Siemens SIMATIC NET System Manual page 78

Network structures and network configuration
2.2 Network structures
Example
Figure 2-4 Star network structure with SCALANCE XC124
More complex network structures can be set up by using switches with a higher number of
ports, in the example above a SCALANCE XC124 device with 24 electrical ports. In terms of
the numbers of nodes and the physical span of the network, this is practicable only up to a
certain limit.
If extensive networks need to be configured, the use of several switches and the resulting
subnetworks makes sense.
See also
SCALANCE X-000 (Page 140)
SCALANCE XC-100 (Page 148)
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System Manual, 09/2019, C79000-G8976-C242-10
Industrial Ethernet