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Setup and Procedures before Operation
6.3.2
CAN bus wiring
Applicable connector
Use a female D-sub 9-pin connector. For the signal layout of the connector please refer to section
3.1.2)
Applicable cable
Use a CAN bus cable that meets the following specifications.
Item
Cable Type
No. of Pairs
Conformance Standard
Cross-sectional area
Impedance
Tab. 6-2:
The following table shows the relation between bus length and cable cross section:
Bus length [m]
0 to 40
40 to 300
300 to 600
600 to 1000
Tab. 6-3:
Grounding of the twisted pair cable
For electromagnetic compatibility (EMC) it is recommended to ground the cable shield at both ends.
Fig. 6-2:
6 – 4
Transmission line
Shielded twisted pair cable
2
ISO 11898/1993
0.3 mm
120
Specifications of the CAN bus cable
Relation between bus length and cable cross section
CAN node
CAN_GND
CAN_L
CAN_SHLD
CAN_H
CAN_V+
Grounding resistance of
100
or less (Class D)
Connection of the CAN bus cable.
2
2
to 0.82 mm
or more (AWG22 to AWG18)
2
Cable cross section (mm
)
0.3 to 0.34
0.34 to 0.60
0.50 to 0.60
0.75 to 0.80
CAN node
CAN_GND
CAN_L
CAN_SHLD
CAN_H
CAN_V+
Grounding resistance of
100
Optional external supply for
transmission hardware
Length-related resistance (m /m)
70
60
40
26
CAN node
CAN_GND
CAN_L
CAN_SHLD
CAN_H
CAN_V+
or less (Class D)
MITSUBISHI ELECTRIC
Wiring
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