45
Cables, Connectors, and Related Devices Section 2-3
Communications Cable and Communications Distance
Note Thin cable includes the cables with shielded connectors attached.
Cable Max. network
length
Max. branch
line length
Max. total branch line
length
Thick cable At 500 kbps: 100 m
At 250 kbps: 250 m
At 125 kbps: 500 m
6 m At 500 kbps: 39 m
At 250 kbps: 78 m
At 125 kbps: 156 m
Thin cable
(See note.)
100 m
Flat cable At 500 kbps: 75 m
At 250 kbps: 150 m
At 125 kbps: 265 m
6 m At 500 kbps: 35 m
At 250 kbps: 48 m
At 125 kbps: 135 m
Wire type Color Function Symbol
Signal wires Blue Communications signal, Low CAN L
White Communications signal, High CAN H
Power wires Red Communications power, positive V+
Black Communications power, negative V−
Shield wire --- Shield S
Conductor
No.
Insulation
color
Application Nominal
cross-
section
Conductor
resistance
(Ω/km)
Allowable
current (A)
1RedV+
(communica-
tions power sup-
ply positive side)
0.75 mm
2
(AWG19)
25.0 max. 5 max.
2 White CAN H
(signal high)
0.5 mm
2
(AWG21)
37.5 max. ---
11.2 mm to 12.1 mm
outside diameter
Woven shield
Shield wire
Signal wires
(Blue and white)
Power wires
(Red and black)
Signal wires
(Blue and white)
Power wires
(Red and black)
Shield wire
Woven shield
6.9 mm outside diameter
Red:
V+
Black:
V−
White:
CAN H
Blue:
CAN L
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