Furuno M12-05BM+05BF-010 Design Manual page 17

Fig.41 shows a typical Furuno CAN bus network by using a junction box FI-5002.
12 Vdc
To connect the internal termination resistor to the end of the network bus, set the jumper block
as below.
1) When no backbone cable is connected, R1 and R2 are set to ON position.
2) When one backbone cable is connected, either R1 or R2 is set to ON position.
3) When two backbone cables are connected, R1 and R2 are set to OFF position.
The FI-5002 is added anywhere along the network backbone. A maximum of three FI-5002 is
connected in series.
CN2
12 Vdc
FI-5002
CN1 CN2 CN3 to CN5
MAX. 6 m
Device
Device
Fig.41 Typical connection on FI-5002
Jumper block
CN1
CN3
PWR
cable
Drop cables
Fig.42 Internal terminators in FI-5002
FI-5002
CN2
Device
Fig.43 Network with FI-5002 and T-connector
CN2
: Internal terminator
(Max. 6 devices)
: Resistor is disconnected. (OFF)
: Resistor is connected. (ON)
R2
CN5
CN4
Device
Device
T-connector
17
Furuno CAN bus Network Design Guide
R1
CN2
Backbone
cables
Terminator