I have an old Isel (1500mm x 1400mm table) with stepper motors. It is (was) controlled by Solectro P3. I have it's original cables and I can connect the P3 to my computer with Galaad. BUT I can't get steppers running. They are locked, when P3 has power on and relesed when powered off. I believe there is something wrong with the reference 24v wire connection in the motor side, but I can't figure out how it should be. Any information would be great!