Recursion
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Recursion in computer science is defined as a function that includes itself as part of its definition. This means that a function calls itself as part of its execution. In LabVIEW this simply means a VI calls itself as a SubVI.
Configuration
To make a VI allowed to call itself as a SubVI it must be set to reentrant. To set a VI to reentrant:
- Open the VI Properties dialog
- Click on the Category->Execution
- Under Reentrancy radio buttons, select the Shared clone reentrant execution
- Then click OK
The VI is now set to reentrant. To use, simply drag the VI Icon to the VI's Block Diagram.