Fieldbus Communication • 195
ETHERNET
WAGO-I/O-SYSTEM 750
Linux Fieldbus Coupler
Attention
The cable length between the node and the hub cannot be longer than 100 m
(328 ft.) without adding signal conditioning systems (i.e., repeaters). Various
possibilities are described in the ETHERNET standard for networks covering
larger distances.
10.1.2.2 Network Topologies
In the case of 10Base-T, or 100BaseTX several stations (nodes) are connected
using a star topology according to the 10Base-T ETHERNET Standard.
Therefore, this manual only deals with the star topology, and the tree topology
for larger networks in more detail.
Star Topology
A star topology consists of a network in which all nodes are connected to a
central point via individual cables.
Fig. 10-4: Star Topology G012903e
A star topology offers the advantage of allowing the extension of an existing
network. Stations can be added or removed without network interruption.
Moreover, in the event of a defective cable, only the network segment and the
node connected to this segment is impaired. This considerably increases the
fail-safe of the entire network.
To Next Page
Loading...
