Sunny Island
Installation & Operating Instructions
BWRI33-12:EE
- 50 -
SMA Regelsysteme GmbH
Please read chapter 8.3 carefully!
3.7.5 Assignment of COM3 Interface
The service interface COM3 can only be used as an RS232 interface. It is meant for
service, maintenance and necessary software updates. To be able to update the
software an additional PC programme 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)