I'm having the same problem.
I try to do simultaneous acquisition and generation. I have a 9012 compactrio xith 9502 & 9563 for I/O.
I try to use 2 DMA two, but I have a "Glitch", i've try to use the DMA with only 1 element, but it doen't work.
Have your vi ok finaly?
I will see your vis and send mine if they are diffrent.
Thanks in advance for your answer.
I am dealing with the CompactRIO 9074 and I have connected the 9870 up to this chassis. I am using the example virtual instrument that was recommended from James. I was able to input all of my Read_FIFO and Write_FIFO with my specific ports, and have modified the ports. When I run the FPGA program, it initializes to step 7, and then exits with the following error message: "Too many DMA channels have been requested or some requested are conflicting. The current target has 3 DMA channels." Does anyone have a fix for this? Thanks.