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Humidity and temperature transmitter (sensor) · BACnet points list

Contemporary Controls Vaisala HUMICAP HMW90 via BASgatewayLX BACnet points list

Updated 12 November 2026

Short answer

Gateway profile for the Vaisala HMW90: 12 objects (10 AI, 2 AO), 10 polled by default. It reads RH, temperature, dew point, frost point, dew point depression, wet bulb, absolute humidity, mixing ratio, enthalpy and the error code; pressure and elevation compensation are unpolled outputs.

This page lists 12 BACnet objects for the Contemporary Controls Vaisala HUMICAP HMW90 via BASgatewayLX — 2 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Contemporary Controls’s own free documentation, linked below.

Manufacturer
Contemporary Controls
Model
Vaisala HUMICAP HMW90 via BASgatewayLX
Equipment
Humidity and temperature transmitter (sensor)
Equipment type
Thermostats, sensors & meters
BACnet objects
12 (2 writable)
Transport
BACnet IP
Firmware
Not stated
Also known as
HMW90, HMW92, HMW93, Vaisala HMW90 Modbus
Source document
BASgatewayLX Modbus device profile Vaisala_HUMICAP_HMW90_a · Vaisala_HUMICAP_HMW90_a_LX.csv
Download CSV 12 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Compare with your scan Download Easy BACnet Mobile App Google Play

Reference only, provided as-is: verify against Contemporary Controls’s current documentation and the live device before use. Not official Contemporary Controls information. Terms of use.

BMS integration notes: Contemporary Controls Vaisala HUMICAP HMW90 via BASgatewayLX

Integration in brief

Map relative humidity, temperature and dew point (°F) first. The listed objects are read-only.

Minimum points to map

The short list most integrators start with — enough to run the unit from a BMS. Map more as the job needs.

ObjectNameWhyAccess
AI 1RH%Relative humidityRead
AI 2T Deg FTemperature, °FRead
AI 3Td Deg FDew point, °FRead
AI 10Error CodeError codeRead

Network setup

Watch out for

Contemporary Controls Vaisala HUMICAP HMW90 via BASgatewayLX BACnet objects

Type: AI, AO, AV, BI, BO, BV, MI/MO/MV (multi-state) · Access: Read read-only, Write writable, Command writable with a priority array.

Note: the source document has no read/write column, so access here is inferred from the object type (inputs read-only, values writable). Confirm on the live controller before writing.

12 of 12 shown
Type
Access
Show
Contemporary Controls Vaisala HUMICAP HMW90 via BASgatewayLX BACnet Points List
DescriptionStates
AImin1RH%Modbus 406403%RHRead
AImin2T Deg FModbus 406405°FRead
AImin3Td Deg FModbus 406407°FRead
AI4Tdf Deg FModbus 406409°FRead
AI5dTd Deg FModbus 406411°FRead
AI6Tw Deg FModbus 406413°FRead
AI7a gr/ft3Modbus 406415Read
AI8x gr/lbModbus 406417Read
AI9h btu/lbModbus 406419Read
AImin10Error CodeModbus 406913Read
AO11PressureModbus 407177; not polled by defaulthPaCommand
AO12ElevationModbus 407179; not polled by defaultftCommand
Object ID lookup: Contemporary Controls BASgatewayLX Vaisala HMW90 point IDs by name

Integration notes

Check it against the live device. A points list tells you what the controller can expose; the unit in front of you may differ by firmware or installed options. This list is provided as-is for reference only and may contain mistakes — confirming it before you write, map or commission anything is up to you (terms). Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the Vaisala HUMICAP HMW90 via BASgatewayLX and exports what it actually has to Excel — free. New to BACnet? Start with what a BACnet points list is and what the object types mean.

Questions about the Contemporary Controls Vaisala HUMICAP HMW90 via BASgatewayLX

How many BACnet points does the Contemporary Controls Vaisala HUMICAP HMW90 via BASgatewayLX have?

This list has 12 BACnet objects: 10 analog inputs, 2 analog outputs. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Contemporary Controls Vaisala HUMICAP HMW90 via BASgatewayLX BACnet points are writable?

2 of the 12 objects accept a write. Points marked Command have a priority array: a write holds until it is released, so release it back to automatic when you are done. The source has no read/write column, so this is inferred from object type.

Where is the official Contemporary Controls Vaisala HUMICAP HMW90 via BASgatewayLX BACnet documentation?

The source is BASgatewayLX Modbus device profile Vaisala_HUMICAP_HMW90_a (Vaisala_HUMICAP_HMW90_a_LX.csv), published free by Contemporary Controls at https://www.ccontrols.com/support/dp/HUMICAP_HMW90.zip.

What are the minimum BACnet points to integrate the Contemporary Controls Vaisala HUMICAP HMW90 via BASgatewayLX?

Start with AI 1 RH% (Relative humidity); AI 2 T Deg F (Temperature, °F); AI 3 Td Deg F (Dew point, °F); AI 10 Error Code (Error code).

How do I check these points on the real Vaisala HUMICAP HMW90 via BASgatewayLX?

Scan the network with a BACnet IP browser such as Easy BACnet, open the device and compare its object list with this table. Anything missing is usually an option that isn't installed or a point that is disabled in the controller's configuration.

More Contemporary Controls BACnet points lists

Source: BASgatewayLX Modbus device profile Vaisala_HUMICAP_HMW90_a · Vaisala_HUMICAP_HMW90_a_LX.csv. Object names, instances and units are reproduced as published; descriptions are our own.