Sunny Island 4500
Installation & Operating Instructions
BWRI45-13-EE0304
- 73 -
SMA Regelsysteme GmbH
3.7.5 Assignment of COM3 Interface
The service interface COM3 can only be used as an RS232 interface. In addition to
control purposes of the “ecopower Mini-BHKW” (see Chapters 3.4.11 and 7.4) it is
used for service, maintenance and necessary software updates. To be able to update
the software, an additional PC program is required. Table 3.4 shows the pin assign-
ment.
PIN RS232
Signal
1 DCD
2 /RXD
3 /TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
Table 3.4:
Assignment of Sunny Island interface (COM3)