CAN 作为一种可靠性高、价格低廉、技术成熟、实现简单的现场总线技术在众多领域得到了广泛的应用。本文以智能I/O 站点的设计为例介绍了CAN 总线技术在数控系统中的应用。 关键词 CAN 总线 智能I/O 89S52 A Design of Intelligent I/O Station Basing on CAN Bus Tan Jianbo Xie Chuan Shi Zhongdong Yan Wentong Mu Xin Wu Xiwen Wang Jianhua Abstract CAN is a kind of excellent field bus with high reliability, low cost, and have been applied in many fields. In this paper, it will be introduced that CAN bus technology is used in CNC system with a example of designing an intelligent I/O station. Keywords CAN Bus Intelligent I/O 89S52