用cad画出了西门子S7-200系列的各个型号的PLC和模块的图形-Cad draw with Siemens S7-200 series PLC and the various types of graphical modules

西门子触摸屏显示程序，显示界面清新，内容丰富直观，是很好的CEMS实用界面。(The screen display program of Siemens shows a clean interface and rich and intuitive content. It is a good CEMS practical interface.)

西门子s7-200，300的PLC模块和cup的电气图纸设计图库(SIEMENS s7-200300's PLC module and cup's electrical drawing design gallery)