Huawei SUN2000 inverter

Register map(s) for this device, each at the trust rung it earned. Addresses are 0-based as on the wire; word order and scaling are only confirmed at the hardware-verified rung.

interop-verified

Read + decoded cleanly over a real network vs an independent third-party Modbus test server (transport and framing; reads are remapped into the server's register window, so the map's own addresses are NOT exercised). Does NOT prove word order/scaling against the actual device.

point	address (0-based)	type	scale	unit
model_id	30070	U16	1
pv_string_count	30071	U16	1
mppt_count	30072	U16	1
rated_power	30073	U32BE	0.001	kW
max_active_power	30075	U32BE	0.001	kW
max_apparent_power	30077	U32BE	0.001	kVA
pv1_voltage	32016	I16	0.1
pv1_current	32017	I16	0.01
pv2_voltage	32018	I16	0.1
pv2_current	32019	I16	0.01
pv3_voltage	32020	I16	0.1
pv3_current	32021	I16	0.01
pv4_voltage	32022	I16	0.1
pv4_current	32023	I16	0.01
input_power	32064	U32BE	0.001
grid_voltage_ab	32066	U16	0.1
grid_voltage_bc	32067	U16	0.1
grid_voltage_ca	32068	U16	0.1
phase_a_voltage	32069	U16	0.1
phase_b_voltage	32070	U16	0.1
phase_c_voltage	32071	U16	0.1
phase_a_current	32072	U32BE	0.001
phase_b_current	32074	U32BE	0.001
phase_c_current	32076	U32BE	0.001
active_power	32080	U32BE	0.001
reactive_power	32082	U32BE	0.001
power_factor	32084	I16	0.001
grid_frequency	32085	U16	0.01	Hz
efficiency	32086	U16	0.01	%
internal_temperature	32087	I16	0.1	°C
insulation_resistance	32088	U16	0.001	MΩ
device_status	32089	U16	1
accumulated_energy_yield	32106	U32BE	0.01	kWh
daily_energy_yield	32114	U32BE	0.01	kWh

link settings as documented (unverified): RTU/TCP; unit ID 0; FC 03,06,16,43,65; Modbus-TCP uses port 6607 by default. Slave address range is 1-247 for RTU, and 0 is used by default for TCP to access the directly connected slave node.

bench facts as documented (unverified)

wiring notes	Supports physical media such as MBUS, RS485, WLAN, FE, and 4G.
max registers/read	125
broadcast	supported
protocol notes	If the exception code is 0x06, resend the request after 10 seconds. A request can be resent for no more than six times.
model register	30000
serial register	30015
firmware register	31025
identification notes	Manufacturer name: HUAWEI, Product code: SUN2000
FC 43 device ID	supported
doc revision	Issue 08, Date 2024-11-07
firmware applicability	SUN2000MA V100R001C00SPC166

generated by gemini:gemini-3.5-flash · harvested from https://forum.iobroker.net/assets/uploads/files/1732790783983-sun2000ma-v100r001c00spc166-modbus-interface-definitions.pdf (Huawei); manual-faithful — the document's claims, panel risk: LOW — panel concurs, no field disagreements; proved interop-verified on 2026-06-10 · recorded 2026-06-10

The trust ladder

Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.

generated — A prompt produced it. Unproven — anyone can regenerate this.
structure-verified — Decode path is structurally sound (addresses, widths, finite values). Does NOT prove word order or scaling.
interop-verified — Read + decoded cleanly over a real network vs an independent third-party Modbus test server (transport and framing; reads are remapped into the server's register window, so the map's own addresses are NOT exercised). Does NOT prove word order/scaling against the actual device.
simulator-verified — Decoded correctly against a protocol emulator seeded with known-true values — catches word-order/scaling errors vs the emulator, not the physical device.
hardware-verified x1 — Matched a real device with operator-attested readings as ground truth — the only rung that confirms word order + scaling on the wire.

Have a device that isn't here? Upload its register map — generation is free, and the connector earns its rung by being proven, not claimed.

Need it proven on your own device? Hardware verification — if it doesn't verify, you don't pay.

Building a platform? License the verified library — machine-readable maps, firmware matrix, API access.