4k camera over fiber both ways

I am looking at running 2 x Black Magic 4K camera's over fibre using their converter boxes.
I also need to return feed to do CCU control.

Can the BMD cameras receive ccu data as 1080 (HD) return and still send 2160 (UHD) back to the ATEM 4K?

So that would be

[ATEM] >>>>>> (1080) >>>>>> [BMD camera] (for CCU data and return viewfinder)
[ATEM]<<<<<< (2160) <<<<<< [BMD camera] (main camera output and viewfinder)

Sam

[Gary Adams]

Yes. In the case of the URSA Minis, make sure the frame rate is the same for both signals. They may not need the same frame rate for CCU but to see the return video in the viewfinder.

Regards, Gary