PulseR

PulseR (FB)

FUNCTION_BLOCK PulseR

Short description

Edge-triggered pulse generation with adjustable duration and reset capability.

Representation

Interfaces

Inputs

Name	Data type	Value range	Initial value	Function
xIN	BOOL			Binary input (FALSE > TRUE)
tPT	TIME		T#1s	Duration of the output pulse in s
xReset	BOOL			Binary reset input (FALSE > TRUE)

Outputs

Name	Data type	Value range	Initial value	Function
xQ	BOOL			Pulse output (FALSE = Off, TRUE = On)
tET	TIME	0 … tPT		Current duration of the pulse at xQ in s

Setpoints / parameters

Name	Data type	Value range	Initial value	Function
xTest	BOOL		FALSE	Binary test input (FALSE > TRUE)

Function description

General

At the pulse output xQ is after each rising edge (FALSE > TRUE) at the binary input xIN and/or at the setpoint / parameter xTest a pulse with a duration tPT generates (conditions: xReset = FALSE and no falling edge at the input xIN). Every rising edge (FALSE > TRUE) at the reset input xReset resets the pulse output xQ immediately resets to FALSE. Every falling edge (TRUE > FALSE) at the binary input xIN resets the pulse output xQ immediately (= FALSE). The edge detection (FALSE > TRUE) on the inputs xIN or xTest has higher priority compared to the edge detection at the inputs xReset (FALSE > TRUE) respectively xIN (TRUE > FALSE). This results in, despite simultaneous edge detection, a pulse with a duration tPT is generated at the output xQ being generated. The setpoint/parameter xTest is cyclically deactivated (= FALSE).

time output tET

When the pulse output is active xQ (= TRUE) the current duration of the pulse is shown at xQ (0.0 - tPT). When the pulse output is inactive xQ (= FALSE) the value T#0s is always displayed.

CODESYS

InOut:

Scope	Name	Type	Initial
Input	xIN	BOOL
Input	tPT	TIME	TIME#1s0ms
Input	xReset	BOOL
Input Const	xTest	BOOL	FALSE
Output	xQ	BOOL
Output	tET	TIME