基于MCS－51的PLC数据存储系统

摘要

给出了一种基于MCS－51单片机的PLC数据存储系统的设计方案，采用自由端口模式完成PLC控制器与单片机的数据通信，利用CH376接口芯片实现单片机对U盘等移动设备的数据读写，从而将PLC控制器采集到的数据存储在U盘、移动硬盘等存储设备里，便于数据存储和使用。%This paper presents a PLC data storage systems based on MCS-51,using the free port mode to complete the PLC control er and single-chip data communication,using CH376 interface chip to realize dada read and write of U disk and other mobile devices,so the PLC control er col ected-data is stored in the U disk,mobile hard drives and other storage de-vices,and realizes of a large-capacity data storage for a long time.