Three-phase photovoltaic grid-connected inverter Monitoring communication
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RS485
EXT
3
2
1
4
3
2
1
4
1
red
+5V
485+
485-
GND
2
oran
ge
3
brown
4
black
Fig 7.2 Inverter 485 interface diagram Fig 7.3 Standard communication connector
How to connect standard RS485 communication monitoring to the inverter:
(1) Connect the communication connector configured for the inverter to the RS485 terminal of
the inverter, as shown in fig 7.4;
(2) Connect the outgoing wire of the communication connector to the user device correctly
Fig 7.4 Connect communication cable to the inverter
(3)
Please download the monitoring software “iMars WinExpert” and its operation instruction.
7.2 Optional communication
The optional communication modes supported by PV grid-connected inverter are Ethernet, Wifi
and GPRS. The optional communication modes must adopt the accessories shown in table 7-2.
Output all the running parameters of the inverter to the communication accessories via interface
“RS485/EXT”, and finally, connect to the upper computer monitoring system in standard Ethernet,
Wifi and GPRS signal, as shown in fig 7.1.