Defining access protection passwords for different access protection levels is part of the authorization strategy for SIMATIC AX. If you want to execute an online function that is password protected by an access protection level, you are prompted to enter a password. The configuration of the access protection is mandatory for S7-1500 PLCs via one of the access protection modes. The plausibility of the assigned access levels is not checked against each other and the responsibility for consistency lies with the user.