Attached is a VI that attempts to drive a timed loop with a NI 6608 card pulse train. My timed loop never appears to run more than one cycle. No errors are reported. I suspect it is because I am not setting up correctly with NI-DAQ. Any help would be most appreciated.WB

Hi Wb, Taking a closer look at the Timed Loop, I can see that the period dt value is set to 1000. This period is scaled based on the units of the timing source. In this case, the clock contains 0.5 second pulses. Altering the dt to a value of 2 allowed me to see the timed structure iterate as expected. See the image below for further detail: Hope this helps. Let me know if this does not behave that same way on your system. Cheers!

Timed Loop runs only once with pulse train?

Author

Your solution works. I never would have figured it out. Thanks.

WB

Message 11 of 13

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Hello,

I am new to labview, I would like to know how can I control a timed toop with a high frequency ttl signal. a vi would be appreciated.

thanks

John

Message 12 of 13

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@jmrlauc wrote:

Hello,

I am new to labview, I would like to know how can I control a timed toop with a high frequency ttl signal. a vi would be appreciated.

thanks

John

You need to start your own question on this fourm and not hijack this one.

Tim
GHSP

Message 13 of 13

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LabVIEW

Timed Loop runs only once with pulse train?

Re: Timed Loop runs only once with pulse train?

Re: Timed Loop runs only once with pulse train?

Re: Timed Loop runs only once with pulse train?