When I start running the test bench application, the application starts but there is no communication between the PC (Dell Vostro 220 Mini Tower Desktop) and the PXI-1010 chassis (via 2 cards 8335 MXI-3). The green LEDs PWR & LINK are lit while the orange LEDs RX & TX are off. The material seems OK because: - during the communication self-test during the application startup, the RX & TX LEDs as well as the orange LED on the PC flash - and in DAQ in test mode of an input / output card (example PXI-6040E) the communication works continuously -> this seems to be a problem of soft which nevertheless has not been modified but I do not see how to launch this communication. Thank you in advance for your help. Have a good day.