The Logic control protocol is very similar to the Mackie protocol, and in fact the primary differences are related to LCD updates IIRC. Logic control currently supports a single surface(No extenders at this time) that supports the logic control protocol. Ryan Dixon and Rory Boylen go deep on pucks with a mix of facts and fun, leaning on a varied group of hockey voices to give their take on Considering I am one of the people with the most knowledge of the Logic control code in Ardour and Mixbus, I can clarify that a bit.