Controller Area Network |
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Cable Length, Wires and Terminators
The cable length depend on the selected band rate on the bus: how higher the speed, how shorter the bus.
Bus speed |
Cable type |
Cable resistance/m |
Terminator |
Bus Length |
50 kbit/s at 1000 m |
0.75 ...0.8
mm2 |
70 mOhm |
150 ... 300 Ohm |
600 .. 1000 m |
100 kbit/s at 500 m |
0.5 ...
0.6 mm2 |
< 60 mOhm |
150 ... 300 Ohm |
300 ... 600 m |
500 kbit/s at 100 m |
0.34 ...0.6
mm2 |
< 40 mOhm |
127 Ohm |
40 ... 300 m |
1000 kbit/s at 40 m |
0.25 ...0.34
mm2 |
< 26 mOhm |
124 Ohm |
0 ... 40 m |
In the devices of CD Systems the slope control of
the bus driver is active for baud rates 10 Kb, 20 kb and 50 kb.
RJ10 connector Cable part
Used by: CANopen
Type: RJ10
| Pin | Description |
Colour |
![]() |
|---|---|---|---|
1 |
V- | Black | |
2 |
CAN_L | Red | |
3 |
CAN_H | Green | |
4 |
V+ | Yellow |
Cable specification:
The 4- wire telephone cable comes with a resistance of 142 Ohm
/ 1000 mtr.
The cable capacity is aprox. 150 pF / mtr.
See also the 9-pole sub D to dual RJ10 connector 6148
RJ11 and RJ12 connector Cable part
Used by: CANopen
Type: RJ11 ,RJ12
| Pin | Description |
Colour |
![]() |
|---|---|---|---|
1 |
nc | - | |
2 |
V- | Black | |
3 |
CAN_L | Red | |
| 4 | CAN_H | Green | |
| 5 | V+ | Yellow | |
| 6 | nc | - |
Cable specification:
The 4- wire telephone cable comes with a resistance of 142 Ohm
/ 1000 mtr.
The cable capacity is aprox. 150 pF / mtr.
9-pole sub-D connectors Female cable part
Used by: CANopen
Type: 9-pole sub-D
| Pin | Description |
Description |
|
|---|---|---|---|
1 |
reserved | ||
2 |
CAN_L |
CANbus L | |
3 |
V- |
CAN gnd | |
4 |
reserved | ||
5 |
(CAN_shld) |
Optional CAN shield | |
6 |
(gnd) |
Optional CAN gnd | |
7 |
CAN_H |
CANbus H | |
8 |
reserved error line | ||
9 |
V+ |
CAN supply |
Connectors on devices have male contacts.
See also the 9-pole sub D to dual RJ10
connector 6148
for a perfect, fast and low cost CAN wiring system.
Hand wired connectors Female cable part
Used by: DeviceNet
Type: Screw type Weidmuller
| Pin | Description |
Color |
|
|---|---|---|---|
1 |
V- | Black | |
2 |
CAN_L | Blue | |
3 |
Drain | Bare | |
4 |
CAN_H | White | |
5 |
V+ | Red |
Connectors on devices have male contacts.
Sealed mini style connectors
Used by: DeviceNet
Type: ANSI/B93.55M-1981
| Pin | Description |
Color |
|
|---|---|---|---|
1 |
Drain | Bare | |
2 |
V+ | Red | |
3 |
V- | Black | |
4 |
CAN_H | White | |
5 |
CAN_L | Blue |
Connectors on devices have male contacts.
Sealed Micro style connectors
Used by: DeviceNet
Type: Lumberg style RKT 5-56/xm or equivalent
| Pin | Description |
Color |
![]() |
|---|---|---|---|
1 |
Drain | Bare | |
2 |
V+ | Red | |
3 |
V- | Black | |
4 |
CAN_H | White | |
5 |
CAN_L | Blue |
Connectors on devices have male contacts.
Micro style connectors
Used by: SDS
Type: Female round
| Pin | Description |
Color |
|
|---|---|---|---|
1 |
V+ | Brown | |
2 |
V- | Blue | |
3 |
CAN_L | White | |
4 |
CAN_H | Black |
Sealed mini style connectors
Used by: SDS
Type: Female round
| Pin | Description |
Color |
|
|---|---|---|---|
1 |
Shield | Bare | |
2 |
V+ | Brown | |
3 |
V- | Blue | |
4 |
CAN_H | Black | |
5 |
CAN_L | White |