I have a 1998 Cincinnati Sabre 1250 w/ A2100 that came with a Haas HRT310 rotary unit. It was not hooked up and do not know if it ever was, although it looks like it has the interface cable coiled up inside the cabinet. After reading the Haas manual, I'm even more confused and cannot get any tech help from them on hooking this to the sabre. I've used it as an indexer, with it's own control, but would like to, at least, be able to get it to index from the A2100 control; best case, semi- fourth axis. Any help from someone who has done this or if it's possible would be appreciated!! I'm going to rundown the interface cable and where it's connected today.