I've got a .reg file from Novation, which revealed that third, hidden midi port of the controller.
@moss and other script creators used second port with Ableton template.
This hack might give me an ability to communicate with SL MkII via third port and gain access to user/inst/fx/mixer buttons and Speed Dial knob, which aren't available via second port.
Here's the proof:
UPD: And it does! All controls are availabe in Automap template mode (Automap button is lit)
Here we have User, FX, Inst, Mixer buttons pressed. Last three commands are from Speed Dial: touch, turn clockwise one step, untouch.