Siemens SIMATIC ET 200AL, System Manual

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OPC UA communication
9.5 Tips and recommendations
Communication
Function Manual, 05/2021, A5E03735815-AJ
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3. Switch to the "Details" tab in the selection window.
4. In the "DB accessible from OPC UA" column, disable the accessibility from OPC UA for
individual objects.
Figure 9-76 Calling detailed object display in the TIA Portal
9.5.3 Master copies for OPC UA communication
Master copies for the OPC UA interfaces
Interfaces of OPC UA servers and OPC UA clients that you want to use multiple times can be
stored either in the project library or in a global library. Master copies in the project library
can only be used within the project. When you create the master copy in a global library, it
can be used in different projects.
The OPC UA capable CPUs differentiate between 3 interface types of the OPC UA server:
•
Standard OPC UA server interface
• Companion specification interface
• Namespace reference
When adding the OPC UA interface in the project tree under "OPC UA Communication" each
interface type gets its own symbol. The same symbol is used by the master copy.
Create either single master copies or a master copy with multiple interfaces.
Creating multiple master copies from selection
You select one or more elements and create individual master copies from them
1.
Open the library in the "Libraries" task card.
2. Select the desired elements.
3. Using a drag-and-drop operation, move the elements to the "Master copies" folder or any
subfolder of "Master copies".