Hello all,
I'm a sort of newbie with Labview programming.
I have a loop using digital change detection of certain digital lines as its time source. In that loop,
I update the value of three digital output lines according to the value of the digital input line which are responsible for the change.
I know that the maximum change detection rate will be about 50 khz. which leads to that write tasks of the three digital outputs
has to be finished in less than 20 us. Right now, I've seen that I miss some loop iterations since my write execution time is about 150 us.
I also checked if the digital write is responsible for slow execution time. and yes, as I disable the digital write portion of my code which
leaves reading the status of digital input lines whose change is detected solely in the loop, my execution rate drops down to a 5 us.
Is this the best I can achieve with PXI card or am I doing something wrong?
My program sequence of the digital output lines is as follows:
1. Initializing the three digital output line by create virtual channel.
2. start their task.
3. write new values to them, in the loop
Any help is appreciated a lot.
