StopWatchExt (FB)¶

FUNCTION_BLOCK StopWatchExt

Short Description¶

Measurement of time periods with plus-/minus-Input and reset option

Display of the total time (tElapsed) and the total time before the last measurement (tMeasured).

Portrayal¶

Interfaces¶

Inputs¶

Name
Datatype

Range

Init-Value

Function

xUp BOOL
Enable increase in measurement time

xDown BOOL
Enable decrease in measurement time

xReset BOOL
Reset stopwatch

Outputs¶

Name
Datatype

Range

Init-Value

Function

tMeasured TIME
0 Days

0 .. 10 Days

Measured time before the last measurement

tElapsed TIME
0 .. 10 Days

Time measured since the last reset

xTimeError BOOL
Display of a stopwatch error

Functional description¶

General¶

This function block is used to measure individual time periods.
The counter is increased if the input xUp is active.
The counter is decreased if the input xDown is active.
The xUp input takes precedence over the xDown input.
The sum of the measured time periods is displayed at output tElapsed.
The sum of the measured time periods before the last measurement is displayed at the output tMeasured.
The sum of the measured time periods may not exceed 14400 minutes (= 10 days).
The input xReset (xReset*= TRUE) resets the outputs *tEleapsed*and *tMeasured to 0 regardless of the other states.
Bei nicht freigegebener Messung ( xUp = FALSE und xDown = FALSE ) werden die Ausgänge tElapsed und tMeasured nicht verändert.

Different reaction to one edge at the reset input xReset

Input xUp = TRUE:
Each edge at the reset input resets the outputs tElapsed and tMeasured to 0. The counter then increases again continuously.

Input xDown = TRUE:
Each edge at the reset input resets the outputs tElapsed and tMeasured to 0. The Counter doesn’t change.
Die Fehleranzeige xTimeError wird aktiviert, solange der Eingang xDown in diesem Zustand TRUE verbleibt.

Error output xTimeError¶

xTimeError is used to show Errors. (xTimeError = TRUE)

State
xTimeError

No Error
FALSE

Measurement time greater than or equal to 14400 minutes
TRUE

Messzeit kleiner 1ms und Eingang xDown = TRUE TRUE

Visualization¶

Information¶

Element
Authors

Date
Version
Note

Function
Adam Bartod 01.2017 1.0
Initial version

Programming
Adam Bartod 01.2017 1.0
Initial version

Test Jochen Reu / 02.2017 1.0
Initial version

Documentation
Jochen Reu 10.2017 1.0
Initial version

Codesys¶

InOut:

Scope	Name	Type	Comment
Input	xUp	BOOL	Enable increase in measurement time
	xDown	BOOL	Enable decrease in measurement time
	xReset	BOOL	Reset stopwatch
Output	tMeasured	TIME	Measured time before the last measurement
	tElapsed	TIME	Time measured since the last reset
	xTimeError	BOOL	Display of a stopwatch error