Need help identifying a LabVIEW symbol

[eric_lab]

I am having trouble finding what the attached symbol is and what it does in a program that I am using.

[pincpanter · Accepted solution]

You can find this in the Synchronization palette. Its name is "First call?".

It outputs true the first time is executed, later it will output false. It's normally used to do something only on program start, vi initialization, etc..

[altenbach]

What's wrong with "right-click...help"? 😮

[billko]

Uh-oh... if you're calling nodes "symbols", you might need more help than just finding a node on a palette.  Please check out the (mostly) free training links on the first page of this forum.

[Michael_Munroe]

Another suggest:  Right-click on the item and select Visible Items -> Label.  That tells you the name.  Use Search on the top-right of the palette to find where it is located.

[eric_lab]

When re-writing a program from a screen shot I do not have the option to right click. Thank you though.

[altenbach]

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@eric_lab wrote:

When re-writing a program from a screen shot I do not have the option to right click. Thank you though.

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That would have been important to mention. 😄

When you say "... in a program that I am using", it seems to imply that you have the actual code or it would not be a usable program. You should have said "Image that I want to turn into a program" or similar.

It is typically very difficult to recreate code from an image (unless it is a "LabVIEW snippet" :D). Typically you don't have images of all cases of case and event structures, have partially hidden wires, or even image cropping. You also don't have information about e.g. express VI configurations, event configurations, default values, format settings, execution settings, etc. etc. "LabVIEW code -- to -- image" is a very lossy operation and typically irreversible except in very trivial cases. I recommend to contact the original author for the real VI.