verified connector library

Thermokon FTA54+ RH/temp sensor

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.

pointaddress (0-based)typescaleunit
uni_firmware0I161
uni_device_location1I161
uni_offset_temperature5I160.01K
uni_offset_relative_humidity6I160.01%
uni_relative_humidity585I160.1%
uni_temperature_c587I160.01°C
uni_temperature_f588I160.01°F
use_temperature0I160.1
use_relative_humidity1I160.1
use_offset_temperature100I160.1K
use_offset_relative_humidity101I160.1%rH
use_unit_system400I161
use_firmware_version503I161

link settings as documented (unverified): RTU/ASCII; default 9600 8E1; unit ID 1; When using ASCII mode, parity must be set to EVEN or ODD. 'No Parity' (no) is not available in ASCII mode. Register addressing mode (UNI or USE) is selectable via DIP switch 2.6.

⚠ The product should only be used for the intended application. Unauthorised modifications are prohibited! The product must not be used in relation with any equipment that in case of a failure may threaten, directly or indirectly, human health or life or result in danger to human beings, animals or assets. Ensure all power is disconnected before installing. Do not connect to live/operating equipment. — Starkest reads only; we never write a control register.

bench facts as documented (unverified)
terminalsremovable plug-in terminal, max. 14AWG
A/B polarityIn case of reversed polarity at one field device, a supply voltage short-circuit would be caused by that device.
connectorremovable plug-in terminal
wiring notesCable entry Flextherm M20, for wire max. Ø=0.18..0.35 in., removable
protocol notesRegister compatibility to USE (Valid from firmware version 1.4, Jan. 2020). Via dipswitch 2.6 it is possible to change between the previous register addressing of the UNI-Modbus board to a USE compatible register assignment.
firmware register0 (Variant 1) or 503 (Variant 2)
identification notesFirmware version is available at register 0 in UNI-Modbus mode or register 503 in USE-Modbus mode.
power15..24 V = (±10%) (or 24 V ~ (±10%))* SELV, max. 0,7 W (24 V =) | 1,8 VA (24 V ~)
environmentAmbient condition -4..+158 °F, short term condensation. IP65 according to EN 60529
accuracyAccuracy temperature ±0,3 K (typ. at 70 °F), Accuracy humidity ±2% between 10..90% rH (typ. at 70 °F)
certificationsCE
doc revision05/21/2026 • A160
firmware applicabilityValid from firmware version 1.4, Jan. 2020

generated by gemini:gemini-3.5-flash · harvested from https://www.thermokon.de/downloads/Datenbl%C3%A4tter/FTA54+_Basic_RS485_Modbus_Datasheet_en-us.pdf (Thermokon); manual-faithful — the document's claims, panel risk: ELEVATED — panel is not confident; 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.

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.