SMA WEBBOX-BT-20 Installation - Manual (Page 14)

Product Description SMA Solar Technology AG
14 SWebBox20-IA-en-12 Installation Manual
The Sunny WebBox has the function of a grid-forming device (master device) in the Bluetooth plant.
Master devices are communication products which form the structure of the Bluetooth PV plant and
collect, evaluate and process data. Unlike other master devices, the Sunny WebBox can establish up
to five uplinks, meaning that it can directly connect to five devices simultaneously. It can also assume
the function of a slave/root node and be involved in establishing a Bluetooth network. In this way,
the Sunny WebBox can connect multiple groups of inverters to one another that would not otherwise
have had a Bluetooth connection.
The number of devices which the Sunny WebBox can manage depends on the number of master
devices in the Bluetooth network with the same NetID. If the Sunny WebBox is the only Master in the
Bluetooth network, the Sunny WebBox can manage up to 50 devices. If two masters are present in
the Bluetooth network (e.g. Sunny Explorer or Sunny Beam with Bluetooth), a maximum of 25 devices
can be managed by the Sunny WebBox. A maximum of one Sunny WebBox with Bluetooth is
allowed in a Bluetooth network with the same NetID. Additional information about SMA Bluetooth
Wireless Technology can be found in the download area at www.SMA-Solar.com.
4.2 Type Label
The type label clearly identifies the Sunny WebBox. The type label can be found on the back of the
enclosure.
Item Description Explanation
A Type Device type
B Serial number Serial number of the device
C MAC Address MAC address of the device
D Version Hardware version of the device