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随着煤炭行业的不断发展、选煤技术的不断改进、自动化水平的不断提高,可编程逻辑控制器(PLC)在选煤行业中的应用日益成熟。详细阐述了基于西门子S7-300系列PLC集中控制系统的网络构成、硬件选型、控制方法、软件流程图,并在此基础上介绍了上位机的构成和完成功能,最后给出该集中控制系统在晓明矿选煤厂的应用效果。
With the continuous development of the coal industry, continuous improvement of the coal preparation technology and continuous improvement of the automation level, the application of the programmable logic controller (PLC) in the coal preparation industry is increasingly mature. The network configuration, hardware selection, control method and software flow chart based on Siemens S7-300 series PLC centralized control system are expounded in detail. On the basis of this, the structure and function of the host computer are introduced. Finally, the centralized control system Xiaoming Coal Mine in the application results.