SMA SI 4548-US - Manual (Page 64)

6 Electrical Connection SMA America, LLC
64 SI4548-6048-US-BE-en-20 Operating Manual
8. The RS485 data bus of the Sunny Island is terminated using a terminator. This terminator is
already plugged into the "ComSmaOut" pin connector. Only remove the plug if you want to
connect another communication device.
9. Plug the communication interface in slot (A).
Connecting the Sunny Island to the Sunny Boy and the Sunny WebBox with an
RS485 Cable
Connecting the Sunny Island to the Sunny Boy and the Sunny WebBox with
Separate RS485 Cables
Data Transmission Speed
The Sunny Island can be operated at different data transfer rates to communicate with external
devices. Set the parameter "250.06 ComBaud".
Setting the baud rate
If PV inverters are connected to the communication bus, then the baud rate must be set to 1,200
bps (default setting).