If the PLC is protected against complete formatting, this is the fastest method. It wipes the work memory and load memory, returning the CPU to its "shipped from factory" state.
Before attempting a reset, you need to know what you are up against. Unlike older S7-300/400 PLCs (which used a simple 8-character password stored in EEPROM), the S7-1500 uses a and asymmetric cryptography. siemens s71500 password reset top
"Wiped. Gone. If you don't have the original project file on a backup drive, we’re looking at a 'Day Zero' rewrite of the entire logic tree." If the PLC is protected against complete formatting,
To reset the password using the Siemens S7-1500's CLI (Command-Line Interface), use the following command: Unlike older S7-300/400 PLCs (which used a simple
This is the most common way to clear a forgotten password if you cannot go online with the CPU.