Siemens SIMATIC S7-1500 Function Manual page 120

4. Select the "Connections" button and the "S7 connection" entry from the drop-down list.
5. Using drag-and-drop in our example, connect PLC_1 in the left S7 subnet (PROFIBUS) to
PLC_3 in the right S7 subnet (PROFINET).
The S7 connection between CPU 1 and CPU 3 is configured.
Figure 7-4 S7 connections via different subnets
Communication
Function Manual, 11/2019, A5E03735815-AH
S7 communication
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