A distribution control scheme used for servo system is presented,CAN bus is employed to connect the servos to CNC in the scheme,and to construct a field-bus network.

• 提出了一种伺服系统分布式控制方案,数控装置和伺服电机驱动器之间采用CAN总线连接,构成现场级的分布式运动控制网络,以实时通讯方式代替传统的并行模拟/脉冲信号,实现伺服系统的闭环控制。