介绍了应用PIC16f877和MCP2510实现CAn总线数据通信模块,模块内部采用SPI数据传输,并且利用fT245bl实现PC机与PIC单片机的uSb接口通信,组成一个演示系统。给出了系统结构框图与软硬件设计思路,提出了一种具有高可靠性、实时性和灵活性的CAn总线通信网络的实现方法。In this study,a module of CAN data communication using the PIC16F877 and MCP2510 is introduced.The SPI communication is used among the device in the module.And realized the USB interface communication between PC and PIC by using FT245BL,making up a show system.Give the diagram of the system's structure and the design of software and hardware,and propose a realized method about CAN bus communication network with high reliability,real-time and flexibility.福建省科技重大专项专题(2008HZ0002-1);福建省高等院校新世纪人才计划资助项