Installation
Electrical installation
Wiring the CAN bus
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EDSMDAG EN 2.0
5.5.3 Wiring the CAN bus
Wiring must meet the following requirements:
ƒ The CAN cable complies with the specification acc. to ISO 11898−2.
ƒ The CAN cable has twisted cores (CAN_H, CAN_L) to avoid interferences on the bus
(Bus−Off, Bus−Heavy, etc).
ƒ When looping through the signals "CAN_HIGH" and "CAN_LOW", avoid double
crimping. For this purpose, the Public CAN is provided with two pins each.
ƒ Stubs are <0.2m. Ideally, stubs are avoided.
ƒ The cable length matches the data transfer rate.
ƒ The CAN cable runs along the LV on−board cable and is installed separately from the
power cables.
ƒ The CAN bus is completely wired. Unwired terminals are not permissible.
ƒ The first and last node of the CAN bus are connected to the integrated terminating
resistor.
High
Low
CAN
HCU
CAN
MOBILE 1
CAN
MOBILE 2
EMDAG0034a
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