I would assume that it uses the Apex "variable speed" port. If it does I have experience programming a Tunze 6055 powerhead and I can't imagine the programming between the two would be all that different. Before I dump my own knowledge out here though you might want to check out this video I found....
Help Programming IceCap Gyre in Apex Controller
Let me know if that video is not what you need and I'll be glad to help you out myself.
Josh