求翻译：此文主要介绍了工业污水处理系统的工艺和流程，并研究了一套PLC控制的污水处理系统的方案。文章首先介绍了基于PLC污水处理控制系统的工艺及流程，控制系统硬件结构及设计、工作原理以及设计PLC控制系统的基本原则和步骤，说明了PLC在污水处理过程中的作用。根据污水处理控制要求设计了电器设备的选型和自动控制线路，主要包括电气设备的启动和停止，PLC的信号状态、信号故障和信号采集等，最后按照工艺要求设计PLC自动控制系统，其中包括PLC的介绍、选型、与变频器的通讯、系统资源配置和根据污水处理工艺编制的PLC程序。是什么意思？

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This document focuses on the industrial waste water treatment system for process and process, and research with a set of control PLC sewage treatment systems. Based on the article first describes PLC sewage control system, the craft and process control system hardware architecture and design, how it

This article mainly introduced the industrial sewage processing system craft and the flow, and have studied a set of PLC control sewage treatment system plan.The article first introduced based on the PLC sewage treatment control system craft and the flow, the control system hardware architecture and

This article mainly introduces the technology of industrial wastewater treatment systems and processes, and a sewage treatment system controlled by PLC programme. Article first describes the technology of wastewater treatment control system based on PLC and process control system structure and worki

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