NI Instruments USB 6251 - Edge Counter

9 次查看（过去 30 天）
Christos
Christos 2012-4-1
Hi all!
I am trying to get the Edge Counter value from ni usb 6251 data aquisition card using analog session based interface in MATLAB R2011b. I always get the value zero from variable count. I have written the following code:
ai = analoginput('nidaq','Dev1');
hwinfo = daqhwinfo(ai);
hwinfo.DifferentialIDs;
hwinfo
daq.getVendors();
s = daq.createSession('ni');
s.addCounterInputChannel('Dev1','ctr0','EdgeCount');
count = s.inputSingleScan;
count
I have been used the driver software and i got the Edge Counter value successfully.
Thank you a lot.

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回答（1 个）

Christos
Christos 2012-4-10
I have found the answer from myself. the defualt bin is PFI8 and i used PFI7 so i changed the wire to correct bin on ni board
Thanks a lot

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