connecting usb 6259 to labview

[ddrop]

Hello all, sorry if this is in the wrong section of the forum. I have a USB 6259 and I'm trying to use the temperature readings I get from it in LabVIEW. I can already get it connected and get a reading from it on the Measurement and Automation Explorer, so I know it's connected. The problem is, when I was going through the tutorials for writing VI's, the tutorial prompted me to go to functions -> express -> input -> DAQ assist, but this block just isn't there. Any suggestions?

[Jonathan_S1]

Hi,

Have you downloaded and installed the most recent DAQmx drivers?  The DAQ assistant should be included in there.  If you have, are you able to see any of the other palletes?  For example, you should be able to navigate to Measurement I/O >> DAQmx - Data Acquisition.  If you are missing these, I'd suggest reinstalling the drivers.  What version of LV and DAQmx do you have?

Jon S

[ddrop]

Yeah, there's definitely some sort of error. I can't find how to uninstall/reinstall the DAQmx drivers though.

I have LabVIEW 8.5.1, and I think I have the latest drivers for DAQmx, which I found on the NI site... v9.3 maybe? Again, I can't really find this either.

[Jonathan_S1]

DAQmx 9.3 should work with LabVIEW 8.5.  To uninstall/repair any National Instruments products, including drivers, you can follow this procedure.  DAQmx should be listed as one of the items you can uninstall/repair.  In order to do the repair, you'll need your original disc, or know the location of your original installation download.  If the repair doesn't work, you might just have to redownload and insall the drivers.

Jon S

[ddrop]

Tried all this, still no DAQmx Assistant VI block. Is the DAQmx Assistant just not in my version of LabVIEW? Is there some other way of reading the signal in LabVIEW?

[Jonathan_S1]

Heres a few more thing to check.

1.  Perhaps the functions are installed and just not showing.  This can happen for a number of reasons. To confirm they are installed,  browse to your program files directory, and then browse to "National Instruments>> LabVIEW 8.5 >> vi.lib >> DAQmx" and confirm that you are seeing several .llb files there.

2.  If they are installed and not showing up, this link talks about how you can fix this issue.

3.  You are not limited to using the DAQ assistant to acquire your data.  There are several examples that show you may use the lower level DAQmx VIs to do so.  To find these, from LabVIEW browse to "Help >> Find Examples...".  This should open the NI Example Finder.  The example of interest to you will be located at "Hardware Input and Output>> DAQmx >> Analog Measurements."  These example show you how to use the DAQmx API, and its likely one of the examples will be very close to what you are trying to do.

Jon S

[ddrop]

Thanks Jon, but I just found my answer from the final comment at the bottom of this link...

http://forums.ni.com/t5/LabVIEW/daq-assistant/td-p/738367

The second thing was what was causing me problems. It seems like this should be something which LabVIEW automatically solves, not sure why I should have to add support manually.