

Correct AnswerverifiedShow Answer

Every PLC model offers some form of counter instruction.

Correct AnswerverifiedTrue

When input PB2 is actuated:

Correct AnswerverifiedShow Answer

The accumulated count of a CTD counter:

Correct AnswerverifiedShow Answer

For the 24-hour clock program,Counter C5:1 is preset for:

Correct AnswerverifiedShow Answer

The field device that will cause the counter to increment is:

Correct AnswerverifiedShow Answer

The output Lot Full Light will be energized when the accumulated count is:

Correct AnswerverifiedShow Answer

Encoder pulses can be counted to measure distance.

Correct AnswerverifiedShow Answer

The counter reset (RES)instruction,it is always given the same address as the counter it is to reset.

Correct AnswerverifiedShow Answer

Counters can count past their preset values.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
B

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
True

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified