Following this thread closely. If you two can decode this, I'll write a driver for Control4.
FWIW, you guys probably know this, but I saw a reference that the control bus for the 8 port communications hub uses RS485. I have this hub in my system, it appears to come standard on the Grandee with an ACE system installed. This is a brand new system that just arrived today, so if I can be of any assistance, let me know.