Siemens SIMATIC S7-1500 System Manual page 302

5. Specify MRP role and MRP domain for the R1 devices of the S7-1500H redundant system in
STEP 7
To define the media redundancy for the further devices of the rings, proceed as follows:
1. Switch to the device view of the left ET 200SP (ET200SPR1_1).
2. Click on the PROFINET interface X1 of the left IM 155-6 PN R1.
3. Change the MRP domain to "mrpdomain-1" (if required) and the media redundancy role to
"Client".
4. Click on the PROFINET interface X1 of the right IM 155-6 PN R1.
5. Change the MRP domain to "mrpdomain-2" and the media redundancy role to "Client".
6. Switch to the device view of the right ET 200SP (ET200SP-R1_2) and repeat steps 2 to 5.
Note
Alternative method for assigning MRP role and MRP domain.
For larger projects, we recommend assigning MRP roles and MRP domains as follows:
1. Switch to the network view.
2. Click the connection PN/IE_1.
3. In the Inspector window, navigate to "Properties > General > MRP domains".
4. Scroll down to the "Devices" section
• Under "PROFINET IO system", select the controller interface.
• Under "Devices" you configure the respective MRP domain and the MRP role.
6. Configuring devices outside the STEP 7 project
Set the MRP role "Client" for devices of the PROFINET rings that are not in STEP 7.
Reference
You can find information on the PROFINET topologies of S7-1500R/H redundant systems in
the PROFINET Function Manual.
(https://support.industry.siemens.com/cs/ww/en/view/49948856)
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
9.4 Configuring H-CPUs with PROFINET rings and R1 devices
Configuration
301