PulseR

PulseR (FB)

FUNCTION_BLOCK PulseR

Short description

Edge-controlled 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	Pulse output duration 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 pulse duration at xQ in s

Set values / 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 a pulse is generated after every rising edge (FALSE > TRUE) at the binary input xIN and/or at the setpoint / parameter xTest with a duration of tPT generates (prerequisites: xReset = FALSE and no falling edge on the input xIN). Each rising edge (FALSE > TRUE) on the reset input xReset immediately resets the pulse output xQ immediately resets (= FALSE). Each falling edge (TRUE > FALSE) on the binary input xIN immediately resets the pulse output xQ immediately resets (= FALSE). The edge detection (FALSE > TRUE) on the inputs xIN or xTest has priority over the edge detection on the inputs xReset (FALSE > TRUE) or xIN (TRUE > FALSE) has a higher priority. This results in a pulse with a duration being generated despite simultaneous edge detections. tPT is generated at the output. xQ is 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 on xQ (0.0 - tPT ) is displayed. 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