● If a Smart Dongle is replaced, add meter 2 through the Smart Dongle after
quick deployment.
● If meter 2 is disconnected, the PV output power and load power displayed on
the network management system and app will be abnormal.
● The energy ow diagram on the network management system displays the
total energy ow of the system, but not the energy ow of a single inverter.
● The energy ow diagram on the network management system does not
support the display of third-party inverters and their corresponding power
meters.
Figure 4-17 Networking with third-party inverters
● The RS485A and RS485B on meter 1 are connected to the RS485A2 and RS485B2 of the
COM port on the inverter, respectively. The RS485A and RS485B on meter 2 are
connected to the RS485A1 and RS485B1 of the COM port on the inverter, respectively.
● The communications cable of meter 2 (used to measure third-party inverter output) is
connected to the RS485-1 port on the Huawei inverter. RS485-2 port is used only to
connect the LUNA2000 and meter 1 (used for battery control)
● When meter 2 is connected, only one Huawei inverter can be connected to the third-
party inverter. In this case, multiple Huawei inverters cannot be cascaded through the
RS485-1 port.
(A) PV string
(B) DC switch (C) SUN2000
LUNA2000-(5-30)-S0
User Manual 4 Application Scenarios and Settings
Issue 15 (2024-01-12) Copyright © Huawei Digital Power Technologies Co., Ltd. 59
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