Siemens SIMATIC S7-1500 Function Manual page 281

OPC UA communication
9.4 Using the S7-1500 CPU as an OPC UA client
7. Using drag-and-drop, move the "UA_NodeGetHandleList" instruction into the program
editor.
Select the "Multi-instance" call option.
Click the toolbox symbol (LAD and FBD) or the small green box below the instance name
(STL and SCL) if the editor is not already open.
Select the client interface that you want to use. The example uses the "ProductionLine"
client interface.
Under "Data access > Read/Writelist" select the read list that you want to use (in the
example the read list "Product").
STEP 7 now automatically interconnects all parameters of the
"OPC_UA_NodeGetHandleList" instruction:
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Function Manual, 11/2019, A5E03735815-AH
Communication