Installation and Operation Manual
24
7 Communication Interface
This product provides RS232 and RS485 communication modes,
WLAN communication optional.
7.1 RS232
There is water proof RS232 (DB9 type) communication port. Please
open the water proof cover before using RS232 port. Single inverter can
be monitored by computer through RS232 interface. The cable length
between inverter and the computer should be less 15M. The software
of the inverter can be upgraded through this port as well.
The pin definitions of the RS232/RS485 port:
RS23
RS485
Pin
Signal Assignment
Signal Assignment
1
N.C.
(A)T/R+
2
TxD
(B)T/R-
3
RxD
N.C
4
N.C.
N.C
5
Common
Common
6
N.C.
N.C
7
N.C.
N.C
8
N.C.
N.C
9
N.C.
7.2 RS485
RS485 port is used for multiple inverters’ communication. The inverter
is configured 1 optional RJ45 connector. As RS485 communication
port, the RJ45 is convenient for multi inverters’ connections and
inputs, up to 32 sets of inverters can be communicated simultaneously
through one cable, but the length of connection cable can not exceed
1000
M.
RS485 can be used for inverter communications. Inverter comes with a
RJ45 port which can be communication port of RS485.Max distance is
1000 meters.