Siemens SIMATIC ET 200AL System Manual page 1281

OPC UA communication
9.1 What you need to know about OPC UA
Example: Access of OPC UA clients to OPC UA servers via S7-1500 CPU with activated IP
Forwarding
OPC UA client and OPC UA server can also be connected to one another via an S7-1500 CPU,
in which case the S7-1500 CPU operates as an IP Forwarder. This configuration option allows
for flexible expansion of existing systems.
Figure 9-3 Example: Access of OPC UA clients to OPC UA servers via S7-1500 CPU with activated IP Forwarding
Additional information
Additional information on access options via the virtual interface and via IP forwarding can be
found in the following sections:
• IP forwarding (Page 378)
• Virtual interface for IP-based applications (Page 387)
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Function Manual, 05/2021, A5E03735815-AJ
Communication