Connecting The Communications Cable; Communication Mode Description - Huawei SUN2000-55KTL Series User Manual

SUN2000-(55KTL, 60KTL) Series
User Manual

5.7 Connecting the Communications Cable

5.7.1 Communication Mode Description

RS485 Communication
The SUN2000 can connect to the SmartLogger over RS485 or to a PC through the
SmartLogger to implement communication. You can use the SUN2000 app, SmartLogger,
embedded WebUI, or the network management software (such as the NetEco) on the PC to
query information about the SUN2000, such as energy yield, alarms, and running status.
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Figure 5-19 Communication mode for a single SUN2000
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Figure 5-20 Communication mode for multiple SUN2000s
Issue 06 (2020-01-03)
Figure 5-19 shows the communication mode for a single SUN2000.
Figure 5-20 shows the communication mode for multiple SUN2000s.
If multiple SUN2000s are used, connect all the SUN2000s in daisy chain mode over an
RS485 communications cable.

The RS485 communication distance between the SUN2000 at the end of the daisy chain and the
SmartLogger cannot exceed 1000 meters.
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If multiple SUN2000s need to communicate with one another and are connected to a PC over the
SmartLogger2000, a maximum of six daisy chains can be configured.

To ensure the system response speed, it is recommended that the number of devices on each daisy
chain be less than 30.
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