NIDAQ DIO timing

ereming's Avatar


16 Apr, 2015 07:05 PM

Hi Chris,

It's my understanding that right now, MWorks requests that NIDAQmx Base update the digital out ports with the current relevant variable values every update_interval. In the interest of increasing temporal accuracy, would it be possible to configure the NIDAQ digital output ports to change on command, rather than at a constant rate?


  1. Support Staff 1 Posted by Christopher Sta... on 16 Apr, 2015 07:29 PM

    Christopher Stawarz's Avatar

    Hi Evan,

    The digital outputs already work the way you want: As soon as the associated variable is set, MWorks requests that the output port signal be changed.

    The digital inputs are polled every update_interval, because NI-DAQmx Base doesn't provide any way to be notified when they change.


  2. 2 Posted by ereming on 16 Apr, 2015 07:30 PM

    ereming's Avatar

    Awesome, thanks!

  3. Christopher Stawarz closed this discussion on 17 Apr, 2015 01:47 PM.

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