TECO Westinghouse EV 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
operation_command	230	U16	1
frequency_command_write	231	U16	0.01	Hz
remote_keypad_used	232	U16	1
operation_status	239	U16	1
fault_description	240	U16	1
sequence_input_status	241	U16	1
frequency_command_read	242	U16	0.01	Hz
output_frequency	243	U16	0.01	Hz
output_voltage_command	244	U16	0.1	V
output_dc_voltage_command	245	U16	1	V
output_current	246	U16	0.1	A
pid_feedback_value	247	U16	0.1	%
pid_input_value	248	I16	0.1	%
tm2_ain_input_value	249	U16	1	%
keypad_ain_input_value	250	U16	1	%

link settings as documented (unverified): RTU/ASCII; FC 03,06,08,16; Supports RS485 and RS232 protocols. Frame length maximum 80 bytes.

bench facts as documented (unverified)

terminals	RSA, RSB
termination	Terminate the communications line with a (120 ohm, 1/4 watt) resistor at both ends.
wiring notes	RS-485 or RS232 interface
response timeout	400 ms
broadcast	supported
protocol notes	Drive response time is 10ms. Retries a maximum of two times on timeout or checksum error, displaying 'ERR6' if error persists.
doc revision	Rev. 1.00

generated by gemini:gemini-3.5-flash · harvested from https://www.tecowestinghouse.com/PDF/ev_modbus_manual.pdf (TECO Westinghouse); 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.