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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.
Key word sewage treatment; Automation control system; PLC; Hardware disposition; Software design.

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