Delta Electronics DVP15MC11T, Operation Manual

Page: 114 / 601

Chapter 8 Logic Instructions
8_

Programming Example

The variable table and program
Variable name Data type Initial value
TOF1 TOF
TOF1_EN BOOL FALSE
TOF1_In BOOL FALSE
TOF1_PT TIME
TOF1_Q BOOL
TOF1_ET TIME

Timing Chart:
Case 1
：
TOF1_PT is the set time for off delay. When TOF1_In is TRUE, TOF1_Q is TRUE. When
TOF1_In is FALSE, the timer starts to measure the time. When the value of TOF1_ET
equals the setting value of TOF1_PT, TOF1_Q is FALSE and the timer stops timing.
Case 3
：
When TOF1_In changes from TRUE to FALSE, the timer starts timing. When current
time (TOF1_ET) is less than the set time (TOF1_PT) and TOF1_In is set to TRUE,
TOF1_ET is reset and the state of TOF1_Q does not change.
1
TOF
EN ENO
In Q
TO F1
P T
TO F1 _EN
TOF1_I n
TO F1_PT
TOF1_Q
ET TOF1_ET
TOF1_In
TOF1_Q
TO F1 _ET
TOF1_PT
Cas e 1 Cas e 2
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