Siemens Industrial Ethernet Switches SCALANCE X-200 - Manual (Page 253)

PROFINET IO functionality
8.2 Settings in HW Config
SCALANCE X-200
Operating Instructions, 12/2011, A5E00349864-19
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The following diagnostic interrupts can be generated:
● Wiring or port error
Diagnostic interrupts are generated if the following errors occur at the ring ports:
– Connection abort on a ring port
– A neighbor of the ring port does not support MRP.
– A ring port is connected to a non-ring port.
– A ring port is connected to the ring port of another MRP domain.
● Interruption / return (redundancy manager only)
If the ring is interrupted and when the original configuration returns, diagnostic interrupts
are generated.
The occurrence of both interrupts within 0.2 seconds indicates an interruption in the ring.
Parameter assignment of the redundancy is not set by STEP 7
This option only affects switches.
If you enable this option, existing redundancy settings from Web Based Management, CLI or
SNMP, are retained and are not overwritten.
Select this option if you want to set the properties for media redundancy using alternative
mechanism or tools such as Web based Management or SNMP. The parameters in the
"MRP configuration" box are then reset and grayed out. The entries then have no meaning.
Note
No change of the media redundancy configuration during operation of PROFINET IO
With X200-IRT devices, media redundancy cannot be set during PROFINET IO operation.
Set the devices to the "Reset to Factory Defaults" status to configure media redundancy on a
alternative path. You can then make the redundancy settings with WBM, CLI, or SNMP. After
these settings have been made, you can create the configuration in STEP 7.