Question 1

When the timing of a device is not reset on a loss of power,the timing is said to be:

Accepted Answer

A)  continuous
B)  holding
C)  retentive
D)  savedE) All of the above
F) None of the above

Question 2

The instantaneous contacts of a timer have no time-delay period associated with them.

Accepted Answer

A) True 
 B)False

Question 3

For the timer circuit shown,the timer accumulated value will reset to zero whenever:

Accepted Answer

A)  input A switch is opened.
B)  input A switch is closed.
C)  the DN bit is set to 1.
D)  the EN bit is set to 1.E) All of the above
F) B) and C)

Question 4

The timer file for SLC 500 controllers is:

Accepted Answer

A)  T1
B)  T2
C)  T3
D)  T4E) B) and C)
F) A) and D)

Question 5

Normally,the reset input to a timer will override the control input of the timer.

Accepted Answer

A) True 
 B)False

Question 6

The off-delay timer (TOF) starts timing when the timer's:

Accepted Answer

A)  ladder rung switches from false to true.
B)  ladder rung switches from true to false.
C)  accumulated value equals its preset value.
D)  accumulated is greater than its preset value.E) A) and B)
F) A) and C)

Question 7

For the programmed timers shown,the output of timer T4:5:

Accepted Answer

A)  turns on after a 10-s time delay and remains on.
B)  turns off after a 2-s time delay and remains off.
C)  turns on after a 3-s time delay and remains on.
D)  is pulsed on and off at 1-s intervals.E) A) and D)
F) A) and C)

Question 8

A RES (reset)instruction must be used to zero the accumulated value in an RTO timer.

Accepted Answer

A) True 
 B)False

Question 9

RES instructions are used with:

Accepted Answer

A)  TOF timers
B)  TON timers
C)  RTO timers
D)  all of theseE) All of the above
F) None of the above

Question 10

For the timer program shown,output B is switched ON when:

Accepted Answer

A)  power is applied.
B)  input A is closed.
C)  the timer is accumulating time.
D)  the accumulated value equals the preset value.E) A) and B)
F) None of the above

Question 11

Retentive timers lose the accumulated time every time the rung condition becomes false.

Accepted Answer

A) True 
 B)False

Question 12

When addressing an RES instruction,it must be addressed to:

Accepted Answer

A)  a TOF instruction.
B)  a TON instruction.
C)  any address other than that of the RTO instruction.
D)  the same address as that of the RTO instruction.E) All of the above
F) B) and D)

Question 13

For the timer relay contact shown,when the relay coil is energized,there is a time delay before the contact opens.

Accepted Answer

A) True 
 B)False

Question 14

A TOF timer starts to accumulate time when the rung makes a true to false transition.

Accepted Answer

A) True 
 B)False

Question 15

The amount of time for which a timer is programmed is called the:

Accepted Answer

A)  Preset
B)  Desired Time
C)  Set Point
D)  Lapsed TimeE) A) and B)
F) A) and C)

Question 16

For the timer table shown,bit level addressing is used for:

Accepted Answer

A)  EN,TT,PRE and ACC
B)  EN,TT,and DN
C)  PRE,ACC,TT and EN
D)  PRE and ACCE) B) and D)
F) A) and B)

Question 17

Which instruction can best be used to turn an output coil on or off after the rung has been false for a desired time?

Accepted Answer

A)  RTO
B)  TON
C)  ON OFF
D)  TOFE) A) and D)
F) B) and D)

Question 18

The interconnecting of timers is commonly called:

Accepted Answer

A)  grouping.
B)  programming.
C)  sequencing.
D)  cascading.E) All of the above
F) A) and D)

Exam 7: Programming Timers

For the timer circuit shown,the timer accumulated value will reset to zero whenever:

Correct Answer
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The amount of time for which a timer is programmed is called the:

Correct Answer
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The off-delay timer (TOF) starts timing when the timer's:

Correct Answer
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A RES (reset)instruction must be used to zero the accumulated value in an RTO timer.

Correct Answer
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The timer file for SLC 500 controllers is:

Correct Answer
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Which instruction can best be used to turn an output coil on or off after the rung has been false for a desired time?

Correct Answer
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The interconnecting of timers is commonly called:

Correct Answer
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For the timer program shown,output B is switched ON when:

Correct Answer
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For the timer relay contact shown,when the relay coil is energized,there is a time delay before the contact opens.

Correct Answer
verified

For the programmed timers shown,the output of timer T4:5:

Correct Answer
verified

Normally,the reset input to a timer will override the control input of the timer.

Correct Answer
verified

When the timing of a device is not reset on a loss of power,the timing is said to be:

Correct Answer
verified

When addressing an RES instruction,it must be addressed to:

Correct Answer
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A TOF timer starts to accumulate time when the rung makes a true to false transition.

Correct Answer
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RES instructions are used with:

Correct Answer
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For the timer table shown,bit level addressing is used for:

Correct Answer
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Retentive timers lose the accumulated time every time the rung condition becomes false.

Correct Answer
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The instantaneous contacts of a timer have no time-delay period associated with them.

Correct Answer
verified

Exam 7: Programming Timers

For the timer circuit shown,the timer accumulated value will reset to zero whenever:

Correct AnswerverifiedShow Answer

The amount of time for which a timer is programmed is called the:

Correct AnswerverifiedShow Answer

The off-delay timer (TOF) starts timing when the timer's:

Correct AnswerverifiedShow Answer

A RES (reset)instruction must be used to zero the accumulated value in an RTO timer.

Correct AnswerverifiedShow Answer

The timer file for SLC 500 controllers is:

Correct AnswerverifiedShow Answer

Which instruction can best be used to turn an output coil on or off after the rung has been false for a desired time?

Correct AnswerverifiedShow Answer

The interconnecting of timers is commonly called:

Correct AnswerverifiedShow Answer

For the timer program shown,output B is switched ON when:

Correct AnswerverifiedShow Answer

For the timer relay contact shown,when the relay coil is energized,there is a time delay before the contact opens.

Correct AnswerverifiedShow Answer

For the programmed timers shown,the output of timer T4:5:

Correct AnswerverifiedShow Answer

Normally,the reset input to a timer will override the control input of the timer.

Correct AnswerverifiedShow Answer

When the timing of a device is not reset on a loss of power,the timing is said to be:

Correct AnswerverifiedShow Answer

When addressing an RES instruction,it must be addressed to:

Correct AnswerverifiedShow Answer

A TOF timer starts to accumulate time when the rung makes a true to false transition.

Correct AnswerverifiedShow Answer

RES instructions are used with:

Correct AnswerverifiedShow Answer

For the timer table shown,bit level addressing is used for:

Correct AnswerverifiedShow Answer

Retentive timers lose the accumulated time every time the rung condition becomes false.

Correct AnswerverifiedShow Answer

The instantaneous contacts of a timer have no time-delay period associated with them.

Correct AnswerverifiedShow Answer

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