DAQmx Digital Output task works with DAQmx Read

[ArAmM]

Can someone explain why this snippet works?

A digital output task is created and a DAQmx Read works with it, shouldn't the output task only work with DAQmx Write?

Thanks in advance

[MarkGrot · Accepted solution]

Hi ArAmM,

It is intentional.  Here's a KB with a similar code snippet explaining that this is supported.  It works because the read is returning the current value being output--it does not change the line direction.  You are still driving the line(s) in your task.