Siemens SIMATIC S7-1500 Function Manual page 254

7. STEP 7 displays a dialog with which you can select an XML file.
This XML file describes a address space of an OPC UA server.
The address space of an OPC UA server contains all PLC tags and server methods
published by an OPC UA server.
OPC UA clients can access this address space:
- Read PLC tags
- Write PLC tags
- Calling Server Methods
The address space of an OPC UA server can be divided into one or more server
interfaces.
For creating server interfaces, see: Creating a server interface for companion
specification (Page 218).
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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