自动轧钢机系统设计与实现基于西门子S7-200系列PLC结构的毕业论文

Based on the document "Graduation Thesis on Automatic Steel Rolling Machine System Based on Siemens S7-200 Series PLC Structure", the paper comprehensively discusses the development and current status of automatic steel rolling machines in China. The thesis provides a detailed analysis of the PLC's basic components, characteristics, and working principles, as well as a thorough description of the overall design process of an automatic steel rolling machine system based on the Siemens S7-200 series PLC. The document elaborates on the hardware components of an automatic steel rolling machine and includes the PLC external wiring diagram. The ladder diagram programming of the PLC was carried out using the Siemens PLC ladder diagram specialized software STEP7. The basic principle and working process of the automatic steel rolling machine are explained in detail, highlighting the role of programmable controllers in the system. The program covers the majority of the automatic steel rolling machine's operational processes. The utilization of PLC-controlled automatic steel rolling machines enhances system stability, ensuring long-term stable operation. Keywords such as programmable controllers, automatic steel rolling machines, ladder diagrams, inverters, and control systems are emphasized throughout the thesis. Overall, this paper serves as a comprehensive guide for designing and understanding the operation of automatic steel rolling machines based on the Siemens S7-200 series PLC structure. It showcases the importance of PLC technology in improving system performance, reliability, and efficiency in industrial applications, particularly in the steel manufacturing sector. The insights provided in this thesis contribute to advancing the automation and control capabilities of steel rolling machines, leading to enhanced productivity and quality in the steel production process.