StopWatch

StopWatch (FB)

FUNCTION_BLOCK StopWatch

Short description

Measurement of time intervals with reset capability. Display of the total time (tElapsed) and the total time before the last measurement (tMeasured).

Representation

Interfaces

Inputs

Name	Data type	Value range	Initial value	Function
xEn	BOOL			Enable measurement
xReset	BOOL			Reset of the stopwatch

Outputs

Name	Data type	Value range	Initial value	Function
tMeasured	TIME	0 … 10 days	0 days	Measured time before the last measurement
tElapsed	TIME	0 … 10 days	0 days	Measured duration since the last reset

Function description

General

This function block is used to measure individual time intervals (xEn = TRUE). The sum of the measured time intervals is shown at the output tElapsed . The sum of the measured time intervals before the last measurement is shown at the output tMeasured displayed. The sum of the measured time intervals may be a maximum of 14400 minutes (= 10 days). The active reset input (xReset = TRUE) resets the outputs independently of the other states tEleapsed and tMeasured to 0. When measurement is not enabled (xEn = FALSE) the outputs tEleapsed and tMeasured are not changed.

CODESYS

InOut:

Scope	Name	Type
Input	xEn	BOOL
Input	xReset	BOOL
Output	tMeasured	TIME
Output	tElapsed	TIME