Duplicate LabVIEW vis are displayed

[mike_22]

I have a LabVIEW vi whose front panel is duplicated when called from TestStand. I just want one front panel displayed.

What's causing this is related to the vi being:

i) reentrant,

ii) automatically repositions itself to either the right or lefthand of the screen display when called.

As well there's a button on the vi that's suppsed to allow a user to exit by pressing it, but it doesn't work.

How do I fix this?

Thanks in advance.

[mike_22]

Attaching some vi's required to compile.

Versions:

TestStand: 4.2

LabVIEW: 8.6

TestStand Configuration:

Sequential Process Model

Step type: Action

[mike_22]

Please ignore all those previous attachments.  I have attached a simplified version in a zip file that should be unzipped onto your C:\ drive.

[TSJim]

In your sub-vi, the following is wired to True: Front Panel Window: Open Property (FP.Open).

From the NI help:

Front Panel Window: Open Property

National Instruments recommends you use the Front Panel: Open method instead of this property to open the front panel window.

Reading this property indicates whether the window currently is open.

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I changed it from a write only to read only and the VI behaved as I would expect. 

If you have to write to this method, would you explain your use case?

Thanks,

Jim

[mike_22]

Thanks Jim.  I have no need to write to this method.

[mike_22 · Accepted solution]

What works is removing the "Open vi Reference" call in the "VI Server - Position Window.vi" and passing a "This vi" reference to it instead.

Thanks Kelly.