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Wiring
Connection and wiring > AC500
Fig. 19: Pin assignment of RJ45 sockets
6.3.1.5.3
Cable types
Crossover cable
Crossover cables are for a direct Ethernet connection of two terminal devices as the simplest
variant of a network. From transmission lines of the first station to the reception lines of the
second station.
Fig. 20: Wiring of a crossover cable
Straight-through
For networks with more than two subscribers, hubs or switches have to be used additionally for
cable
distribution. These active devices already have the crossover functionality implemented which
allows a direct connection of the terminal devices using straight-through cables.
Fig. 21: Wiring of a straight-through cable
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Pair 2
Pair 3
Pair 1
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T3
R3
T2
R1
T1
R2
T568A
Particular use
Crossover cables are needed only for a direct Ethernet connection without
crossover functionality. In particular for AC500 modules in product life cycle
phase "Classic".
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CAUTION!
Risk of communication faults!
When using inappropriate cables, malfunctions in communication may occur.
Only use network cables of the categories 5 (Cat 5, Cat 5e, Cat 6 or Cat 7) or
higher within PROFINET networks.
3ADR011074, 1, en_US
Pair 4
Pair 2
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T4
R4
T3
Pair 3
Pair 1
Pair 4
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R3
T2
R1
T1
R2
T4
T568B
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R4
2023/03/03
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