为提高数控机床的联网控制和集成运行能力 ,对具有网络通讯和网络控制功能的新一代数控系统进行了研究 ,提出一种基于新型控制局部网—现场总线CAN的网络数控系统的总体结构 ,给出了网络通讯和控制的硬件方案 ,介绍了网络通讯和控制的软件设计。所开发的系统已成功用于多种数控机床的联网控制和集中管理 ,取得良好效果 In order to improve the networking control and integrated operation ability of CNC machine tools, a new generation of CNC system with network communication and network control functions is studied, and a new type of NC system based on the new control local area network-field bus CAN is proposed. Out of the network communication and control of the hardware program, introduced the network communication and control software design. The system has been successfully developed for a variety of CNC machine tools networked control and centralized management, and achieved good results