NI-6514 - DAQ Task - Error 200077

[rrobert]

I'm trying to create a simple task that outputs a 50 Hz step function for either N samples or continuously, it doesn't matter at this point. 

I seem to get this error for any Generation Mode or Clock Setting when I click Test.  What am I missing?   

[Elizabeth W]

Hello,

Actually, it looks like the problem is that you are trying to do a hardware timed generation with a board that does not have timed digital I/O.  The 6514 has static digital I/O only, which means that you are confined to using 1 Sample (On Demand).  If you would be interested in recommendations on a board that does have hardware timed digital I/O then please let me know what your needs are as far as channel count, isolation, etc., and I can make a recommendation for you. 

You can create a program that does software timed digital output if you do not need a very fast update rate.  However, this is not recommended because the timing will not be deterministic unless you are on a real time OS.

I hope this helps, let me know if you have any questions.