I want to have two OPC-UA interfaces in the PLC, but each of them should be protected with its own password.

I want to create two variable lists in the PLC, which I send to the OPC-UA interface.
One list is for one user, the other list for another user.
Each list should have its own username and password.

How can I implement this?

Hi AutoGen_8366199,

thank you for posting the response of the technical support. This is the translation of the message for our international users: 

Siemens Technical Support

For this, you need TIA Portal V20 or higher and a CPU that supports firmware V4.0 or higher.

The keyword is "role-based security in OPC UA."

https://docs.tia.siemens.cloud/r/simatic_et_200clean_manual_collection_enus_20/function-manuals/communication-function-manuals/communication/opc-ua-communication/security-at-opc-ua/role-based-security-in-opc-ua

Kind regards, Moderator_Lan