Veichi AC10 AC drive

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 confirmed at the hardware-verified rung and at no rung below it.

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
communication_given_frequency	12288	U16	0.01	Hz
communication_command_setting	12289	U16	1
state_of_ac_drive	12290	U16	1
ac_drive_fault_code	12291	U16	1
communication_given_upper_frequency	12292	U16	0.01	Hz
communication_torque_setting	12293	U16	0.1	%
fwd_max_frequency_limit_in_torque_control	12294	U16	0.1	%
rev_max_frequency_limit_in_torque_control	12295	U16	0.1	%
communication_given_pid_setting	12296	U16	0.1	%
communication_given_pid_feedback	12297	U16	0.1	%
fault_and_warning_code_reading	12304	U16	1
output_terminal_state	12312	U16	1
ao_output	12313	U16	1
given_frequency	8448	U16	0.01
output_frequency	8449	U16	0.01
output_current	8450	U16	0.1
input_voltage	8451	U16	0.1
output_voltage	8452	U16	0.1
mechanical_speed	8453	U16	1
given_torque	8454	I16	0.1
output_torque	8455	I16	0.1
pid_given	8456	U16	0.1
pid_feedback	8457	U16	0.1
output_power	8458	U16	0.1
bus_voltage	8459	U16	0.1
module_temperature_1	8460	I16	0.1
module_temperature_2	8461	I16	0.1

link settings as documented (unverified): RTU; default 9600 8N1; unit ID 1; FC 03,06; When F11.30 selects the external keyboard, the MODBUS bus (master/slave) cannot be used.

bench facts as documented (unverified)

terminals	A+, B-
termination	120Ω termination resistor selectable via switch S3
wiring notes	RS485 differential communication
response timeout	1000 ms
inter-frame delay	0 ms
protocol notes	Interval over 1.5 byte before ending clears half-baked info. Interval under 3.5 byte time is considered continuation of former frame. Writing to 0x00XX writes to RAM, writing to 0x10XX writes to EEPROM.
power	S2: Single-phase 220V, T2: Three-phase 220V, T3: Three-phase 380V
environment	-10 ~ +50°C (derating above 40°C, max 60°C), 5% to 95% RH (no condensation), altitude < 1000m, vibration 5.9 m/s2 (0.6 g)
certifications	IEC61800-2

field reports — community-sourced, unverified (checked 2026-06-11)

confirmed: Baud rates [1200, 2400, 4800, 9600, 19200, 38400, 57600], default baud 9600, default unit ID 1, framing RTU, parity N, stop bits 1 — confirmed by VEICHI AC10 Series Frequency Inverter Manual
confirmed: When F11.30 selects the external keyboard, the MODBUS bus (master/slave) cannot be used — confirmed by VEICHI AC10 Series Frequency Inverter Manual
confirmed: RS485 differential communication terminals A+, B- and 120Ω termination resistor selectable via switch S3 — confirmed by VEICHI AC10 Series Frequency Inverter Manual
confirmed: Power models S2 (Single-phase 220V), T2 (Three-phase 220V), and T3 (Three-phase 380V) — confirmed by VEICHI AC10 Series Frequency Inverter Catalog and Quick Start Guide
confirmed: Register addresses 12288 (0x3000) for given frequency, 12289 (0x3001) for command setting, 12290 (0x3002) for state of AC drive, and 12291 (0x3003) for fault code — confirmed by VEICHI AC10 Series Frequency Inverter Manual
confirmed: Register addresses 8448 (0x2100) for given frequency, 8449 (0x2101) for output frequency, 8450 (0x2102) for output current, and 8451 (0x2103) for input voltage — confirmed by VEICHI AC10 Series Frequency Inverter Manual

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.

If your device isn't here, upload its register map. Generation is free, and the connector keeps the rung it earns under testing.

To prove a connector against your own device, order hardware verification. If it doesn't verify, you don't pay.

Platform builders can license the verified library: machine-readable maps, the firmware matrix, API access.