西门子器件CAD文件下载 
1. CAD drawings for S7-22x in the AutoCAD format

S7-200 AutoCAD file V16.dwg as ZIP file

http://support.automation.siemens.com/WW/llisapi.dll/csfetch/7205083/S7-200-AutoCAD-V16_dwg.zip?func=cslib.csFetch&nodeid=19877135

S7-200 AutoCAD file V16.dxf as ZIP file 

http://support.automation.siemens.com/WW/llisapi.dll/csfetch/7205083/S7-200-AutoCAD-V16_dxf.zip?func=cslib.csFetch&nodeid=19877144

AutoCAD.pdf as ZIP file 

http://support.automation.siemens.com/WW/llisapi.dll/csfetch/7205083/AutoCAD-pdf.zip?func=cslib.csFetch&nodeid=19877139

Text Display TD 200 and TD 200C AutoCAD Drawing 

http://support.automation.siemens.com/WW/llisapi.dll/csfetch/19610140/TD200.dxf?func=cslib.csFetch&nodeid=19612446

2. S7-300

http://www.sea.siemens.com/autogen/docs/cad/S7-300.zip

3. S7-400

http://www.sea.siemens.com/autogen/docs/cad/S7-400.zip

4. C7

http://www.sea.siemens.com/autogen/docs/cad/C7.zip

5. Distributed I/O

ET200eco

http://www.sea.siemens.com/autogen/docs/cad/ET200eco.zip

ET200L

http://www.sea.siemens.com/autogen/docs/cad/ET200L.zip

ET200S

http://www.sea.siemens.com/autogen/docs/cad/ET200S.zip

ET200S_Motor_Starter

http://www.sea.siemens.com/autogen/docs/cad/ET200S_Motor_Starter.zip

ET200X

http://www.sea.siemens.com/autogen/docs/cad/ET200X.zip

ET200X_Motor_Starter

http://www.sea.siemens.com/autogen/docs/cad/ET200X_Motor_Starter.zip

6. Centralized or Distributed I/O

ET200M

http://www.sea.siemens.com/autogen/docs/cad/ET200M.zip

7. Ethernet

http://www.sea.siemens.com/autogen/docs/cad/Networking%20Autocad%20files%200103.ZIP

8. PROFIBUS

http://www.sea.siemens.com/autogen/docs/cad/profibus/PROFIBUS.ZIP

9. SCALANCE

http://www.sea.siemens.com/automat/scalance/SCALANCE.ZIP