In the Siemens TIA Portal environment, protection is hierarchical. It isn't just a simple lock on the file; it is integrated into the firmware of the CPU. The S7-1200 utilizes four distinct access levels:
The S7-200 PLC has a built-in password protection feature to prevent unauthorized access to the PLC's program, data, and configuration. The password protection can be set up using STEP 7-Micro/ Win or TIA Portal (Totally Integrated Automation Portal) software. s71200 password unlock top