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Fieldbus Communication
WAGO-I/O-SYSTEM 750
750-306 DeviceNet
TM
Fieldbus Coupler
Manual
Version 2.0.0
Note information about connection data lines!
Route data lines separately from all high-current cables.
Additional Information
The detailed specification regarding cable types is available on the Internet at:
In the following table, the permitted cable length is represented based on the baud
rate. A distinction is made between the maximum lengths for transmission with
thick and thin cable.
Table 45: Maximum bus lengths dependent on preset baud rate
Baud rate
Bus length
Drop Cable Length
Thick + Thin Cable
Thick
Cable only
Thinn
Cable only
maximum cumulated
500 Kbit/s L
Thick
+ L
Thin
≤ 100 m (328 ft)
100 m
(328 ft)
100 m
(328 ft)
6 m
(19.6 ft)
39 m
(127.9 ft)
250 Kbit/s L
Thick
+ 2.5 • L
Thin
≤ 250 m (820.2 ft)
250 m
(820.2 ft)
100 m
(328 ft)
6 m
(19.6 ft)
78 m
(255.9 ft)
125 Kbit/s L
Thick
+ 5 • L
Thin
≤ 500 m (1640.4 ft)
500 m
(1640.4 ft)
100 m
(328 ft)
6 m
(19.6 ft)
156 m
(511.8 ft)
Specifying maximum cable lengths ensures that communication is possible
between two nodes located at maximum distance to each other (worst case).
10.1.1.2 Cabling
The connection of a WAGO fieldbus node to the DeviceNet
TM
bus cable is made
by the included 5-pole plug, Series 231
(MCS)
.
Figure 44: Plug Assignment for the Fieldbus Connection, Series 231
(MCS)
For wiring with shielded cable, the connector is assigned the connections V+, V-
for the power supply and CAN_High, CAN_Low for data transmission
The 24 V field bus supply is fed by an external fieldbus network power supply.
CAN_High and CAN_Low are two physically different bus signal levels. The
cable's shielding is connected to the “drain” connection. This is terminated to PE
