SMA America, LLC
Commissioning
User Manual
SWebBox-BUS-eng-111033
37
6.8.2 Connecting the Sunny WebBox to the RS485 Communication
Bus
This section describes how to connect the Sunny WebBox to the RS485 communication bus. It is
assumed that the Sunny WebBox is located at the end of the RS485 communication bus.
1. Connect cables to the RS485 bus nodes as described in the bus node manual.
2. Shorten the cable sleeve of the RS485
communication cable on the side of the WebBox by
1
1
⁄
2
in. (40 mm).
3. Remove shielding until flush with cable sleeve.
4. Strip approx.
1
⁄
4
in. (6 mm) of the insulation from the ends of the insulated conductors.
RS485 cabling and pin assignment in the system
See the RS485 cabling plan poster for the system cabling and pin assignment.
Connect the insulated conductors of the cable correctly to the plug connector
Note the color of the insulated conductors of the communication cable.
2 | D+ ________________________
5 | GND ________________________
7 | D- ________________________
1/4 in.
(6 mm)
1 1/2 in
