Siemens Simatic S7-1500R System Manual page 139

Configuration
6.2 Configuration procedure
2. Assigning IP addresses (device IP addresses)
STEP 7 automatically assigns an IP address to each PROFINET interface of a CPU. You
can also assign the IP addresses manually.
For PROFINET interface X1 of the CPUs, the IP addresses must be located in the same
subnet.
The IP address is displayed in the CPU properties, in the "PROFINET interface [X1]" area of
the "IP protocol" section.
Figure 6-2
Redundancy IDs
In the STEP 7 project tree, each of the two CPUs is displayed with its own tree in the
redundant system:
Figure 6-3
Each CPU of the redundant system has a redundancy ID. The redundancy ID is used to
assign a project tree to the real CPU in STEP 7. The top CPU of the two in the tree is always
the CPU with the redundancy ID "1". The bottom CPU has the redundancy ID "2".
If a CPU has a valid hardware configuration and you change the redundancy ID of that CPU,
you also change the CPU's name and IP addresses. You can find more information in the
section Redundancy IDs (Page 187).
138
IP address
Redundant system in the project tree
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA