After building application Serial Read does not work

[teslac]

Greetings,

    The vi works fine in interpreted mode but, once it is built into an application the Visa serial port read stops working(no data).

[Dennis_Knutson]

There is no such thing as interpreted mode. Do you mean the exe run on the same pc as where you have LabVIEW installed or on a different pc?

[teslac]

Sorry, I mean when I run the vi under Labview and not as an exe.

[Dennis_Knutson]

But is it on the same pc?

[teslac]

Yes, I built the exe from the vi on the same PC.

[Dennis_Knutson]

Of course you built the exe with the development system. What you still have not answered is where you are RUNNING the exe.

[teslac]

Sorry for the confution, I am running the exe on the same PC.

[Dennis_Knutson]

Thanks. What else does the VI do? Any file I/O? What sort of error message do you get?

[teslac]

There is a write to save the data to a file that is timed for every two minutes from a local variable.  The vi actually does a lot more and is used to control the temperature of a Thermal Vacuum Chamber.  All of the DAQmx works and reads back all of the TC data fine which is again periodically written to a data file.  The only thing that does not work after the build is the serial read from a vacuum gauge.  What is frustrating is that it does work before it is compile into an application.

[Dennis_Knutson]

I would suggest adding some error indicators and/or enabling debugging on the exe to see if some error is preventing the serial read from working.