Network structures
System concept
500FSDxx
Control center
Staon
500FSDxx
Cu
RTU/IED
Figure 2: Point-to-point topology
3.3.3
Star topology
The star topology is used in centralized applications with a central connection point. The
different connections for the stations are bundled in the control center and are attached to a
single 500FSD analog modem. For star topologies two- or four-wire cabling is possible.
Control center
Cu
500FSDxx
Staon 1
500FSDxx
RTU/IED
Staon 3
500FSDxx
RTU/IED
Staon 2
500FSDxx
RTU/IED
Staon 4
500FSDxx
RTU/IED
Cu
Cu
Cu
Figure 3: Star topology
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