Network topologies
3.3 Ring with redundancy manager
SCALANCE X-300
34 Operating Instructions, 02/2012, A5E01113043-12
Properties of a star structure
Each IE Switch X-300 communicates over a TP or FO cable with a central switch with which
all other switches are also connected within a star structure. Communication is possible over
the optical or the electrical ports.
Configuration example
Sample electrical configurations with SCALANCE X310, SCALANCE X-200, SIMATIC S7-
300/400, SIMATIC ET 200, and operator panels as end devices.
Figure 3-2 Star structure (electrical)
3.3 Ring with redundancy manager
Ring with redundancy manager
To increase availability, linear (bus) topologies of up to 50 switches can be closed to form a
ring:
● Optical: SCALANCE X-400, SCALANCE X-300, SCALANCE X-200
● Electrical: SCALANCE X-400, SCALANCE X-300, SCALANCE X-200 or ESM
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