回應： DAQmx Error: Device identifier is invalid.

[cychang0829]

I have NI-6711 DAQ card and just start learning and want to write the programs on Visual C++.
At first I find the example in default directory location: ...\National Instruments\NI-DAQ\Examples\DAQmx ANSI C.
I have added the include and library files of ...\National Instruments\NI-DAQ\DAQmx ANSI C Dev\include and  ...\National Instruments\NI-DAQ\DAQmx ANSI C Dev\lib\msvc
But when I run the example program without any code change, there comes the error message: DAQmx Error: Device identifier is invalid.
But it works successfully when I tried to use the Measurement & Automation Explorer to test the card, and output values by the panel.
It should means that I have connect the card and PC correctly.
so I am confused, do I miss any seetings before I run the C program?
 
Thanks.

ps.

sorry for I just post a same topic of unfinish writing question. I cant find a delete function to delete it.

[NI Jay]

Hi:
    There is one important thing you should check,
    the device name is your promgram must be same with the name in Measurement & Automation      Explorer. For example, if your 6711    DAQ card is named "Dev3" in Measurement & Automation     Explorer, u must use the same name "Dev3" in your program.
   

                           NITW JAY

[cychang0829]

Thanks JAY,
I only fould my device number in the columns after card name, it should be Dev1 as I thought?
there is the pics of the MAX show:

http://140.116.5.200/~e9493122/MAX.JPG

And I follow the steps which the KnowledgeBase.
http://digital.ni.com/public.nsf/allkb/7109C33AB142132E86256D9C004DD7AF

And I slove my problem, to output value by digital port when I run the Traditional example.
It means that my card is traditional driver edition, but it shuold be Ok to run DAQmx driver to this PCI 6711 card.
What should I download drivers for this card?

Thanks.

[NI Jay · Accepted solution]

HI:

 You can download the DAQmx driver in  http://www.ni.com/support/

 Before u download the driver, u must check the compatibility between your Labview
 and Windows.
 
http://digital.ni.com/public.nsf/allkb/97D574BB1D1EEC918625708100596848?OpenDocument
  

NITW AE JAY

[cychang0829]

I found "NI-DAQ Driver Support: PCI/PXI Devices" in  Knowlegebase.

http://zone.ni.com/devzone/cda/tut/p/id/6910

And I can download NI-DAQmx 8.7.1 driver for My NI-6711 card.

Thanks JAY again.