Siemens S7-1500 Password Reset

Power OFF the CPU. Remove the memory card. Power ON again. The CPU is now empty and password-free.

Follow the LED blinking patterns (typically release and re-hold MRES within 3 seconds) to trigger the factory reset. Summary Table: Reset Methods Requirements Data Impact PLC Display Physical access to front panel Deletes user program SMC Manual Wipe PC with SD card reader Deletes program & data TIA Portal Reset Online connection (MAC or IP) Full factory reset Mode Switch Physical access Full hardware reset How to remove/delete protection password - SiePortal siemens s7-1500 password reset

: If individual blocks are "Know-How Protected," deleting the CPU password will not unlock those blocks. You must have the original block password to view or edit the code. Hardware Protection Power OFF the CPU

Once the program is deleted, the CPU will no longer require an access password for downloading a new project. 2. The SIMATIC Memory Card (SMC) Wipe Since the S7-1500 requires a SIMATIC Memory Card The CPU is now empty and password-free