Siemens SIMATIC S7-1500 System Manual page 301
Redundant system
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Also See for SIMATIC S7-1500:
- Function manual (402 pages) ,
- System manual (393 pages) ,
- Manual (188 pages)
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Configuration
9.4 Configuring H-CPUs with PROFINET rings and R1 devices
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 an 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
configuration 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.
3. In the Inspector window, navigate to "Properties > General > Advanced options > Media
redundancy".
4. Change the MRP domain to "mrpdomain-1" (if required) and the media redundancy role for
the H-CPU to "Manager (auto)".
5. Select the PROFINET interface X1 of the lower H-CPU of the S7-1500H redundant system.
6. Change the MRP domain to "mrpdomain-2" (if required) and the media redundancy role for
the H-CPU to "Manager (auto)".
7. Enable the "Diagnostic interrupts" option.
Note
If the "Diagnostic interrupts" option is enabled, diagnostic interrupts are generated at the
ring ports in the event of the following errors:
Wiring or port error:
• A neighbor of the ring port does not support media redundancy MRP.
• A ring port is connected to a non-ring port.
• A ring port is connected to the ring port of a different MRP domain.
You can find more information on this topic in the STEP 7 online help.
300
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
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