Boyan, I never noticed there were different manuals. The GSK site stopped loading for me, however I got an Installation and Connection manual from the cncmakers website.
I've had a quick scan through it, and it seems to contain the necessary info, other than where to download the software :-/

Komatias, the SZGH/CNC1000 manual I mentioned earlier has a bit about the two types of tool changers at the end, however as I mentioned, it's not exactly clear as to what they're requirements are. Going by what I understand of the manual, it's aimed at certain changers which must be commonly fitted to machines.
Care to share some more info on what you're fitting one to?