visa error 1073807360

[sunshine921]

Hello,

I am trying to read data from a serial device (pH/O2 meter, Polestar Tech DSP 3000) and I am getting error 1073807360 when I run my VI.  I am using the serial read/write vi on a windows 7 laptop with LabView 2009 and VISA 4.6.  When I try to run my vi on an older computer (windows xp) it works fine.  Any help on this erroe would be greatly appreciated.

Thank you,

Tatiana

[smercurio_fc]

There are various reasons for this error. Your best bet is to look over the various hits from a search.

[sunshine921]

I have looked at all the other threads concerning this error and none of them seem to apply.  I can send my code if that helps.  I was wondering if anyone had any ideas about what could be wrong in my particular situation.

Thank you,

Tatiana

[muks]

Can you post your vi?

[Dennis_Knutson]

Since your program worsks on a different pc and the error says it is a system problem, attaching your code is probably not necessary.

You don't mention if you are using an internal com port or a USB-RS232 converter. If using a converter, make sure it's driver is up to date and supported under windows 7. There is NI-VISA 4.6.2 available. Try that. The download page for 4.6 lists windows 7 but the readme does not. The readme for 4.6.2 says that support for windows 7 was added for that release. Confusing.

[sunshine921]

I downloaded VISA 4.6.2 and verified that I have the correct driver for my USB to serial adapter and I am still getting the error.  I've included my vi below.

[Dennis_Knutson]

It's silly to configure the com port over and over again. Do it once. Post back if you still get the error.

[sunshine921]

I removed the loop and I still get the error.  Can you suggest a better way for me to get the data continuously and write it into a file?

[Dennis_Knutson]

The loop was fine. It was having the VISA Config Serial Port inside that made no sense.

Since you are still getting an error, I'm not sure what else you can try. Can you communicate to the instrument with Hyperterminal?

[OttoBerge]

Were you ever able to get this vi to working? If you did could you post a copy saved in Labview 8.5. I have a DSP4000 I'm trying to get working. Thanks.