Insert the SMC into a PC with a standard SD card reader.
Power down the PLC and remove the SIMATIC Memory Card. siemens s71500 password reset top
The most reliable way to clear a forgotten password on an S7-1500 is to perform a factory reset using a SIMATIC Memory Card (SMC). This method will erase the current user program and configuration from the PLC. Insert the SMC into a PC with a standard SD card reader
