Siemens SIMATIC ET 200AL System Manual page 1321

OPC UA communication
9.2 Security at OPC UA
Structure of the "TrustList" node
The "TrustList" node has the following structure:
Methods and attributes for the "TrustList" node
Below is a description of the nodes under "TrustList" that supplement the methods of the
Object Type "FileType". The TrustList Type is derived from FileType (see OPC 10000-5: OPC
Unified Architecture, Part 5: Information Model).
Method / Attribute (Variable)
LastUpdateTime
OpenWithMasks
CloseAndUpdate
AddCertificate
RemoveCertificate
Description of the methods
The description of the methods with their result codes, attributes and types of the TrustList
object is available in the OPC UA specification Part 12, Discovery and Global Services.
200
Description
Variable that shows the time of the last update.
Method that permits a client to only read a part of the Trus-
tList.
Method for closing the TrustList file and applying the
changes.
Method for adding a single certificate to the TrustList.
Method for removing a single certificate from the TrustList.
Function Manual, 05/2021, A5E03735815-AJ
Communication