: Insert an empty, formatted Siemens Memory Card into your PC.
, as there is no official "backdoor" to recover a forgotten password without wiping the device. Methods for Unlocking S7-1200 Requirement Siemens Memory Card A 4MB+ SIMATIC Memory Card (SMC) Wipes memory and resets the password. TIA Portal Online Tools "Online & Diagnostics" access via TIA Portal Resets settings if you have the current password or if no protection is set. SIMATIC Automation Tool Standalone Siemens software Can perform a factory reset without TIA Portal. Review of the Memory Card Method (Most Reliable) s71200 password unlock work