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30 User Manual
RS-232 port. Thus this method is generally used for three inverter’s
communication, for examples, software updating and serviceman’s testing.
6.2.2. RS-485/422 Communication
RS-485/422 is generally for multi inverters’ communication. It can communicate
with and up to 32 inverters could communicate at the same time, but wire length
should be
≤ 1200 m. Connect the system as blow (Figure 6
-2), user can easily
monitoring the PV power station.
RS485/422
USB To RS485/422
USB
Figure 6-2 RS-485/422 Communication Diagram
PIN1
TXD+_RS-485/422
PIN2
TXD-_RS-485/422
PIN3
RXD+_RS-485/422
PIN4
GND
PIN5
PIN6
RXD-_RS-485/422
PIN7
+7V/DC
PIN8
Notes:
The wires connection sequence of two ends of a RS-485/422 cable is the
same.
2 If customers communicate with inverter via RS-485/422, you can buy
USB to RS-485/422 converters and install pvcs software.
3 TX termination of inverter connect with RX termination of USB to
RS-485/422 converters, RX termination of inverter connect with TX
termination of USB to RS-485/422 converters.
6.2.3. WiFi/GPRS/Ethernet Communication
TRB
inverters
can be communicated with
WiFi/ GPRS/ Ethernet
. Trannergy can