SSA-686531 (Last Update: 2020-07-14): Hardware based manufacturing access on S7-1200 and S7-200 SMART

Published

2020-07-14 00:00:00 UTC

Summary

There is an access mode used during manufacturing of SIMATIC S7-1200 and S7-200 SMART CPUs that allows additional diagnostic functionality. Using this functionality requires physical access to the CPU during boot process.

If additional protection from unauthorized use is needed Siemens provides specific countermeasures via an update of the device boot loader.