基于S7-200PLC技术实现模压机的自动控制

The Realization of Automatic Control of Molding Machine Based on S7-200PLC Technology

运用西门子S7-200系列PLC技术,对典型模压机进行硬件配置、I/O分配和外部接线设计,编制了顺序功能图和PLC程序梯形图,并进行上机模拟调试,调试结果与实际控制要求一致,可实现模压机自动恒温、自动放气、自动起模、自控时间等多项自动控制功能,值得技术借鉴和推广应用。

With the application of PLC technology of Siemens S7-200 series, the paper makes the hardware configuration, I/O dis- tribution and external wiring design for the typical molding machine, workouts the sequential function chart and PLC ladder diagram, then makes the computer simulation debugging. The debugging restdts are corresponding with the actual controlling requirement. It can realizes some functions that are molding machine automatic constant temperature, automatic deflation, auto molding and automatic time controlling, which is worthy for reference and technology application.