WAGO 750 Series - Fieldbus Connection Via the Ethernet Interface

Linux Fieldbus Coupler 750-860 • 45
Fieldbus Connection via the Ethernet Interface
WAGO-I/O-SYSTEM 750
Linux Fieldbus Coupler
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.
Contact Signal Description
1 TD + Transmit +
2 TD - Transmit -
3 RD + Receive +
4 Not assigned
5 Not assigned
6 RD - Receive -
7 Not assigned
1
2
3
4
5
6
7
8
8 Not assigned
Fig. 3-3: Fieldbus connection and pin assignment, RJ45 plug g034201d
Attention
The bus connection is only approved for use in LAN networks, not for the
connection of telecommunication lines!