Ethernet Topologies; Fig. 9 Ethernet Topology With Several Bk9103 In Two Lines - Beckhoff BK9053 Documentation

Mounting and wiring
3.5

Ethernet topologies

BK9053
Since the BK9053 has only one port, a conventional star topology must be used.
BK9103
The BK9103 features an internal triple switch with two external ports and one internal port. The internal
switch facilitates creation of a line topology. A maximum of 20 BK9103s can be connected in series in a
physical line. The maximum distance between two BK9103s is 100 m. The maximum overall line length is
therefore 2 km. No further switch may be included in this line.
Fig. 9: Ethernet topology with several BK9103 in two lines
The BK9103 also enables a classic star topology to be set up. In this case the second port is not used. Both
port interfaces are equivalent.
BK9053, BK9103 Version: 2.3.0 19