Siemens SIMATIC ET 200AL, System Manual

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OPC UA communication
9.3 Using the S7-1500 as an OPC UA server
Communication
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Function Manual, 05/2021, A5E03735815-AJ
Procedure
Proceed as follows to completely hide a data block for OPC UA clients or to protect a data
block from write access from OPC UA clients:
1.
Select the data block to be protected in the project tree.
2. Select the "Properties" shortcut menu.
3. Select the "Attributes" area.
4. Select/clear the "DB accessible from OPC UA" checkbox as required.
Figure 9-11 Hiding DBs or DB contents for OPC UA clients
Note
Effect on settings in the DB editor
If you hide a DB using the DB attribute described here, the settings for the components in the
DB editor are no longer relevant; individual components can no longer be accessed or
written.
Tip: Using the overview of all program blocks
If you are using multiple data blocks, it is appropriate to use the detailed overview of the
"Program blocks" folder for selective activation or deactivation of the OPC UA accessibility.
Follow these steps:
1.
Select the "Program blocks" folder in the project tree.
2. Select the "Overview" command in the "View" menu.
3. Select the "Details" tab.
An overview of the blocks with their attributes is displayed.