Settings SMA Solar Technology AG
58 SWebBox-TEN101232 Technical Description
10.2.1 Setting SMA-COM
If the devices of your PV plant are to communicate with the Sunny WebBox via SMA-COM, you must
configure this communication method.
1. Select "Plant > Settings" in the user interface.
2. Select the data protocol of the devices in the "Transfer protocol" field. The following selections
are possible for the listed inverter types:
3. Select the inverter baud rate in the "Baud rate" field (not if "Ethernet" is set as the communication
method).
4. Select [Save].
☑ The PV plant communication has been set.
Data Transmission Protocols
SMA inverters use proprietary protocols for data transmission.
Since 2000, the inverters have used the "SMA-NET" data protocol. Older inverters use the
"SUNNY-NET" data protocol. The SMA-NET and SUNNY-NET data protocols cannot be
used together in a PV plant.
"SMA-NET" • Sunny Boys of type SWR, version BFR 8.22 or above
• All type SB Sunny Boys
• All Sunny Mini Central devices
• All Sunny Island devices
• All Sunny Centrals
•Sunny SensorBox
"SUNNY-NET" • Sunny Boys of type SWR prior to version BFR 8.22
Standard baud rate
If not all devices operate using the typical SMA baud rate setting of 1200 baud,
communication problems may occur. If necessary, adjust the baud rate.
"1200" All SMA devices
"9600" Reserved for future developments
"19200" Reserved for future developments
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