Siemens S7-1500 Password Reset New! <Must Watch>

Never use standard Windows formatting tools (FAT/NTFS) on a SIMATIC Memory Card. Doing so will permanently destroy the internal internal formatting required by Siemens, rendering the expensive card useless. Step-by-Step Instructions Turn off the power supply to the S7-1500 rack. Open the front door of the CPU and eject the SMC.

If you have a spare, empty SIMATIC Memory Card, you can use it to instantly overwrite the locked PLC memory. Step-by-Step Instructions Turn off the power to the PLC. Remove the password-protected SMC. Insert a completely blank, formatted Siemens SMC. Turn on the power.

Physically go to the PLC rack. Turn the mode selector switch from RUN to STOP. The LED should change from green (RUN) to orange (STOP). A flashing STOP LED indicates a startup error – which is fine. siemens s7-1500 password reset

Use the front panel arrow keys to navigate the display menu. Go to and press OK. Navigate to Reset and press OK. Select Factory Settings and press OK.

Take a compatible SIMATIC Memory Card and insert it into a card reader connected to your PC. Never use standard Windows formatting tools (FAT/NTFS) on

If your issue is not CPU access, but rather a lost password on a specific code block (FB/FC) within an open TIA Portal project, the resolution path changes. With a Backup Project

If the CPU ignores the blank card, you may need to first set the CPU to “Program” mode via the DIP switches on older models, though most S7-1500s auto-detect. Open the front door of the CPU and eject the SMC

You can also use the physical mode selector switch on the front of the CPU: Set the switch to . Remove the memory card.