verified connector library

Hach SC4500 controller

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.

structure-verified

Decode path is structurally sound (addresses, widths, finite values). Does NOT prove word order or scaling.

pointaddress (0-based)typescaleunit
classified_error0U161
classified_status_11U161
classified_status_22U161
classified_status_33U161
classified_status_44U161
device_error_condition_15U161
device_error_condition_26U161
device_warning_condition_17U161
device_warning_condition_28U161
heartbeat9U161
measurement_110F32BE1
measurement_212F32BE1
measurement_314F32BE1
measurement_416F32BE1
measurement_518F32BE1
measurement_620F32BE1
measurement_722F32BE1
measurement_824F32BE1
measurement_926F32BE1
measurement_1028F32BE1
measurement_1130F32BE1
measurement_1232F32BE1
measurement_1334F32BE1
measurement_1436F32BE1
measurement_1538F32BE1
measurement_1640F32BE1

link settings as documented (unverified): RTU/ASCII/TCP; default 19200 8N1; Baud rate options: 9600, 19200 (default), 38.4K, 57.6K or 115.2K. Parity options: None (default), Even or Odd. Stop bits: 1 (default) or 2. Modbus TCP is also supported.

⚠ Explosion hazard. This manual is only for installation of the unit in a non-hazardous location. — Starkest reads only; we never write a control register.

bench facts as documented (unverified)
terminalsPower and relay terminals are designed for only single wire termination.
A/B polarityMains connection must keep supply polarity.
connectorM12 female D-coding connector for LAN
isolationThe relays are isolated from each other and the low-voltage input/output circuitry.
shield/groundIf metal conduit is used, make sure that the conduit hub is tightened so that the conduit hub connects the metal conduit to safety ground.
response timeout1000 ms
protocol notesRead timeout default is 1 second. Register write timeout default is 3 seconds. File write timeout default is 5 seconds. File preparation timeout default is 6 seconds. Recommended poll rate is between 500 ms and 5 s.
identification notesModule information menu shows the software version, bootloader version and serial number of the Modbus module.
powerAC controller: 100–240 VAC ±10%, 50/60 Hz, 1 A; DC controller: 18–28 VDC, 2.5 A
environmentOperating temperature: -20 to 60 °C (8W AC/9W DC sensor load) or -20 to 45 °C (28W AC/20W DC sensor load); Relative humidity: 0 to 95%, non-condensing; Altitude: 3000 m maximum; Indoor and outdoor use
certificationsCE, ETL certified to UL and CSA safety standards, FCC, ISED, KC, RCM, EAC, UKCA, SABS, CMIM, Morocco
doc revision07/2025, Edition 14

generated by gemini:gemini-3.5-flash · harvested from https://cdn.hach.com/7FYZVWYB/at/mz7tjqvt6mgnv57c4pc6pp6q/DOC3435290690_14ed.pdf (Hach); manual-faithful — the document's claims, panel risk: LOW — panel concurs, no field disagreements; proved structure-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.