Siemens SIMATIC S7-1500 System Manual page 354

3. Activate the required protection level in the first column of the table. The green check marks
in the columns to the right of the access level show which operations are still possible
without entering the password. In the example (Figure: Possible access levels), access is not
possible without a password.
4. In the "Enter password" column, specify a password for the access level "Full access" in the
first row. In the "Confirm password" column, enter the selected password again to avoid
incorrect entries.
5. Assign additional passwords as required for other access levels.
6. Download the hardware configuration for the access level to take effect.
The CPUs log the following actions with an entry in the diagnostics buffer:
• Input of the correct or incorrect password
• Changes to access level configuration
Behavior of a password-protected CPU during operation
The protection of the R/H-CPUs up to FW version 3.0 takes effect for an online connection
after you have loaded the settings into the CPUs. If you set a higher access level and
download it to the CPU, all other online connections will be interrupted. You will then need
to establish a new online connection.
Before an online function is executed, STEP 7 checks the necessary permission and, if
necessary, prompts the user to enter a password. The functions protected by a password can
only be executed by one programming device/PC at any one time. Another programming
device/PC cannot log on.
Access authorization to the protected data applies for the duration of the online connection
or for as long as you have STEP 7 open. The menu command "Online > Clear access rights"
cancels the access authorization.
You can limit access to a password-protected CPU in RUN locally on the display. This prevents
access even with a password.
Access levels for F-CPU
For the fail-safe R/H-CPUs up to FW version V3.0, there is an additional access level in addition
to the four described access levels. For more information on this access level, refer to the
description of the F-system SIMATIC Safety - Configuring and Programming
(https://support.industry.siemens.com/cs/ww/en/view/54110126) SIMATIC Safety
Programming and Operating Manual.
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
11.4 Configuring access protection for the CPU
Protection
353