Dear all, I have been working on "Retriggerable buffered counting edge task" on a single counter input channel, let me describe what I want to achieve: Create a CI to count finite rising edges with external sample clock (eg. Dev1/di/SampleClock) at certain sampling rate, and set CI.edge.Term at one PFI which is hardwired to another digital input channel. Furthermore, I'd like to set "retriggerable start trigger" to this CI by another PFI line. It turns out that I can only set "arm start trigger" on this counter input channel, instead of "start trigger" since the error of 200452: attribute not supported in task context showed up at configuring digital edge start trigger. It seems that I can only set "retriggerable start trigger" on counter output task, and use two counters to achieve above, but I was wondering if there is a way to accomplish by single counter. Any suggestion is highly appreciated.

Set the CI task to be continuous--it will only take samples when the finite DI task is triggered which is effectively the same thing as having a finite retriggerable CI task. If you want the count to reset each trigger, you could configure the trigger input as a count reset line as well. Best Regards,

Counter/Timer

Retriggerable buffered counting edge task

Solved!

Author

In fact, you are right. The error goes away when I increase the buffer size.

Thank you very much.

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Counter/Timer

Retriggerable buffered counting edge task

Re: Retriggerable buffered counting edge task