anybody succeeded in obtaining an injection current profile using NI 9751?

Hi guys,

We use NI 9751 DI driver connected to cRIO-9074 to drive an solenoid injector on an engine. We can indeed inject fuel, but the current profile is never updated, always stays at the default waveform, even though we changed the current value.

Basically we copied the example program of NI, "NI 9751 (DI) - RevF5.lvproj". We also found that the lower while loop in the attached graph (RT) never executed. We have clicked the "scope on" in the express vi in FPGA. We have also switched on "DIScopeRefresh", "DIScopeRead".

here I would like to ask, is there somebody already worked this out and can give some hints? I know it will not update every time but i wonder why it seems like never worked.

thanks a lot,

Ming