HI 800 101 HIMatrix Engineering Manual
5.4 Wiring
5.4.1 Safeethernet, Ethernet
Industrial standard cables can be subjected to extreme mechanical stresses. For Ethernet
communication Cat 5 cable (twisted pair or star-quad cable) or better is used.
The controllers communicate at 100 Mbit/s (Fast Ethernet) in full-duplex mode. They have
"auto cross-over" function and can be operated with a 1:1 cable as well as with a cross-over
cable.
The shield of an Ethernet cable must be earthed at both ends. If an RJ 45 connector is
used, it automatically connects the shield to the device case.
Wiring example Number
of plug
connector
pairs
Maximum
cable distance
between two
devices
31
3
1
2 100 m
31
3
1
2 100 m
31
3
1
3 100 m
31
3
1
3 100 m
3
1
31
4 100 m
31
3
1
4 100 m
Legend:
3
1
Device in case Connector Coupling (plug + socket)
Table 8: Wiring examples safeethernet, Ethernet
When using specified cables and plug connectors approved to 100 MHz the maximum cable
distance is 100 m between two devices with a maximum of four connector pairs. A combina-
tion of plug and socket is considered one pair.
Use optical fiber cables for greater distances. The total dimension of the network (several
devices) can be longer than the connection between two devices.
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