Siemens SIMATIC S7-1500 Function Manual page 263

OPC UA communication
9.4 Using the S7-1500 CPU as an OPC UA client
6. Click the "Online Access" button.
STEP 7 displays the "Connect to OPC UA server" dialog.
Figure 9-65 "Connect to OPC UA server" dialog
Tip: When establishing an online connection to an OPC UA server for the first time, use
the "Online access" button. When reconnecting after a disconnection, select the "Connect
to Online Server" button next to the "Online" selection field.
In the top right, enter the IP address of the OPC UA server whose server interface you
want to determine online.
7. Click "Find selected server".
STEP 7 establishes a connection to the OPC UA server and determines all security
settings (server endpoints) that the server holds in readiness.
STEP 7 displays the end points as list:
Figure 9-66
8. Click on the end point you want to use for a connection of STEP 7 to the OPC UA server.
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Found OPC UA server with all server endpoints
Function Manual, 11/2019, A5E03735815-AH
Communication