Inovance MD500 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 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
running_frequency	28672	U16	0.01
frequency_reference	28673	U16	0.01
bus_voltage	28674	U16	0.1
output_voltage	28675	U16	1
output_current	28676	U16	0.01
output_power	28677	U16	1
output_torque	28678	I16	0.1
di_state	28679	U16	1
do_state	28680	U16	1
ai1_voltage	28681	U16	0.01
ai2_voltage	28682	U16	0.01
ai3_voltage	28683	U16	0.01
motor_temperature	28706	I16	1
ac_drive_running_state	28733	U16	1
current_fault_code	28734	U16	1

link settings as documented (unverified): RTU; baud 19200/115200; unit ID 1; FC 03,06; Supports Modbus-RTU slave communication protocol. Address range of the slaves is 1 to 247, and 0 is the broadcast address.

⚠ Never wire the AC drive while the power is on. Wait for a period of 10 minutes after the AC drive is powered off before starting any repair, maintenance or wiring work. — Starkest reads only; we never write a control register.

bench facts as documented (unverified)

terminals	485+, 485-, CGND
connector	Terminal block
isolation	Isolated input (with MD38TX1 card)
wiring notes	Uses MD38TX1 RS485 communication adapter with isolation.
max registers/read	12
broadcast	supported
protocol notes	Supports reading and writing of word-type parameters only. Does not support reading and writing of bytes or bits.
identification notes	Function parameters in groups F0 to FF and A0 to AF can be read/written. Group U can only be read.
power	Rated voltage input: 380 to 480 V, wide voltage range: 323 to 528 V. Three-phase AC.
environment	Harsh environments with high ambient temperature, dust, metal dust, salt, sulfuric acid, chlorine atmospheres require more frequent inspection.
certifications	CE, EMC directive (EN 61800-3, EN 55011, EN 61000-6-2), LVD directive (EN 61800-5-1)

generated by gemini:gemini-3.5-flash · harvested from https://www.efesotomasyon.com/inovance/w_MD500_kullan%C4%B1m_k%C4%B1lavuzu_v0.pdf (Inovance); 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.