Siemens Simatic S7-1500R

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)
8.5 Configuring other configuration variants
Introduction
In this section you will find information on configuring other configuration variants of the
S7-500H redundant system.
Configuration of PROFINET rings or line topology with R1 devices and Y-switch
Reparamaterize operating mode for S2 devices that can only be accessed by an H-CPU
If the S2 device is only accessible by one CPU, then the default operating mode IO device (S2)
(e.g., for switches) at the H-CPUs triggers the MAINT diagnostics. The MAINT LEDs on the H-
CPUs light up. To prevent MAINT diagnostics, you must change the operating mode from "IO
device(S2)" to "IO device(S1)". The parameter operating mode can be set in STEP 7 in the "I/O
communication" view for each S2 device.
Configuring Y-switches with DNA redundancy
You have the following options for configuring DNA redundancy:
•
You configure DNA redundancy via the web- based management of the Y switches. Result:
The Y-switches are not integrated as IO devices in STEP 7.
•
Recommendation: You configure DNA redundancy in the hardware configuration and
parameterize the Y-switches as IO devices. This allows you to evaluate the PROFINET
diagnostics of the Y-switches and perform quick troubleshooting.
MRP roles for Y-switch and IO devices of the lower-level PROFINET ring
Assign the following MRP roles:
•
For Y switch: "Manager"
•
For two Y switches with DNA redundancy:
–
Y switch as MRP Manager/DNA Manager: "Manager"
–
Y-Switch as MRP client/DNA client: "Client"
•
For IO devices: "Client"
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S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
Configuration
8.5 Configuring other configuration variants