verified connector library

Fuji FRENIC RS-485 (Mini/Eco/Multi/HVAC)

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.

pointaddress (0-based)typescaleunit
frequency_command_pu1793I161
frequency_command_hz1797U160.01
operation_command1798U161
frequency_reference_pu2049I161
frequency_reference_hz2053U160.01Hz
output_frequency_pu2054I161
torque_real_value2055I160.01%
torque_current2056I160.01%
output_frequency_hz2057U160.01Hz
input_power2058U160.01%
output_current_effective_value2059U160.01%
output_voltage_effective_value2060U161V
operation_command_m2061U161
operation_status2062U161
cumulative_operation_time2068U161h
dc_link_circuit_voltage2069U161V
motor_temperature2070I161°C
heat_sink_temperature2110U161°C
load_factor2111I160.01%
motor_output2112I160.01%
operation_status_w3841U161
frequency_reference_w3842U160.01Hz
output_frequency_before_slip_compensation3843U160.01Hz
output_frequency_after_slip_compensation3844U160.01Hz
output_voltage_w3846U160.1V
torque_w3847I161%
dc_link_circuit_voltage_w3911U161
heat_sink_maximum_temperature3913U161

link settings as documented (unverified): RTU; baud 2400/4800/9600/19200/38400; FC 01,03,05,06,08,15,16; Modbus RTU protocol is supported. FRENIC-Mini/Eco/Multi supports RTU mode only.

⚠ If alarm resetting is performed with the operation command (S06) uncleared, the inverter will start to operate just upon alarm resetting. Before alarm resetting, confirm that the operation command is cleared. Otherwise, an accident may result. — Starkest reads only; we never write a control register.

bench facts as documented (unverified)
terminalsRJ-45 connector or terminal block
A/B polarityDX+ is positive, DX- is negative
terminationA terminating resistor of 112 ohms is incorporated. Connection/release is switched by switch.
connector8-wire RJ-45 connector or terminal block
isolationThe RS-232C side of the converter must be isolated from the RS-485 side.
shield/groundSD terminal for relaying the shield of the shielded cable, insulated from other circuits.
max registers/read50
broadcastsupported
model registerM23
firmware registerM25
powerVcc 5V power source for the keypad is connected to the RJ-45 connector (via pins 1, 2, 7, and 8).
certificationsCompliant with EMC Directives (when using KB-STP-01K)
doc revision24A7-E-0082
field reports — community-sourced, unverified (checked 2026-06-11)
  • For FRENIC-Mini units with inverter ROM version 0399 or earlier, Modbus RTU functions are partially restricted. [source]
  • confirmed: Baud rates [2400, 4800, 9600, 19200, 38400] — confirmed by FRENIC Mini Series Drives User's Manual parameter y04
  • confirmed: Modbus RTU protocol is supported, FRENIC-Mini/Eco/Multi supports RTU mode only — confirmed by FRENIC-HVAC RS-485 User's Manual
  • confirmed: Identification registers M23 (Model code) and M25 (ROM version) — confirmed by RS-485 User's Manual
  • confirmed: Register map addresses (e.g., S01 @ 1793, S05 @ 1797, S06 @ 1798, M01 @ 2049, M05 @ 2053, M06 @ 2054, M13 @ 2061, M14 @ 2062) — confirmed by FRENIC-Mini (C2) Modbus Cross Reference and FRENIC 5000G11S/P11S Instruction Manual

The trust ladder

Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.

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.