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(5) Local link for up to 99 Solar Inverters (IT or USB)
INVERTER
(3)
INVERTER
(2)
INVERTER
(1)
PC
RS485
RS485
RS485
SUB-D9
connector
SPARE
RS485MATCH
SPARE
RS485MATCH
SPARE
RS485MATCH
IT
SUB-D9 hub
PC
USB
USB
Alternatively USB
IT
Ad (5): Local Link for up to 99 Solar
Inverters
With this interconnection, up to 99 Solar
Inverters can be cross-linked and read out.
That results in a maximum RS485 cable
length of 500 m between the Solar
Inverters and the interface transformer.
The RS485 signal is transferred from the
first Solar Inverter in the row into the
interface transformer with the following
allocation: «RS485 +» to «DATA+» and
«RS485 -» to «DATA-».
The interface transformer transforms the
RS485 signal into RS232. It is linked to the
PC with cable type 2 (standard modem
cable). With the Solar Inverter that is fur-
thest away from the interface transformer,
the jumper RS485 MATCH must be closed.
(Sunways cable type 2,
modem cable female / male)
(Sunways cable type 5,
USB device cable)
(twisted pair
cable)
BP13370_NT_10000_englisch 23.11.2005 17:40 Uhr Seite 52