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Owning Palette: Express VIs and Functions
Requires: Base Development System. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.
Use the Execution Control Express VIs and structures to add control and timing to VIs.
|Case Structure||Contains one or more subdiagrams, or cases, exactly one of which executes when the structure executes. The value wired to the selector terminal determines which case to execute.|
|Elapsed Time||Indicates the amount of time that has elapsed since the specified start time.|
|Flat Sequence Structure||Consists of one or more subdiagrams, or frames, that execute sequentially. Use the Flat Sequence structure to ensure that a subdiagram executes before or after another subdiagram.
Data flow for the Flat Sequence structure differs from data flow for other structures. Frames in a Flat Sequence structure execute from left to right and when all data values wired to a frame are available. The data leaves each frame as the frame finishes executing. This means the input of one frame can depend on the output of another frame.
|Tick Count||Returns the value of a free running counter in the units specified. The output and internal counter are both of the configured width.|
|Time Delay||Inserts a time delay into the calling VI.|
|Wait||Delays for a certain time interval before the output data dependence becomes valid.|
|While Loop with Stop Button||Repeats the subdiagram inside it until the conditional terminal, an input terminal, receives a particular Boolean value. When you place this While Loop on the block diagram, a stop button also appears on the block diagram and is wired to the conditional terminal.|
Refer to the Structures in the labview\examples directory for an example of using the Execution Control Express VIs and Structures.