Siemens Electrical Lean Switch - Manual (Page 19)

Network Topologies
Industrial Ethernet
A5E00152007-03
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3.2 Network Topologies with ELS TP40M
Attachment of individual remotely located DTEs over ELS TP40M to a twisted-pair
network
Figure 6: ELS TP40M Bus Topology
Figure 7: ELS TP40M Star Topology