visa errors

[KTaschner]

When I try to use the IO Assistant Express VI ... I can configure and talk to my instrument just fine but when I try and run the VI I get thye following error.  Error - 1073807246 occured at Property Node (arg 1) in Untitled 1:Instance:0->Untitled 1 ... Possible reason(s): VISA: (Hex 0xBFFF0072) The resource is valid, but VISA cannot currently access it.

I have tried everything I can think of with no success.  Anyone have any ideas?

[RavensFan]

Does some other program besides LabVIEW have the serial port open?

[KTaschner]

No there is no other device using the COM port.  I have also tried using hyperterminal to confirm the the device indeed works.

[RavensFan · Accepted solution]

Did you close hyperterminal?  Or at least close the com port in hyperterminal?

I asked "is any other program using the com port".  I did not ask "is any other device using the com port."

[KTaschner]

I am also a Ravens fan.  No other program is utilizing the COM Port.

[RavensFan]

It's always good to hear from another Ravens fan.

You marked the thread as solved.  Was that it?

If not, then search for the error number on the forums.  (Leave out the negative sign on the search.)  There are numerous other threads.  Usually the problem is some other program leaving the port open.  But there are occasionally other odd explanations.

[KTaschner]

No the problem HAS not been solved and I would appreciate your continued support.

[KTaschner]

Mr. Raven

It is LabVIEW not closing the COM port when it has finished running.  Do you know what I need to do close the port when it is finished?

[RavensFan]

Okay,  then go to my message that you marked as the solution.  Go to the options menu to the upper right and select "Unmark as solution".  If is it marked as solved, there may be some people who might skip over the thread who might otherwise help.

I don't have any other ideas.  Other than rebooting and try again.

Beyond that, sift the the message threads in http://forums.ni.com/t5/forums/searchpage/tab/message?location=Board%3A170&q=1073807246#message-list

[dkfire]

How are you starting and stopping your vi ??

Try posting your vi sp we can take a look.

And it might by a good idea to shift to regular vi's.

These Express vi's are good to some level, but a some point you are better off.