Anyone tried to control the indoor units over the F1/F1 datalink?

[matthias882]

In the last days I watches the data-messages on my databus between the outdoor and indoor-units in my multisplit-system. It looks very similar to the wired control bus.
start with 0x32, source, dest, cmd, 8bytes data, same crc-calculation and end with 0x34.
I tried to send some commands but i got no response und nothing happend with the units.

Thatswhy the question: Anyone tried before to controll several indoor-units over F1/F1 Databus?

Matthias