ABB AC 800F

4 Cabling the AC 800F
4-13
4.2.3 10BaseT (Full Ethernet)
Contrary to 10Base2 and 10Base5 networks, 10BaseT networks have a star topology
instead of a bus topology. Twisted-pair cables are used for data transmission.
Topology star topology, connection via hubs or
star couplers
Transmission medium UTP CAT 3, 4 and 5 with
RJ45 connector
STP CAT 3, 4 and 5 with
RJ45 connector
Transmission base band, 10 Mbit/s
Max. segment length 100 m
Max. number of nodes per segment 2
Max. number of nodes per network 1024
Minimum spacing between two nodes 2.5 m
Connection of nodes 2 nodes linked directly via cross cable
more than 2 nodes connected via hubs
and uncrossed cables
Coupling of segments via repeaters possible, see Section 4.2.12
Applications:
• Networks within one building
• Medium size installations
• Networks with medium or large number of nodes
• Installations with little or medium EMI