基于两级网络的远程设备监控系统

本文在实验室设各的基础上，研究基于两级网络控制的远程设备监控系统。上层网络是基于以太网的监控系统，通过工业组态软件WinCC监控工业现场设备状况，下层网络采用Profibus—DP通讯，PLC主站或从站利用Profibus—DP通讯控制现场设各，并实时采集现场设备的运行状态数据。论文首先分析了实验系统组成和工作原理，然后介绍了WinCC与PLC的通讯过程及软件组态，完成上位机的监控功能。在分析系统通讯原理的基础上，通过具体的程序设计实现下位机对现场设备的控制与数据采集。

The Long-distance Equipment Monitoring System Based on Two-level Networks

The paper studied long-distance monitoring system based on two-level networks for experimental equipment in laboratory. The industry Ethemet is used for the upper floor, monitoring the industry local equipment status through industrial configuration software WinCC. The under layer is adopted the Profibus-DP network., PLC master or slave made use of the Profibus-DP communication to control local equipment and obtain status information of the local equipment real time. First, the paper analyzed constitutes of the experiment equipment and work principle, then introduced the communication process of WInCC and PLC, and the process of software configuration to complete the up machine monitor. Based on analyzed communication principle of the system, gave a program for down machine to achieving control local equipment and data acquirement.