Counter Error -10609 "transferInProgError"

[DHumke]

I am trying to use a Quadrature Encoder VI (found on ni.com and included below) to simulate wheel speed sensors. However, when I integrate this VI into my program on a PXI-6713 card, I receive the -10609 transfer in progress error. The problem occurs when I move from Park (encoder paused) to any movement speed. I have also been able to generate the same error in the Encoder VI just by moving the knob fast. My guess is that it is trying to update the new frequencies too fast, but I don't know how to solve that. I have the settings for it at Rev/sec and set for 1 pulse/rev. In modifying the quadrature VI to my program, the loop wait time has been changed from 90 to 100 ms, but that shouldn't be a factor.

[Sastry V.]

Hello,

This is strange. I tried to run the VI and could not face any problem. But of course I had an E series card available with me. If you have an E series card could you please try to see if you get the error? I will try to check out a 6713 and try to run there too.

But my guess is, there might have been some other counter operation with the same counter going on when you ran this qudrature encoder VI. Just a thought. Double checking might be helpful.

Sincerely,
Sastry V.
Applications Engineer
National Instruments