Hi, I think my toolchanger is the same. I have a Denford Orac. You will need 3 inputs for the opto sensors, be careful with connections as the voltage going to the turret is 24v so you will need some electronics to get down to TTL levels.
I have attached my toolchanger macro that operates my toolchanger, have a look and perhaps Hood could help you make it better as it was my first attempt at macros, it does work I have been using the lathe pretty much every day for the last 6 years but now and again during a toolchange Mach seems to forget which tool it needs and the changer just spins aimlessly until I intervene. I have never sorted that and as it happens only once in a blue moon it is more bothersome than annoying but I would like to know why.
Hope this is of some help