Specifications
Edition 3.0E, 2011/05
7. Communications 
This inverter is equipped with a po werful communications interface and 
options. Use “Pro Control” to monitor the status of your PV-Inverter. Also, 
qualified personnel can upgrade the firmware using the RS232 port. 
1.  RS232: To use the RS232 port, remove the RS232 cover on the bottom 
side of the inverter. It is a DB9 socket. The pin definition is 
Pin Functional Description 
1 N.C. 
2 TxD 
3 RxD 
4 N.C. 
5 Common 
6 N.C. 
7 N.C. 
8 N.C. 
9 N.C. 
N
N
.
.
C
C
.
.
m
m
e
e
a
a
n
n
s
s
“
“
N
N
o
o
C
C
o
o
n
n
n
n
e
e
c
c
t
t
i
i
o
o
n
n
”
”
2.  Optional communications port: This port is a very powerful extension. 
The inverter can accept a special card designed for the port only. The 
RS485 card is used to work with EZ logger and in multiple monitoring 
applications. For information of card details, please refer to the user 
manual of each individual card. To get the latest information, please 
contact with your local dealer or visit our website. 
3.  Firmware upgrade: To keep the firmware up to-date, use the RS232 port 
and supplied program to upgrade firmware. To do this, please contact 
your local service 










