promicon robot controller and registers

we are using a 2 axes paletising robot controlled by promicon 90 controller. this controllers program supports 9 types of boxes(9 coordinate sets) . i want to define new types (and i now how to do it logically)
but i dont know the limitations of the controller.

the coordinates are stored in P registers (px.1, px.2, pz.23 etc)
does any one know the limitations for the p registers?

and finally, all of the documents are written in german, can any one send me the documents in english?
thanks..

i found some documents from the manufacturer.
especially english documents are so useful, and there are some programs (emulator etc..) if you need, i can send them..