pin-assignment of Zeiss CAN-bus

Hi everyone,
I am proud user of a Zeiss axiovert 200M. Now I want to add a fast
shutter from an older Zeiss, so I don't have to switch the halogen lamp
on and off all the time.
I have got two shutters 457365 (slow) and 4537370 (fast iris shutter).
I also have the wiring-diagrams and pin-assignments for these two
shutters.
The modern CAN-bus of Zeiss looks like a VGA-connector. Has anyone got
an idea of the pin-assignment here?
thanks, heini

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