This is the most common method if you cannot go online due to the forgotten password. By clearing the SIMATIC Memory Card , you force the PLC to start with an empty configuration. Power off the CPU and remove the SMC. Step 2: Insert the card into a standard PC card reader.
If you can still establish an online connection (e.g., if you have "Read access" but lost the "Write access" password), you can use TIA Portal to perform a factory reset. siemens s7-1500 password reset
You can also use the physical mode selector switch on the front of the CPU: Set the switch to . Remove the memory card. This is the most common method if you
Hold the selector in the position until the RUN/STOP LED lights up steadily for the second time (approx. 3 seconds), then release it. Step 2: Insert the card into a standard PC card reader