Information About Compatibility - Siemens SIMATIC S7-1500 System Manual

6. Assign the required function right for the access to the CPU with the name "PLC1" to the role
"PLC1-Read-Access-Role" - in this case "Read access".
7. Switch to the "User" tab and assign the "PLC1-Read-Access-Role" role to the activated
"Anonymous" user.
Result: The "Anonymous" user has read access for PLC1. This means that the access level
tables of the CPU "PLC1" in the project are preset to "Read access" (cannot be changed)
and users who are not logged in only have read access.
For full access, or full access including fail-safe, you have to configure a password for the
full access in the table for the access protection. Users who need full access to the CPU
during runtime via an action, e.g. because a project is to be loaded onto the CPU, must
legitimize themselves for this action with this password.
Tip
To make the user rights transparent, use meaningful names for the respective roles. You
create users and roles for the entire project; you must select the function rights of a role
individually for each CPU in the project. With a descriptive name you can, for example,
immediately see which CPUs have read access and which CPUs are fully protected.
11.3.4

Information about compatibility

In the following sections, you can find information on the behavior of the SIMATIC Drive
Controller with the local user management, e.g. when replacing modules in STEP 7 and for
further use of projects and programs without local user management.
Replacement part scenario
If you replace a SIMATIC Drive Controller with a CPU firmware version < V3.1 with a SIMATIC
Drive Controller with a CPU firmware version V3.1 or higher, the program stored on the
memory card runs like the original SIMATIC Drive Controller. The behavior with regard to the
configured access levels, the users for the OPC UA server and the web server, corresponds to
the original SIMATIC Drive Controller.
In this case, the "Change password function" via the web server API is not accepted by the
CPU because the CPU has been configured for firmware version < V3.1 and has no local user
management.
SIMATIC Drive Controller
System Manual, 11/2023, A5E46600094-AD
Protection
11.3 Local user management
245