Fieldbus Connection Via The Ethernet Interface - WAGO 750 Series Manual

3.3 Fieldbus Connection via the Ethernet Interface

An RJ45 connector is used to connect the coupler to the fieldbus. The RJ45
socket of the Linux fieldbus coupler is wired in accordance with the
100BaseTX requirements. It is mandatory to use a twisted pair cable of
category 5 as a connecting cable. S-UTP (Screened Unshielded Twisted Pair)
cables and STP (Shielded Twisted Pair) cables with a maximum segment
length of 100 m (328 feet) can be used.
The connection point is lowered in such a way that after a connector is
inserted, installation in an 80 mm high switchgear cabinet is possible.
The electrical isolation between the fieldbus system and the electronics is
provided by DC/DC converters and optocouplers in the fieldbus interface.
Fig. 3-3: Fieldbus connection and pin assignment, RJ45 plug
Attention
The bus connection is only approved for use in LAN networks, not for the
connection of telecommunication lines!
WAGO-I/O-SYSTEM 750
Linux Fieldbus Coupler
Fieldbus Connection via the Ethernet Interface
8
7
6
5
4
3
2
1
Linux Fieldbus Coupler 750-860
Contact Signal
1 TD +
2 TD -
3 RD +
4
5
6 RD -
7
8
• 45
Description
Transmit +
Transmit -
Receive +
Not assigned
Not assigned
Receive -
Not assigned
Not assigned
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