• For creating safety-related automation applications with SIMATIC S7 in LAD or FBD (STEP 7 required)
• Implementation of safety functions by simply connecting function blocks
• With prefabricated block library
• Custom block creation possible
• Optimal embedding in the automation world thanks to total integration in the STEP 7 tools
• Scope of delivery:
  • Distributed Safety Editor
  • Code generator
  • Debugger
  • Standard block libraries

Licensing

• SIMATIC S7 Distributed Safety is delivered with a floating license. The floating license allows installation of the software on any number of computers. This means one user per license can use the software independently of the computer used or from a specific workstation. The number of existing licenses determines the number of computers on which the software can be used simultaneously.
•  An upgrade to version 5.4 is offered for users of the previous versions 5.x.
• A trial license valid for 14 days is available for download from Industry Online Support: https://support.industry.siemens.com/cs/document/109749360

You can find more information on the Software Update Service, license types, online software delivery and handling your SW licenses with the Automation License Manager:

http://www.siemens.com/simatic-licenses