Fischer panda generator connected to Cerbo

I have connected my Fischer Panda 8000i generator to my cerbo using a Fischer panda J1939 interface. I have a Fischer Panda iControl to FP Bus cable #0008899 connected to one side of the interface and an FP Bus to VE Can cable #0023441 connected to the other side of the interface and to my Cerbo VE Can port. I have set the VE Can speed to 250kb/s on the Cerbo. But it won’t find my generator as a device. My Cerbo is running V3.72 and iControl is running V P3.2.1 C 3.5.25. Has anyone done this? Am I missing something. We get the green power light in J1939 but no yellow communication light.