Asked by Melody Martenson on May 22, 2024
Verified
For the timer program shown, output D is switched ON when: 
A) power is applied.
B) input A is closed.
C) the timer is accumulating time.
D) the accumulated value equals the preset value.
Accumulated Value
An accumulated value is a total sum that has been gathered or added up over time, often seen in contexts such as finance, statistics, or data collection.
Preset Value
A specific value assigned in advance to control or configure the behavior of a program or device.
- Familiarize oneself with the role timers play in PLC circuits and their influence on output behavior.
Verified Answer
KA
Kashif AhmedMay 22, 2024
Final Answer :
D
Explanation :
The output D is switched ON when the accumulated value equals the preset value. This means that the timer has timed out and the desired time has elapsed. The other options (A, B, and C) do not trigger the output D, whereas reaching the preset time is the specific purpose of this timer program.
Learning Objectives
- Familiarize oneself with the role timers play in PLC circuits and their influence on output behavior.
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