Installation Manual
37
RS485-A RS485-B
X
K
7
Fig. 7-7
Location of RS485 terminals
Single-inverter communication
Figure below shows the communication for a single inverter. Connect the communication
port A1 and B1 to RS485/RS232 converter and then to the monitoring PC.
PC
RS232
RX+
RX-
TX+
TX-
6
7
8
9
5 4 3
2 1
RS485-232 converter
B
A
Top
：
A1
Bottom
：
B1
Shielding layer
Fig. 7-8
RS 485 communication for single inverter
Multiple-inverter communication
There are several communication connection methods for multiple inverters. The following
monitoring system solution is optional.
Logger, a data collection device, is recommended for the sake of better and quicker
communication, longer communication distance of RS485 bus, fewer errors, and more
types of communication interfaces.
