Because the programmable controller (PLC) is specially for one industrial control computer which applies under the industry environment designs, has the antijamming ability to be strong, the reliability is high, the volume slightly, is extremely realizes the integration of machinery ideal control device and so on remarkable merit, therefore through the practice and the deep research, this article proposed uses Simens the S7-200PLC transformation numerically-controlled machine tool's related opinion and the method, introduced in detail in the control system development needs to know certain questions which and to solve, has given the control system plan and the software and hardware structure design mentality, realizes the related engine bed transformation regarding the Industrial and mining establishment to have the high application and the reference value.