Abstract:According to the demand of practical engineering, the synchronous control program of reversible turn electric servomotor was proposed based on CAN bus. The gantry synchronous control was realized by a forward ac servomotor and a reversal ac servomotor, so as to realize single shaft movement. Through trial manufacturing of a sample machine, the control purpose for system is realized, the synchronization control error was limited within 1 mm, and its running results meet the design requirements.