PLC control technology has been widely used in various fields of automation control. This paper introduces in detail an automatic monitoring system for belt conveyors on coal mines. The system uses the Siemens s7-300 PLC control core, which can communicate with a variety of intelligent electronic devices to realize the automatic monitoring of the belt conveyor system in coal mines. The scheme is easy to implement and has high reliability. The control system based on this scheme has been greatly improved in performance and automation compared with the original system, and has important reference value for similar systems. Keywords: host computer; PLC; centralized control With the rapid development of computer and control technology, it has become more and more common for factories and mines to use host computers and PLCs for centralized monitoring, and the technology has become more and more advanced. Taking the centralized control system of belt conveyors on the coal mines of Danhou Coal Mine in Hebei as an example, this paper studies and develops a monitoring system for belt conveyors on coal mines based on PLC, which is suitable for the current needs of industrial enterprises for automation. It has been put into operation and has achieved good results.
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