polling input

[maccapple]

Thanks. I tried this but it gives me 

Error -201020

Lines specified do not support change detection. Select lines that support change detection.

This is from REG Events.

The line I am selecting is an input line which I use all the time for polling.

Sorry probably I have to do some more homework but if you have some quick solution I'll appreciate

[mcduff]

You will have to look at the specs for your board. It's quite possible that the Change Detection Event is not supported by your board. X-series boards only support change detection on digital port 0 pins.

mcduff

[maccapple · Accepted solution]

Yes . I am using port 0 but the module is 9375 .I found this list from net and this module is not included in this list. Prabably I have to ask my company to buy one in that case.Thanks for your support

3. DAQmx Hardware that Supports Change Detection

The following National Instruments devices support change detection with NI-DAQmx, version 8.0 and later:

• Industrial DIO
  • NI 6509
  • NI 6510
  • NI 6511
  • NI 6514/6515
  • NI 6518/6519
  • NI 6528
• High-Speed DIO
  • NI 653X
• Some M Series (Port 0 ONLY)
  NOTE: USB Bus-Powered M Series devices like the USB-6210 and USB-6211 and our Industrial M Series cards (NI 623x) do NOT support change detection.  However, USB High-Performance, PCI M Series, and PXI M Series devices DO support change detection.
• X Series
• C Series
  
  • NI 9401
  • NI 9402
  • NI 9411
  • NI 9421
  • NI 9422
  • NI 9423
  • NI 9435