Media Redundancy (Mrp) - Siemens SIMATIC 6ES7158-3MU10-0XA0 Hardware Installation And Operating Manual

PROFINET IO
5.1 PROFINET IO functions
Device replacement with topology configuration
IO devices with this function can be replaced in a simple manner. The device name does not
have to be assigned with the PG/PC.
The replacement IO device is assigned the device name by the IO controller and not by the
PG/PC. The IO controller uses the configured topology and the neighborhood relationships
determined by the IO devices for this purpose. All involved devices must support the LLDP
protocol (Link Layer Discovery Protocol). The configured topology must match the actual
topology.
IO devices that were already used in another configuration must be reset to factory settings
before being reused.
You can find more information:
• In the STEP 7 online help
• as of STEP 7 V14, in the SIMATIC PROFINET Function Manual
(https://support.industry.siemens.com/cs/ww/en/view/49948856).
5.1.2

Media redundancy (MRP)

Media redundancy (MRP)
Function for safeguarding communication and system availability. A ring topology ensures
that an alternative communication path is made available if a transmission route fails.
You can find more information:
• In the STEP 7 online help
• as of STEP 7 V14, in the SIMATIC PROFINET Function Manual
(https://support.industry.siemens.com/cs/ww/en/view/49948856).
Note
Prioritized startup and media redundancy
It is not possible to include an IO device with prioritized startup in a ring topology with media
redundancy.
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Hardware Installation and Operating Manual, 07/2020, A5E50018670-AA
PN/MF Coupler