Is Value Changed VI

LabVIEW 2018 Help


Edition Date: March 2018
Part Number: 371361R-01
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Owning Palette: Comparison Functions

Requires: Base Development System

Returns TRUE if this is the first call of this VI or if the input value is different from the value when this VI was last called.

Example

value specifies the value to check. This input accepts any data type.
changed or first call? returns TRUE if this is the first call of this VI or if the value changed since the last time this VI was called. Otherwise, this output returns FALSE.

Example

Refer to the Malleable VIs Basics.lvproj in the labview\examples\Malleable VIs\Basics directory for an example of using the Is Value Changed VI.

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