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RS485 network connection:
When the inverters are monitored via the RS485 communication, the unique RS485
address for each inverter can be set through the LCD interface. Up to 31 inverters
can be connected together in the RS485 communication network. The Daisy-chain
topology is recommended for the RS485 network connection, as shown in Figure
3-38. Other communication topologies, such as the star networks, are not
recommended.
1 2
N
Datalogger
S402
OFF
S402
OFF
S402
ON
Figure 3-38 R485 network connection
If there are multiple inverters in the RS485 networking, the selector switch S402 of
the last inverter in the daisy chain should be in ON position to have the 120ohm
terminal resistor enabled while keeping the selector switch S402 of other inverters in
OFF position to disable the terminal resistor.
.