(3) PV system for 2 to 99 solar inverters with interface converter (IC) RS 485 / RS 232
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 connec-
ted together and read out using this con-
nection. In this case, there is a maximum
cable length of 500 m between
the interface converter and the furthest
solar inverter. The individual solar inverters
are connected together via the RS 485
interface.
PC
SSW
INVERTER
(2 bis 99)
INVERTER
(1)
PV
PV
RS 232
RS 485
RS 485+
RS 485+
RS 485–
RS 485–
RS 485+
RS 485+
RS 485–
RS 485–
131
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