Port connection of COM communication:
PIN
Definition
Function
Remark
1
N/D
N/D
2
UC-A
RS485 -A differential signal
Inverter monitoring signal 485
3
UC-B
RS485 -B differential signal
4
EN+
RS485 + differential signal
Battery signal 485
5
EN-
RS485- differential signal
6
MET-A
RS485 -A differential signal
Intelligent counter signal 485
7
MET-B
RS485 -B differential signal
8
CAN-H
CAN high-speed data
CAN battery communication signal
9
CAN-L
CAN low-speed data
10
N/D
N/D
11
N/D
N/D
12
GND
Logical interface signal
(DRMS) Logical interfaces for Australia lower
than standard (AS4777), General Europe
(50549), Germany (4105)
13
D1/5
14
D4/8
15
D2/6
16
D0
17
D3/7
18
CT+
Positive output terminal of
current transformer
Current transformer communication signal (CT)
19
CT-
Negative pole of current
transformer output
20
N/D
N/D
10
