SSA-686531 (Last Update: 2019-12-10): Hardware based manufacturing access on S7-1200 and S7-200 SMART


2019-12-10 00:00:00 UTC


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 UART interface during boot process.

Siemens is working on a solution and recommends specific countermeasures until the solution is available.