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15
3.2.4.3 PIN Definition
External communication port
The PIN definition of an external communication port is shown as follows.
Table 7. External communication port PIN definition
Location schematic diagram Location Definition Remark
1 CAN1H
BCU communication, connect the
last high voltage box
（
Optional
）
2 CAN1L
3 CAN1H
BCU communication, connect the
next high voltage box
（
Optional
）
4 CAN1L
5 CAN2H
Inverter communication
6 CAN2L
7 DI+
Low voltage wake up
8 DI-
9 AC/L
AC input
10 AC/N
BMU communication port
The PIN definition of the BMU communication port is shown as follows.
Table 8. BMU communication port PIN definition
Location schematic diagram Location Definition Remark
1 V+
Battery module 24V power supply
2 V-
3 CAN0H
BMU communication, connect the last
battery module
4 CAN0L
5 V+
Battery module 24V power supply
6 V-
7 CAN0H
BMU communication, connect the next
battery module
8 CAN0L
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