What do you mean by step motor? For example, two-phase step motor, three-phase step motor, four-phase step motor, etc. Is it 220V?
This one, how to say, is like the three phase electricity of dynamic electricity, is an electromagnetic generation, the execution unit, the relation is equivalent. magnetic
It is not possible to do so at the moment, only each phase is directed by a certain order. Notice stepping in the name of the motor, step by step, electromagnetism is the electromagnetic relationship, electromagnetic objectivity. Stepping motor is only the tip of the iceberg. Don't feel abstruse and know the rules, you don't ask. The best don't ask such a low level question.
Said stepping motor phase number is the number of motor coil winding, two phase two sets of coil, three phase three groups namely, power supply depends on the drive circuit, not directly on the motor.
