关键词：STM32；SCADA；RTU模式；RL-ARM；Web服务器
摘 要：For the supervision and control on the unattended electromechanical equipments,this paper applies industrial Ethernet technology to the design of RTU (Remote Terminal Unit) in SCADA (Supervisory Control And Data Acquisition) system.The hardware design of RTU is centered on STM32F107VC,which includes network communication interface,I/O (Input/Output) interface and local memory circuit.The software design,based on the midware of RL-ARM provided by ARM Ltd,comprises multi-task network communication,web server for remote configuration and file system for temporary data storage.The applications show that this intelligent RTU has properties of high reliability,good real-time,high EMC,small volume,low cost and simple implementation.