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COM port connection
1. COM port introduction
Icon
P1
(DRM Port)
P2
(Parallel
Port)
P3
152
P2
15
13
11
P4
16
14
12
PIN
PIN Definition
1
DRM1/5
2
DRM2/6
3
DRM3/7
4
DRM4/8
5
+3.3V_COM
6
COM/DRM0
7
GND_COM
8
GND_COM
1
REMOTE_485A
2
REMOTE_485B
3
GND_COM
4
PARALLEL_SYN2
5
PARALLEL_SYN1
6
EPSBOX_RELAY_VCC
7
PARALLEL_CANL
8
PARALLEL_CANH
1
2
3
4
5
GND_COM
6
GND_COM
7
REMOTE_485A
8
REMOTE_485B
7
5
3
1
9
10
8
6
4
2
Parallel synchronization
/
/
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Communication with
SolaX's Datahub, EV
Charger, Adapter Box and
other internal devices
P1
P3
Function
DRM
RS485
/
signal
/
Parallel CAN
/
/
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