CPS 14-36kW SC/SCA 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
inverter_firmware_version	5	U16	0.01
total_lifetime_energy	22	U32BE	1	kWh
daily_energy	24	U16	0.1	kWh
power_factor	26	I16	0.001
max_active_power_daily	27	U16	0.1	kW
active_power	29	U16	0.1	kW
apparent_power	30	U16	0.1	kVA
grid_voltage_uab	31	U16	0.1	V
grid_voltage_ubc	32	U16	0.1	V
grid_voltage_uca	33	U16	0.1	V
grid_a_phase_current	34	U16	0.1	A
grid_b_phase_current	35	U16	0.1	A
grid_c_phase_current	36	U16	0.1	A
dc_voltage_mppt1	37	U16	0.1	V
dc_current_mppt1	38	U16	0.1	A
dc_voltage_mppt2	39	U16	0.1	V
dc_current_mppt2	40	U16	0.1	A
grid_frequency	43	U16	0.1	Hz
heatsink_temperature	44	I16	0.1	C
internal_temperature	45	I16	0.1	C
inverter_state	47	U16	1
permanent_fault_alarm	52	U16	1
warning_alarm	53	U16	1
fault0_alarm	54	U16	1
fault1_alarm	55	U16	1
fault2_alarm	56	U16	1
fault3_alarm	57	U16	1
fault4_alarm	58	U16	1
power_on_off_cmd	4096	U16	1
temporary_active_power_setting	4097	U16	0.1	%
temporary_power_factor_setting	4098	I16	0.001
temporary_reactive_power_setting	4099	U16	0.1	%

link settings as documented (unverified): RTU; baud 9600/19200; FC 03,04,06,16; Half-Duplex, Data Bits: 8

bench facts as documented (unverified)

connector	RS485
sentinel values	Not Implemented for an int16 is 0x8000. Not Implemented for a uint16 is 0xFFFF. Not Implemented for an int32 is 0x80000000. Not Implemented for a uint32 is 0xFFFFFFFF. Not Implemented for a string is 0x00.
model register	0x000A
serial register	0x0006
firmware register	0x0005
doc revision	1.0

generated by gemini:gemini-3.5-flash · harvested from https://www.chintpowersystems.com/wp-content/uploads/2020/06/CPS-Modbus-Comm-User-Manual.pdf (Chint Power Systems); manual-faithful — the document's claims, panel risk: ELEVATED — panel is not confident; 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.