Siemens SIMATIC S7-1500 Function Manual page 329

Communication with the redundant system S7-1500R/H
13.1 System IP addresses
Communication via the system IP addresses X1 and X2
If the CPUs of the redundant system S7-1500R/H have two PROFINET interfaces (X1 and
X2), you can use the a system IP address for each PROFINET interface. PROFINET
devices which are connected to the interfaces X1 of the CPUs communicate via the
system IP address X1. PROFINET devices which are connected to the interfaces X2 of the
CPUs communicate via the system IP address X2.
①
②
③
Figure 13-3
328
Open User Communication between the S7-1500R/H redundant system and a different CPU.
HMI communication with the S7-1500R/H redundant system
Open User Communication between the S7-1500R/H redundant system and a PC
Example: Communication of the S7-1515R redundant system via the system IP
addresses X1 and X2
Function Manual, 11/2019, A5E03735815-AH
Communication