Standby - Siemens SCALANCE XM-400 Configuration Manual

Industrial ethernet switches

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Standby

SCALANCE X switches support not only ring redundancy within a ring but also redundant

linking of rings or open network segments (linear bus). In the redundant link, rings are

connected together over Ethernet connections. This is achieved by configuring a master/slave

device pair in one ring so that the devices monitor each other and, in the event of a fault,

redirect the data traffic from the normally used master Ethernet connection to the substitute

(slave) Ethernet connection.

Standby redundancy

Industrial Ethernet / PROFINET (Twisted Pair)

Industrial Ethernet / PROFINET (Fiber Optic)

Example of a redundant link between rings

SCALANCE XM-400/XR-500 Web Based Management (WBM)

Configuration Manual, 05/2017, C79000-G8976-C248-12

Operator Station

SCALANCE X208

SCALANCE XB205-3

as standby master

4.6 Redundancy mechanism

Operator Stations

SCALANCE XB205-3

as standby slave

Technical basics

Scalance xm-500