Trig

Trig (FB)

FUNCTION_BLOCK Trig

Short description

Edge detection on a binary input signal. Pulse generation on rising / falling or both edges.

Representation

Interfaces

Inputs

Name	Data type	Value range	Initial value	Function
xIn	BOOL			Binary input signal

Outputs

Name	Data type	Value range	Initial value	Function
xTrigH	BOOL			Pulse output for rising edges
xTrigL	BOOL			Pulse output for falling edges
xTrig	BOOL			Pulse output for rising / falling edges

Function description

General

The binary input signal xIn is continuously monitored for rising and falling edges. On each rising edge, a pulse with a duration of one program cycle is generated at the output. xTrigH a pulse with a duration of one program cycle is generated at the output. On each falling edge, a pulse with a duration of one program cycle is generated at the output. xTrigL a pulse with a duration of one program cycle is generated at the output. On each rising / falling edge, a pulse with a duration of one program cycle is generated at the output. xTrig a pulse with a duration of one program cycle is generated at the output.

CODESYS

InOut:

Scope	Name	Type
Input	xIn	BOOL
Output	xTrigH	BOOL
Output	xTrigL	BOOL
Output	xTrig	BOOL