I have a application using cDAQ-9132 RT with 9476 and 9205. 9476 is used for controlling relays and 9205 is for acquiring waveforms, and this software should running for 28 days!
At the beginning , all the control and waveforms are normal. However, from the 3rd day, the waveforms are shifting. I monitored the DAQmx DO write vi of 9476 and DAQmx AI read vi, the execution time are both shifting!! But if I restart the 9132, all become normal again!
I tried many method , including let 9132 running without relays and other accessary equipments, that is to say, just the 9132+9476+9205 is running, unfortunately, the problem still exists.
So the problem comes from the NI hardware. Then I tried update the DAQmx from 15.0.0 to 15.5.0 , the situation is improved, but still a little shifting of the time.
I want to confirm:
1. Are the execution time of DAQmx stable, normal to say;
2. Shall I upgrade to newest DAQmx --- 16.1.0 ， or will I have better stable performance?
Thanks!
