Generating interrupt when using NI-DAQ 6501 (USB connection)

[Shmulik]

Hi

I am a programmer and i'm Using the NI-DAQ 6501 device with USB connection to PC in Visual C++.

I need to sample a bit field data at some port in rate of 6.5 milli seconds.

Once that Bit is change from "0" to "1" i would like the device to generate a interrupt.

Is it possible? how can i do it?

Regards

Shmulik

[Nick_F1]

Hi Shmulik,

Thank you for posting on the National Instruments forums.

What you can do is use DAQmx functions to monitor the digital line and when the digital line goes from 0 to 1 programmatically call an interrupt in windows.  If you have the DAQmx driver installed and included support for C, you can find examples programs:
C:\Program Files\National Instruments\NI-DAQ\Examples\VisualC
Or if you have Measurement Studio installed:
C:\Documents and Settings\All Users\Documents\National Instruments\NI-DAQ\Examples\DotNET1.1

You can also find resources by searching on www.ni.com where we have many resources for developing applications.

Calling an interrupt in windows through c++ is beyond the scope of National Instruments support. 

[Zyc32]

Does the usb-6501 support interrupt?The document have not Related description。why?

[Zyc32]

Usb-6501 does not have this function, You can use usb-6509 do this.