Problems with PCI-6220

[pincpanter]

Hi Labviewers,
I'm using a a PCI 6220 card for AI and having some troubles (LabView 7.0 / XP on industrial PC / DAQ-mx 7.4 but I also tried with other versions).

1) the card is not "plug'n'played", at least not completely; it's recognised as a NI card, but with no model: I need to reinstall the driver and let XP to search automatically the correct driver to have it working
2) my program works well if manually launched, but doesn't acquire data when launched at Startup; in this last case, after the program is closed, MAX is not able to access the card (it cannot even reset it!), moreover, restarting/switching off the PC does not help: the only way to get the card working again is to completely uninstall the driver and reloading it!

I found a workaround, though: keeping the program into the Startup folder, I delayed launching by some seconds.

Has anyone seen something similar?

Paolo

[AlessioD]

I think you found the answer yourself by delaying the startup of your application.

1) my suggestion is to always use the latest Driver. NIDAQmx 8.1 is out and available for free download.

2) There might be something related to your specific HW that shows this behaviour. Basically, the driver is loading up sometime after the app has started. This means that when the DAQmx functions are called, the driver has not yet gotten hold of the PCI-6220.
Try and change the PCI Slot for the card and see what happens. Anyways, adding a few seconds of delay at the beginning of your application may just do the trick.

3) Also, did you check if your PCI bus is supplying 3.3 V as well as 5V on the rails?

AlessioD

[pincpanter]

Thank you for your answer, AlessioD. I'll try with the latest drivers, if I'll have enough time (this system will be shipped soon).
PCI voltages seem to be OK.

Paolo

Message Edited by pincpanter on 06-12-2006 09:52 AM