Password Unlock Work [upd] | S71200

Power down the S7-1200 completely. Step 2: Remove the SIMATIC Memory Card (if inserted). Step 3: Insert a formatted blank SD/MMC card into the slot. Step 4: Power up the PLC. The CPU will copy its internal firmware & password to the card (creating a clone). Step 5: Power down again. Remove the card. Step 6: Using a PC card reader, delete the S7_JOB.S7S and PASSWORD files (Do not delete OS files unless you want to brick it). Alternative: Simply insert the cloned card into a different S7-1200. The password moves with the card, leaving the original CPU unlocked.

: The CPU will automatically clear its internal memory and the password protection. Once the "MAINT" LED stops flashing, the reset is complete. s71200 password unlock work

Once the LED stops blinking and stays lit (or after the RUN/STOP LED stays steady), the process is complete. 3. Finalize Reset Power off the PLC again. Remove the MMC from the slot. Power down the S7-1200 completely

To unlock a password-protected Siemens S7-1200 PLC Go to product viewer dialog for this item. Step 4: Power up the PLC