ARM 和 PLC 的通信:本文通过一个开发实例详细说明如何通过PLC的CAN接口与运行Linux操作系统的ARM9处理器进行数据通信。论文给出接口部分的实际电路和ARM9-Linux下驱动程序的开发过程。-ARM and PLC communication: In this paper, developed through a detailed descr iption of examples of how PLC-CAN interface with the Linux operating system running the ARM9 processor for data communications. Papers given part of the actual interface circuit and under the ARM9-Linux driver development process.