Fronius Primo 4 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 confirmed at the hardware-verified rung and at no rung below it.

cross-referenced (XPF (Quantum Bit Solutions))

Imported from a third-party source and NOT verified by us — not even structure-checked. An unverified claim, shown so you can find the device; trust it no more than the source it came from.

point	address (0-based)	type	scale	unit
phase_voltage_ab_v	40076	F32BE	1	V
ac_current_a	40068	F32BE	1
ac_power_w	40088	F32BE	1	kW
ac_energy_wh	40098	F32BE	1	kWh
line_frequency_hz	40090	F32BE	1	Hz
enumerated_value_operating_state	40114	U16	1
cabinet_temperature_c	40106	F32BE	1	degC
bitmask_value_event_fields	40116	U32BE	1
phase_a_current_a	40070	F32BE	1
phase_b_current_a	40072	F32BE	1
phase_c_current_a	40074	F32BE	1
phase_voltage_bc_v	40078	F32BE	1	V

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.