D Baud Rate Negotiation
Baud rate negotiation increases the communications rate between the inverter
and devices such as batteries and power meters, and between the inverter and
devices such as the Smart Dongles and the EMMA, solving or relieving
communication congestion.
● During device search in a new plant, the system automatically negotiates the
baud rate.
● When replacing or adding inverters, batteries, power meters, the Smart
Dongle, or the EMMA at an existing plant, you need to manually send local
commands on the FusionSolar app to reset the baud rate between devices
and negotiate a higher rate.
Users can send the baud rate negotiation commands on the FusionSolar app in three
networking modes: Inverter connected to the NMS directly, EMMA networking and Smart
Dongle networking.
Table D-1 Manual baud rate negotiation on the app
Networking
Mode
Scenario Operation
Inverter connected
to the NMS
directly
Replacing the
inverter
1. Use the FusionSolar app to locally
scan the QR code to connect to the
inverter.
2. Access the Communication
conguration screen, choose
RS485 > Baud Rate Negotiation >
RS485_2 > Baud Rate Negotiation,
and tap 9600 and Negotiate a
higher rate.
Replacing or
adding an
RS485_2 device
(such as a
battery or power
meter)
SUN2000-(8K, 10K)-LC0 Series
User Manual D Baud Rate Negotiation
Issue 01 (2023-09-15) Copyright © Huawei Digital Power Technologies Co., Ltd. 123
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