Siemens SIMATIC CPU 410 System Manual page 313

S7 routing gateways: PN - DP
Gateways between subnets are routed in a SIMATIC station that is equipped with interfaces
to the respective subnets. The following figure shows CPU 1 (DP master) acting as router for
subnets 1 and 2.
Figure 18-2
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
S7 routing
Supplementary information
18.7 Communication services
313