Siemens SIMATIC S7-1500 Function Manual page 291

Routing
10.2 S7 routing
S7 routing for online connections
With the PG/PC, you can reach devices beyond S7 subnets, for example to do the following:
● Download user programs
● Download a hardware configuration
● Execute test and diagnostics functions
In the following figure, CPU 1 is the S7 router between S7 subnet 1 and S7 subnet 2.
Figure 10-1
290
S7 routing: PROFINET - PROFINET
Function Manual, 11/2019, A5E03735815-AH
Communication