Create a text file named "S7_JOB.S7S" on the root of the card. Inside the file, type the command: RESET_TO_FACTORY . Power off the PLC and insert the card.
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Once the process completes, the PLC is back to factory defaults with no password. Method 2: Using the MicroSD Card Reset Create a text file named "S7_JOB
Siemens S7-200 SMART PLC Go to product viewer dialog for this item. The information provided in this article is for
S7 200 Smart - Forget password - Minimum Privilege - SiePortal
Power on the PLC. The "STOP" and "ERROR" LEDs will blink during the process.
If a CPU is set to Level 3 or Level 4 protection and the password is lost, Siemens does not provide a "backdoor" password recovery tool for security and intellectual property reasons. The officially supported solution to fix a locked state is to restore the hardware to factory defaults.