基于两级网络的远程设备监控系统

本文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Winee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通讯控制现场设备，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WineC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 Monitor Long.distance Equipment System Based on Two-level Network

The paper studied long-distance monitor system based on two-level networks for experiment equipment in the laboratory. The industry Ethernet is used for the upper floor, monitoring the industry locale 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 locale equipment and obtain status information of the locale 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 locale equipment and data acquirement.