摘要
文章介绍了构成PLC手持编程器的主控处理器ARM7芯片S3C44B0X、CAN控制器MCP2510、CAN收发器TJA1050的基本结构及工作原理,设计了PLC手持编程器的具体通信电路。说明了S3C44B0X处理器的SIO功能;针对CAN控制器MCP2510,论述了其SPI接口指令以及时序的控制方法,重点阐述了手持编程器数据通信的软件设计方法,并实现了手持编程器与PLC之间数据的正确传输。
The article introduced constitutes PLC handhold programmer Master control proeessor ARM7 chip S3C44BOX, CAN controller MCP2510, CAN the transceiver TJA1050 basic structure and the principle of work, designed PLC to grasp the programming concrete communication circuit. Explained S3C44BOX the processor SIO function; In view of CAN controller MCP2510, elaborated its SPI connection instruction as well as the succession control method, elaborated with emphasis grasps the programming data communication the software design method, and realized has grasped between the programming and PLC the data correct transmission.
出处
《微计算机信息》
北大核心
2008年第14期139-140,255,共3页
Control & Automation
基金
广西自然科学基金资助项目(桂科基0448011)
