F_Trig - Delta Electronics DVP15MC11T Operation Manual

8.3.2

F_TRIG

FB/FC
FB F_TRIG is used for the falling edge trigger.

Parameters
Parameter
Meaning
name
Input
CLK
signal
Output
Q
signal
Bit string
●
CLK
●
Q
Note:
The symbol ● indicates that the parameter is allowed to connect to the variable or constant of the data type.

Function Explanation
When CLK of F_TRIG changes from TRUE to FALSE, Q output is TRUE for only one period. In other
circumstances, Q is FALSE.

Precautions for Correct Use
Q will have no output until the falling edge signal at CLK is detected.

Programming Example

The variable table and program
Variable name
F_TRG
F_TRG_EN
F_TRG_CLK
F_TRG_Q
Explanation
F_TRIG _inst ance
F_TRI G
EN
CL K
Input/
Description
Output
Input Falling edge trigger signal
Output Output for a period
Integer
F_TRI G
F_TRG_EN EN
F_TRG_CLK CLK
E NO
Q
TRUE or FALSE
TRUE or FALSE
Real
number
Data type

F_TRIG

BOOL
BOOL
BOOL
F_TRG
1
E NO
Q
F_TRG_Q
Chapter 8 Logic Instructions
Applicable
model
DVP15MC11T
Valid range
Time, date
Initial value
FALSE
FALSE
8_
8-9