Reading/writing digital lines without external hardware (besides daq device)

Hi,
I have a USB-6259 (mass termination). I don't have any additional hardware, just the USB device. I am trying to use the MAX utility (4.2.1) with NIDAQmx (8.5). I eventually want to program digital lines (read and write them) using the NIDAQmx API. I ran some of the VB6 samples. I thought how it works is that I could run the WriteDigChan VB code to set line(s) on or off, then use the ReadDigChan VB code to read those lines I changed. However that did not work so I started created some tasks using MAX however that does not work either. I hope this is not too stupid a question but I am not too familiar with the hardware. Do I need some additional hardware connected to my 6259 to keep those digital lines in one state or another?
thanks, David

Without regard to using it in VB, I am trying to understand the operation in MAX. I am attaching two screenshots of 2 tasks that I am using.
thanks for replying, David
Attachments:
ScreenHunter_004.jpg ‏180 KB
ScreenHunter_005.jpg ‏233 KB

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32 Digital lines read simultaneously

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Solved!
Go to Solution.

Hello Jordan, thank you for your reply.
I am sorry but I can not see or run your example, I don't use LabView, I use Visual C++ for developing.
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How to simulate a DAQ device and use it for testing applications without hardware???

how do i simulate a DAQ device
in MAX and use it for testing applications without hardware???
If my application requires inputs
from external hardware to proceed how can I simulate a DAQ device in LabVEIW?
i need to simulate several Digital inputs and Outputs to test the software. currently i dont have the hardware and DAQ device here.
please reply with your valuable suggestions.
many thanks in advance
RENN
Kudos always welcome for helpful posts
Solved!
Go to Solution.

Hi,
There is no option to simulate traditional device.You need hardware for that so i would suggest to simulate a PXI device which has similar configuration to PCI-6014 and to do a small modification to your application..

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"Doug Norman" wrote in message
news:[email protected]..
> Hello Pete,
>
> You are correct that the DAQCard-700 has no digital (or analog)
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> 3. I think this could be your best bet. If you have enough analog
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> 4. I don't understand this question.
>
> Best Regards,
>
> Doug Norman

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Hello caca,
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> To cut the story short, the 1e6 dollar question: can I set up 7 independent DO lines where (different tasks or virtual channels) where lines use same hardware timing source (eg, freqout or CO0 set to ~10kHz sampling time routed to PFI0).
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Reading/writing digital lines without external hardware (besides daq device)

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