CanBus Fendt armrest

We have a Fendt Katana armrest, which we want to use on a new machine build by ourselves.
The armrest send 4 different CAN messages:

1: id: 0x613, data: 0xFE 0xFF 0x87 0xFA 0x3A xx xx xx (last 3 bytes are used as counter)
2: id: 0x613, data: 0xFE 0xFF 0x87 0xFA 0x7A xx xx xx (last 3 bytes are used as counter)
3: id: 0x613, data: 0xFE 0xFF 0x87 0xFA 0xBA xx xx xx (last 3 bytes are used as counter)
4: id: 0x613, data: 0xFE 0xFF 0x87 0xFA 0xFA xx xx xx (last 3 bytes are used as counter)

The messages don’t changes when pressing buttons, moving joysticks or levers.

Does anyone know how to active the armrest to send data when pressing buttons, moving joysticks or levers?

Thanks