Count Pulse With USB 6008

[aludlak]

Hi, Everyone!

I have a project with USB 6008. I want to count pulse (for  exampl: count pulses from Encoder) use USB 6008. I wirite a simple with DAQmx to test. But it do't run. Please see and help me to do this exercise. I've just borrowed USB 6008 so I have not experience with USB 6008. Thanks! Funny.

[Dennis_Knutson]

duplicate post

Stop spamming the boards with duplicate questions. It just makes people NOT want to answer.

[aludlak]

Sorry, I also don't want spam but I don't know I have to post where. I really must to do this exercise early.

I written a another VI. But it not run. Please help me. Thanks everyone, Thanks Dennis Knutson reminded me.

[Dennis_Knutson]

What does 'it not run' mean? The VI does run. Are you getting an error or are the results not what you expect?

You should really have most of your code outside the loop. I don't think you want to constantly start and stop the task. Place just the DAQmx Read inside the loop.

p.s. Since you are using a counter, the most appropriate board would have been the Counter/Timer board, don't you think?

[aludlak]

Thanks Dennis Knutson!

-I  put most code outside While loop, I choose count "Dev1/ctr0" . when I click Run button, and test encoder it not display error but it have not any manifestation. I open VI Count Digital Event in example it has error - 20007.

-I conected Pulse line of Encoder with PFI0 port. it's correct ?

[Dennis_Knutson · Accepted solution]

Looking at the manual, PFI0 (pin 29) is correct and I don't see anything wrong with the code and the example should work. I've got an M-series card, not a 6008 and it works for me. That error code does not make any sense though. Are you sure that's the number?

[aludlak]

Thanks, Dennis Knutson!

I found my error, I changed my Encoder, now it run. One more time Thanks you.

Message Edited by aludlak on 06-25-2009 11:09 AM