You will find more information on SIMATIC S7-1500 at http://www.siemens.com/simatic-s7-1500

The SIMATIC NET Selection Tool is available to assist in selecting the right Industrial Ethernet switches as well as the configuration of modular variants:

Online version:
http://www.siemens.com/snst

Offline version:
http://www.siemens.com/snst-download

You will find more information on the topic of Industrial Security on the Internet at:

http://www.siemens.com/industrialsecurity