20
USB to RS485 tool
4.4
Communication with INVERTER or MPPT
Before using the battery system, the inverter, the MPPT and the battery system must be connected by
communication lines. Connect the RS485 communication port of the battery pack to the inverter and
MPPT, After all external wiring harnesses are connected, they can work normally after starting up.
The battery has two independent RS485 isolated communication interfaces, and the default
communication baud rate is 9600bps. One RS485 interface is used as the internal communication
port for battery parallel (RS485 port) or to view the detailed information of the battery through the
host computer software(Master port). One RS485 interface is used for external inverter
communication, and this port can also be used as the CAN communication port (CAN/RS485 port).
4.4.1 Master/RS485/CAN Ports Introduction
Internal Master/RS485 parallel communication port. As shown in the below
：
Master/RS485 to PC or Parallel Port Master/RS485 Port Define
Connected externally to the inverter communication port of RS485/CAN. It can be compatible with
multiple inverter protocols. As shown in the figure belows:
CAN/RS485 Port Define
RS485-- 8p8c vertical RJ45 socket is adopted
RJ45 PIN
Define
1
、
8
RS485-B1
2
、
7
RS485-A1
4
CANH
5
CANL
6
GND
NOTE:
Communication line is required for RS485 or CAN communication.
RS485-8P8C-RJ45
RS485-8P8C-RJ45
RJ45 Pin
Definition
RJ45 Pin
Definition
1
、
8
RS485-B
9
、
16
RS485-B
2
、
7
RS485-A
10
、
15
RS485-A
3
、
6
GND
11
、
14
GND
4
、
5
NC
12
、
13
NC