LabView doesn't see USB device

[AndreasTU]

Hallo,

I have LabView 8.5 installed and two LogicBoxes (NIMbox NDL8 and NAD4) via USB connected. By typing in the proper USB-ID of NIMbox NDL8 in the

VISA everything

just worked fine. Then I realized this doesn't work for the other modul, so I tried switched cables and reinstalled the USB driver.

The current situation:

Windows XP detects the USB devices without any problem - always has. However, suddenly I can't connect in LabView with them by typing

in the USB-ID. The whole time the modules never showed up in MAX, but since they aren't NI instruments I think that was to expect anyway.

I just have no idea why it worked first partly and now it doesn't work at all.

Even though my problem description is kind of vague - I'm new to LabView. 

I would really appriciate advice, which things I should check in order to get the USB working again.

Thanks!

Nathan

[Pnt · Accepted solution]

Many have reported similar problems, even recently.

Do a little search in the forum. Search also for "serial problem"

Allthough i never had problems...

Try renaming the com ports. e.g. com1 to com3

Also install the latest VISA drivers

[AndreasTU]

The problem seemed to be solved by installing the latest VISA driver. I say "seemed", since I'm not

fully convinced yet. However, I'm glad it works now and that it was that simple.

Thank you! 

[sika]

In case you are longing for more detailed information (which I red between your lines), there is a Tutorial on USB instrument Control which seems to match your case:

http://zone.ni.com/devzone/cda/tut/p/id/4478

Perhaps you could give a feedback whether  that helped or not.

cu,

sika