Siemens: S7-1500 Password Reset

Wait for the LEDs to stop blinking (Maintenance LED typically flashes), then power off and remove the card. Resetting via the Built-in Display

: Take the card out and insert it into a standard SD card reader on your PC. Delete Files (Do NOT Format) : Open the card in Windows Explorer. Delete the S7_JOB.S7S file and folders like SIMATIC.S7S : Never format the card using Windows. Do NOT delete hidden files like crdinfo.bin , as this will render the card useless. Reinsert & Power On siemens s7-1500 password reset

An S7-1500, when powered on with a blank, bootable memory card inserted, will attempt to load a program from the card. If the card has a valid, unencrypted program, it overwrites the internal load memory. If the card is , the CPU will clear its internal memory and revert to factory state, including password removal. Wait for the LEDs to stop blinking (Maintenance

If the hardware allows, you can perform a reset directly on the PLC's screen. Delete the S7_JOB