Is there a way to see if a subvi has something connected to a terminal?

[aeastet]

If I have a sub vi inside a main program and the terminal is not required. Is there a way to know if something is connected to the terminal?

[falkpl]

to test at runtime, you can set the default to some bogus value like 'nan' or -1 or empty string.  If this is still the value in the subvi you can tell if the value is still the default value and most likely not wired.  At edit time, scripting can accomplish this (not for the novice).

What are you trying to do?  The answer might debend on this.

[aeastet]

I am looking to see if something is connected and if nothing is connect I would like to have the program do something totally different than if something is connected.

[aeastet]

How would you acvcomplish this with scripting?

[falkpl]

I would probably handle it with the first method, check to see if a valid input is recieved.  You can also try making a polymorphic vi.  This is not a runtime decision branch on the code logic, wiring is done at edit time.

[Darin.K · Accepted solution]

This is very quick and very dirty, but just to give you an idea.

[falkpl]

Nice a little cleaner than my solution subvi->terms->Wire->arraysize(terms[])>0

[falkpl]

would be nice if the terminal had an iswired? properity so you did not have to look wt the wires attached to the terminals.

[tst]

---

falkpl wrote:
would be nice if the terminal had an iswired? properity so you did not have to look wt the wires attached to the terminals.

---

You mean like this?

[aeastet]

Darin.K

Where did you get these properties from. I do not see them in my version of LabVIEW?