Error -89215: occuring at DAQmx Start Task

[reuvengomes]

Hey guys,

Really need your help with this. I've combined two VIs that I have, one measures in cylinder pressure and the other measures time between encoder pulses. Both were perfectly well individually but when combined together, give me this error when I run the VI. I've attached the VI below and pics of the error. Can anyone shed light as to how I can fix this?

Both use encoder B pulses as external clock source and the Z signal as the trigger to start acquisition. 

Please help!

[reuvengomes]

Also, I have a 6040E daq card that I use for the pressure acquisition part and a 6601 timing card that I use for the period measurement.

[Kevin_Price · Accepted solution]

I posted an example in your other related thread which demonstrates how I would merge these two tasks.  Follow this link.

The error you're getting relates to an attempt to have one board use timing signals from the other board.  This can be done if you connect them via RTSI cable and then go to MAX to configure that RTSI connection.

Alternately, the post I linked should avoid that error b/c it assumed you'd use the counter(s) on the same 6040E card where you have your AI task. 

-Kevin P