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范文编号:ZD647 范文字数:12400,页数:34 文摘 本文主要介绍了 PLC在城市污水处理中的具体应用实例，系统介绍了城市污水处理工艺流程以及基于SIEMENS的S7—200 系列PLC的污水处理实施方案，介绍城市污水处理厂监控系统数据采集的方法。可编程控制器即PLC是综和了计算机技术、自动控制技术和通信技术的一种新型的、通用的自动控制装置。现在可编程控制器已经成为最重要、最可靠、应用场合最广泛的工业控制微型计算机。它具有功能强、可靠性高、使用灵活方便、易于编程以及适应工业环境等一系列优点。为了提高污水处理厂的运行管理水平， PLC也成为了该系统的重要组成单元之一，在该系统中各单元按一定拓扑结构互相连接构成污水处理厂的控制系统。 The application of PLC in sewage disposal control system Digest this article mainly introduced PLC in the city sewage treatment concrete application example, the system introduced the city sewage treatment technical process as well as based on SIEMENS S7-200 the series PLC sewage treatment implementation plan, introduces the city sewage treatment plant supervisory system data acquisition the method.The programmable controller was PLC is the grand total computer technology, the automatic control technology and the communication one kind new, the general automatic control device. Now the programmable controller already became importantly, most reliable, the application situation most widespread industry control microcomputer.It has the function strong, the reliability high, the use nimble convenient, easy to program as well as the adaptation industry environment and so on a series of merits.In order to enhance the sewage treatment plant the movement management level, PLC has also become one of this system important composition units, in this system various units according to certain topology interconnection constitution sewage treatment plant control system.
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