Furuno CAN bus Network Design Guide
5
Table 3 Wire colors of heavy cable
Name Pair
Color Size
Pin#
Shield Drain Bare
18AWG 1
NET-S Power Red
16AWG 2
NET-C Power Black 16AWG 3
NET-H Signal White 18AWG 4
NET-L Signal Blue
18AWG 5
Light cable
The light cable is five-wire constructed with two individually twisted-shielded pairs
enclosed by an overall shield with a shield drain wire connecting all three shields.
Table 4 shows wire colors of the light cable (6 mm diameter, MAX. 1 A).
Table 4 Wire colors of light cable
Name Pair
Color Size
Pin#
Shield Drain Bare
22AWG 1
NET-S Power Red
22AWG 2
NET-C Power Black
22AWG 3
NET-H Signal White
24AWG 4
NET-L Signal Blue
24AWG 5
1.4 Network Connector
Furuno CAN bus network uses NMEA2000 standard 5-pin connectors for the network
connections: “Mini” for the heavy cable and “Micro” for the light cable. Note that FI-50 series
uses the L-type Micro connector.
Table 5 and Figs.11 to 14 show Furuno CAN bus connector pin functions and face views.
These connectors comply with NMEA2000 LTW connector standard.
Table 5 Pin function of Furuno NMEA 2000 LTW connector
Pin No.
Function
Color
1 Shield
Bare
2
NET-S (Power supply positive, +V)
Red
3
NET-C (Power supply common, -V)
Black
4 NET-H
(CAN-H)
White
5 NET-L
(CAN-L)
Blue
Fig.11 Female Mini connector
Fig.12 Male Mini connector
5
4
3
2
1
25.0 mm
1
2
3
4
5
25.0 mm
10 mm
