How to connect a digital signal to a notifier?

[andreas_nilsson]

I'd like to connect a digital signal to a notifier. I have a PXI time&sync card with a digital connector PFI0. I alreday use that as trigger input in a DAQmx task. But I want to use it for triggering one more, purely software thing in my application. How do I connect that PFI0 to a notifier, occurence or similar, in order to do a certain thing when PFI0 signal goes from low to high? Should I perhaps use NI Sync, NI DAQmx, or...?

Many thanks in advance,

/Andreas

[mcduff]

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@andreas_nilsson wrote:

I'd like to connect a digital signal to a notifier. I have a PXI time&sync card with a digital connector PFI0. I alreday use that as trigger input in a DAQmx task. But I want to use it for triggering one more, purely software thing in my application. How do I connect that PFI0 to a notifier, occurence or similar, in order to do a certain thing when PFI0 signal goes from low to high? Should I perhaps use NI Sync, NI DAQmx, or...?

Many thanks in advance,

/Andreas

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Depending on your hardware, your DAQ board may support DAQmx Digital events. When used, a change in your digital state can trigger an event, not necessarily a notifier but the event trigger can be used as software trigger.

[andreas_nilsson]

Thank you! However, PFI0 is not in the list of my DAQmx physical channels. There are only my eight AI channels on the PXIe-4300 card.

The digital signal PFI0 is on my NI PXI-6683H timing & sync module. The PXI-6683H can be controlled using the NI Sync driver, rather than the DAQmx driver, I think.

[mcduff · Accepted solution]

If using a 6683, you could set up a timestamp trigger and use that for your notification. Look in the example finder for a timestamp trigger; once you get the trigger send your notification.

[andreas_nilsson]

Ah, thanks a lot!

I thought there must be a way to somehow have the software react on a digital input signal event, but could not figure out how.