Sunway NT 2600 - Manual (Page 41)

(3) PV system for 2 to 99 solar inverters with interface converter (I C)
Connection to PC via RS 485 / RS 232
In order to connect several solar inverters to a
PC, the RS 485 signal is looped through from
inverter to inverter, until it is led into the inter-
face converter. From here, the RS 232 signal is
conducted to the PC. Jumper JP400 is connected
to the solar inverter that is furthest away
from the interface converter. It must be open
for all other solar inverters.
Stripped length: 11 mm
Jumper JP400: see above
(3) Up to 99 solar inverters can be con-
nected together and read out using this
connection. In this case, there is a maxi-
mum cable length of 500 m between 117
PC
I C
INVER
TER
(2 to 99)
INVER
TER
(1) PV
PV
RS 232 RS 485
RS 485+ RS 485+ RS 485– RS 485–
GND_G
TX RX
GND_G
TX
2
RX
2
RS 485+ RS 485+ RS 485– RS 485–
the interface converter and the furthest
solar inverter. The individual solar inverters
are connected together via the RS 485
interface.