Huawei SUN2000 Series Quick Manual page 12

Smart Dongle Networking Scenario
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In the Smart Dongle networking scenario, the SmartLogger1000A cannot be connected.
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The Smart Power Sensor is necessary for export limitation. Only the DTSU666-H Smart Power
Sensor (provided by Huawei) can be used.
SmartLogger1000A Networking Scenario
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In the SmartLogger1000A networking scenario, the Smart Dongle cannot be connected.
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A maximum of 80 devices can connect to a single SmartLogger1000A, such as inverters, Smart
Power sensor, and EMI. You are advised to connect fewer than 30 devices to each RS485 route.
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The Smart Power Sensor is necessary for export limitation. Select the Smart Power Sensor
according to the actual project.
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To ensure the system response speed, the Smart Power Sensor is recommended to be
connected to a COM port separately from inverter COM port.
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