SMA 485PB-NR - Handbuch (Seite 20)

SMA Technologie AG Retrofitting the Communication Interfaces
Short Description PB-NR-IXX073014 Page 20
RS232 for a Sunny Boy type "SWR"
Wiring of an inverter with RS232 on a PC
Wiring of an inverter with RS232 on a Sunny Boy Control
RS232 Piggy-Back
Resistors with one black ring
must be removed for RS232
communication. Resistors can
be brown or blue.
Jumper may not be mounted
for RS232 communication
Terminal block for connec-
tion of the RS232 cable
3
5
2
3
5
2
Betrieb Operation Erdschluss Earth Fault
Störung
Failure
Photovoltaik-Stringwechselrichter Photovoltaic string inver ter
SWR 3000
GND
TXD
RXD
PC with
Sunny Data Control
3
5
2
3
5
2
Betrieb Operation Erdschluss Earth Fault
Störung
Failure
Photovoltaik-Stringwechselrichter Photovoltaic string inver ter
SWR 3000
GND
TXD
RXD
Sunny Boy Control
with RS232 Piggy-
Back on COM1