Gree GMV-120WM/B-F

GMV5 D.C INVERTER MULTI VRF SERVICE MANUAL
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2.1.4.3 Introduction of Optoelectronic Isolated Converter
(1)Function Introduction
The optoelectronic isolated converter is designed to convert the RS232 signal from the computer
serial port into RS485 signal. It is only used when the user's BMS system uses RS232 communication
mode.
(2) Appearance
NOTE:
Actual product prevails. The picture is for reference only.
(3) Interfaces and LEDs
POWER
RX
TX
V+ V- E RS232
Power cable
connector
DB9 Female Head
Connect the PC COM
R+ R-
RS485 cable connector
Data receiving
LED
C53
Power LED
Data transmitting
LED
A
B