Siemens SIMATIC S7-1500 Function Manual page 284

Supported instructions
For the following instructions, STEP 7 automatically supplies the parameters if you are using
a client interface and a configured connection to an OPC UA server:
● OPC_UA_Connect
● OPC_UA_NamespaceGetIndexList
● OPC_UA_NodeGetHandleList
● OPC_UA_MethodGetHandleList
● OPC_UA_MethodReleaseHandleList
● OPC_UA_ReadList
● OPC_UA_WriteList
● OPC_UA_MethodCall
● OPC_UA_NodeReleaseHandleList
● OPC_UA_Disconnect
Communication
Function Manual, 11/2019, A5E03735815-AH
9.4 Using the S7-1500 CPU as an OPC UA client
OPC UA communication
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