verified connector library

CS Instruments VA 500/520 thermal flow 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
flow_m3_h1100F32BE1m³/h
flow_nm3_h1108F32BE1Nm³/h
flow_m3_min1116F32BE1m³/min
flow_nm3_min1124F32BE1Nm³/min
flow_ltr_h1132F32BE1ltr/h
flow_nltr_h1140F32BE1Nltr/h
flow_ltr_min1148F32BE1ltr/min
flow_nltr_min1156F32BE1Nltr/min
flow_ltr_s1164F32BE1ltr/s
flow_nltr_s1172F32BE1Nltr/s
flow_cfm1180F32BE1cfm
flow_ncfm1188F32BE1Ncfm
flow_kg_h1196F32BE1kg/h
flow_kg_min1204F32BE1kg/min
flow_kg_s1212F32BE1kg/s
flow_kw1220F32BE1kW
consumption_m31268U32BE1
consumption_nm31274U32BE1Nm³
consumption_ltr1280U32BE1ltr
consumption_nltr1286U32BE1Nltr
consumption_cf1292U32BE1cf
consumption_ncf1298U32BE1Ncf
consumption_kg1304U32BE1kg
consumption_kwh1310U32BE1kWh
velocity_m_s1346F32BE1m/s
velocity_nm_s1354F32BE1Nm/s
velocity_ft_min1362F32BE1Ft/min
velocity_nft_min1370F32BE1NFt/min
gas_temp_c1418F32BE1°C
gas_temp_f1426F32BE1°F
system_pressure_mbar1474F32BE1mbar
system_pressure_bar1480F32BE1bar
system_pressure_psi1486F32BE1psi
delta_p1056F32BE1

link settings as documented (unverified): RTU/TCP; default 19200 8E1; unit ID 1; FC 03,16; Default data format is ABCD (Big Endian).

bench facts as documented (unverified)
terminalsVia connection plug (M12 connector plug A and B)
A/B polarityPin 2 (Modbus A), Pin 4 (Modbus B)
termination120-Ω resistor for bus termination, M12 connector for electrical termination, or internal DIP switch
connectorM12
shield/groundUse shielded connection cables.
response timeout10000 ms
FC 43 device IDnot supported
power18... 36 V DC via SELV, 5 W. Optional PoE according to IEEE 802.3af, Class 2 (3.84...6.49 W)
environmentAmbient temperature: -20...+70 °C, Storage temperature: -40...+80 °C, Humidity: Max. 90% relative humidity, non-condensing, Altitude: Up to 4000 m above sea level, Protection class: IP65
accuracy±1.5% of measured value, ±0.3% of final value
certificationsCE, UKCA
doc revision04/2026 | V2.02 | 020001046

generated by gemini:gemini-3.5-flash · harvested from https://www.cs-instruments.com/cs-data/Bedienungsanleitungen/Instruction%20manuals_EN_new/Instruction_manual_VA500_EN.pdf (CS Instruments); 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.