S71200 Password Unlock Work Site

A SIMATIC Memory Card (minimum 4MB or larger, e.g., 6ES7954-8LC03-0AA0). The Procedure:

Insert the card into your PC and use TIA Portal to create an "empty transfer card". Power Down: Turn off the power supply to the S7-1200 CPU. s71200 password unlock work

Turn the power back on. The MAINT LED will flash, indicating the CPU is copying the empty configuration to its internal memory. A SIMATIC Memory Card (minimum 4MB or larger, e

If you do not have the original password and simply need to use the PLC for a new task, you must perform a factory reset. This is the only official way to bypass a lost password, but it the existing user program and hardware configuration. Turn the power back on

Insert the empty SIMATIC card into the PLC's slot.

Once the LEDs stop flashing (typically steady amber), power down the PLC, remove the card, and power it back up.