Hello,
I have a compactRIO 9074 and several C series modules; among them, NI 9205 (analog inputs) and NI 9263 (analog ouputs). I am trying to built up a simple FPGA application, mainly following the tutorial "Geeting started with compactRIO and LabVIEW". So I connected the hardware and developed a small project with an FPGA VI and a Host VI, where I try to send a signal (voltage) from an analog channel (AO0) and read it in an analog input channel (AI0) respectively. I have the 9205 analog inputs configured as RSE, +/-10V. I followed all the steps in the tutorial, however, when I run the program, the value on the analog input channels (not only AI0, but also the others) is drifting from 0 towards -10, at which point it fluctuates around this (it does't matter what I send on AO0 channel; the corresponding AI0 channel still shows the value drift down continuosly towards 0). It looks like there might be something floating, but I cannot figure it out. Just to be more clear: I have one wire from AO0 going to AI0 (signal to signal) and another wire going from COM from NI 9263 to COM of 9205. Am I doing something wrong here? Is there something I am missing? How can I get this working?
Thanks,
Bogdan
