Siemens SIMATIC S7-1500 System Manual page 206

Configuration
8.4 Configuring H-CPUs with PROFINET rings and R1 devices
4. Switch to the device view of the ET200SP-R1_1 station and set the watchdog timer for
both interface modules. To do this, navigate in the Inspector window to "Properties >
PROFINET interface [X1] > Advanced options > Real-time settings > IO cycle".
5. Repeat steps 1 to 4 for the ET200SP-R1_2 station.
Result: The R1 devices are connected to the S7-1500H redundant system.
Figure 8-10 R1 devices assigned in the network view with system redundancy
NOTE
Alternative method for assigning IO devices.
For larger projects, we recommend assigning the IO devices as follows:
1. Switch to the network view.
2. Move the cursor over the station you want to assign.
3. Press the right mouse button and select "Assign to new DP master/IO Controller" in the
shortcut menu.
4. Select both IO Controllers in the following dialog and then click on "Ok". This assigns the
left interface module to the left IO Controller and the right interface module to the right
IO Controller.
5. Repeat steps 2 through 4 for additional IO devices or mark several stations
simultaneously.
4. Specify MRP role and MRP domain of the CPUs of the S7-1500H redundant system.
As soon as you create a S7-1500H redundant system in STEP 7, STEP 7 automatically assigns
the MRP role "Not device in the ring" for the PROFINET interfaces X1 of the two CPUs. For the
project engineering as PROFINET ring you have to change the MRP role to "Manager (auto)".
To change the MRP role of the redundant system, follow these steps:
1. Switch to the device view of the S7-1500H redundant system.
2. Select the PROFINET interface X1 of the upper H-CPU (mounting rail_0) of the S7-1500H
redundant system.
206
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD