OPC UA communication
9.4 Using the S7-1500 CPU as an OPC UA client
Communication
256 Function Manual, 11/2019, A5E03735815-AH
10. If you want to call a method of this OPC UA server, generate a new method list.
To do this, follow these steps:
– In the left section of the editor, click "Add new method list".
STEP 7 adds a new list with the name "Method list_1".
For the example, change the name to "MethodListOpenDoor".
– Now add a method of the OPC UA server to the new method list.
In this example, add the method "OpenDoor" to the method list
"MethodListOpenDoor".
Select the method of right field of the editor ("OPC UA Server interface"). Drag the
method to the method list in the middle field of the editor.
Alternative:
You can also generate a new method list by selecting a method (node of the type Object)
in the right field of the editor (OPC UA Server interface) and then dragging it to "Add new
method list" in the left field of the editor. The new method list then contains the method of
the relevant node.
The following figure shows the content of the method list:
Figure 9-62 Methods list
If you want to call another method of the OPC UA server, you must create a new method
list. Each method list contains only one method.
See also Useful information about server methods (Page 227).
11. Compile the project.
To do so, select the project and click the following button in the toolbar:
STEP 7 compiles the project and updates the data blocks that belong to the "Productionline"
client interface.
ng compilation, STEP 7 overwrites all data in the data blocks belonging to the client
interface. For this reason, you should neither add to nor correct these data blocks manually.
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