format it using Windows formatting tools; only delete the files via the file explorer or TIA Portal. Power Off: Turn off the power to the S7-1500 CPU. Insert Card: Insert the empty SMC into the CPU's memory card slot.
Once the CPU LEDs stop flashing and indicate a stop state (usually a solid yellow STOP LED), power off the CPU, remove the card, and power it back on. siemens s71500 password reset top
Power on the CPU. The PLC will detect an empty card, and the "MAINT" light will flash. This indicates that the CPU is transferring its internal state to the card, which is effectively clearing its memory. format it using Windows formatting tools; only delete
To avoid future password-related issues, follow these best practices: Once the CPU LEDs stop flashing and indicate
Choose the option Delete IP address and device name (if you want a completely fresh start) and click the Reset button.