Siemens SIMATIC S7-1500 Function Manual page 328

Communication via the system IP address X1
The following diagram shows a configuration where the communication partners are
connected with a switch to the PROFINET ring of the S7-1500R/H redundant system. The
PROFINET ring connects the communication partners with the respective PROFINET
interfaces X1 of the two CPUs.
As the CPU 1513R only has one PROFINET interface, connection via the PROFINET ring is
the only possibility of communicating via the system IP address X1.
①
②
③
Figure 13-2
Communication
Function Manual, 11/2019, A5E03735815-AH
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 S7-1513R redundant system via the system IP address
X1
Communication with the redundant system S7-1500R/H
13.1 System IP addresses
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