Siemens SIMATIC S7-1500 Function Manual page 279

OPC UA communication
9.4 Using the S7-1500 CPU as an OPC UA client
3. Select a call option for the instruction
The example uses a multi-instance.
STEP 7 displays the instruction in the program editor.
The editor for the Function Block Diagram (FBD) programming language uses the
following display:
The editor for the Ladder Logic (LAD) programming language displays the instruction
similarly.
4. Click the toolbox symbol in the editor for FBD or LAD.
The symbol is located in the heading of the instruction:
If you are using the editor for STL or SCL: Click the small green rectangle below the first
character of the instance name:
The example (Page 249) uses "#OPC_UA_Connect_Instance" as the instance name.
STEP 7 displays the properties of the instruction in a separate dialog.
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Function Manual, 11/2019, A5E03735815-AH
Communication