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VAV box controller (compact, built-in damper drive) · BACnet points list
TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP) BACnet points list
Updated 6 November 2026
XDMB0 is the compact actuator-controller TROX fits to its TVE and TVE-Q VAV units. It speaks Modbus RTU or BACnet MS/TP and exposes 23 objects: airflow setpoint (AO 0) and override (MO 1), actual airflow and damper position, operating limits, a bus-failure watchdog and status objects. Some objects are listed but marked as not supported.
This page lists 23 BACnet objects for the TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP) — 8 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from TROX’s own free documentation, linked below.
- Manufacturer
- TROX
- Model
- XDMB0 compact VAV control component (TVE, BACnet MS/TP)
- Equipment
- VAV box controller (compact, built-in damper drive)
- Equipment type
- VAV boxes & fan coils
- BACnet objects
- 23 (8 writable)
- Transport
- BACnet MS/TP
- Firmware
- SW 116.955.11.2022, FW 101.1.10.2020/GR
- Default device instance
- 1
- Also known as
- XDMB0, TVE XDMB0, TVE-Q, Compact XDMB0
Reference only, provided as-is: verify against TROX’s current documentation and the live device before use. Not official TROX information. Terms of use.
BMS integration notes: TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP)
Set MV 122 SpSource to Bus (the default), then write the airflow setpoint to AO 0 RelSpBus as a percentage of the Min..Max range; use MO 1 Override for open/close/min/max. Read AI 6 or AI 7 for actual airflow, AI 4 for damper position and BI 0 for faults. Set AV 109 so the unit falls back to a safe state if the BMS stops writing.
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.
| Object | Name | Why | Access |
|---|---|---|---|
| AO 0 | RelSpBus | Airflow setpoint between Min and Max | Command |
| AI 7 | AbsActual_Value | Measured airflow | Read |
| AI 4 | RelPos | Damper position feedback | Read |
| BI 0 | SummaryStatus | Overall OK / not OK alarm | Read |
Enable & remote start
MV 122 SpSource selects the setpoint source: 2 = Bus (default, AO 0 is used and input Y ignored), 1 = Analogue (input Y only, AO 0 goes out of service).
Heartbeat & communication loss
AV 109 BusFailWatchdog sets the bus-failure timeout in seconds (default 120, 0 = off). It is reset by every successful write to AO 0 or MO 1, so the BMS must keep writing one of them; when it expires the AO 0 Relinquish_Default applies and MI 109 shows the trip.
Network setup
- BACnet MS/TP, address 0..127 (default 1); baud 9600-115200, factory setting bc3 = 38400.
- Address and comms parameters are set on the display, with the GUIV3-M adjustment device or the WINVAV2 PC software.
- Default device instance 1; change it to a unique number.
Watch out for
- Do not write the EEPROM objects (AV 105, AV 106, AV 109, MV 122, MV 201) cyclically; AO 0 and MO 1 are the objects meant for frequent writes.
- AV 109 counts from power-up until the first write, so a unit can trip its watchdog before the BMS starts writing.
- With TVE units 100 % opening is not a 90° blade angle; use RelPos, not AbsPos, for open/closed.
TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP) 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.
| Description | States | |||||
|---|---|---|---|---|---|---|
| AI | 0 | RelSpAnalogue | Setpoint read at analogue input Y (analogue mode only) | % | Read | |
| AImin | 4 | RelPos | Damper opening, 0 = closed | % | Read | |
| AI | 5 | AbsPos | Damper travel from closed, service use only | ° | Read | |
| AI | 6 | RelActual_Value | Actual airflow, % of nominal | % | Read | |
| AImin | 7 | AbsActual_Value | Actual airflow in the unit set by MV 201 | Read | ||
| AI | 8 | Sens1Analogue | Signal voltage at input Y | mV | Read | |
| AOmin | 0 | RelSpBus | Airflow setpoint via bus, % of Min..Max range | % | Command | |
| AV | 105 | Min | Lower operating limit qvmin, % of nominal | % | Write | |
| AV | 106 | Max | Upper operating limit qvmax, % of nominal | % | Write | |
| AV | 109 | BusFailWatchdog | Bus failure timeout, 0 = off (default 120) | s | Write | |
| AV | 118 | Mid | Visible but not fully supported | Read | ||
| AV | 233 | AbsNomValue | Nominal airflow of the unit (unit per MV 201) | Read | ||
| BImin | 0 | SummaryStatus | Collective fault (StatusActuator + StatusDevice) | Read | 0=OK, 1=Not_OK | |
| BI | 8 | Sens1Switch | Visible but not supported | Read | ||
| MI | 2 | InternalActivity | Internal activity such as test or adaptation run | Read | 1=None, 2=Test, 3=Adaptation | |
| MI | 104 | StatusActuator | Actuator status | Read | 1=OK, 2=EEPROM Error, 3=Under voltage, 4=Actuator cannot move (actuator blocked) | |
| MI | 109 | StatusDevice | Bus failure watchdog status | Read | 1=OK, 2=Bus watchdog triggered | |
| MO | 1 | Override | Override of the setpoint | Command | 1=None, 2=Open, 3=Close, 4=Min, 5=Max, 6-8=not in use, 9=Stop | |
| MV | 2 | Command | Service command; returns to None | Write | 1=None, 2=Adaptation, 3=Test, 4=Reset | |
| MV | 107 | Sens1Type | Visible but not supported with TVE(-Q) | Read | ||
| MV | 122 | SpSource | Setpoint source | Write | 1=Analogue, 2=Bus | |
| MV | 123 | ControlMode | Only standard closed-loop operation (2) permitted | Read | ||
| MV | 201 | UnitSel | Airflow unit | Write | 1=l/s, 2=m³/h, 5=cfm |
No points match these filters.
Object ID lookup: TROX XDMB0 compact VAV control component point IDs by name
AI0RelSpAnalogueAI4RelPosAI5AbsPosAI6RelActual_ValueAI7AbsActual_ValueAI8Sens1AnalogueAO0RelSpBusAV105MinAV106MaxAV109BusFailWatchdogAV118MidAV233AbsNomValueBI0SummaryStatusBI8Sens1SwitchMI2InternalActivityMI104StatusActuatorMI109StatusDeviceMO1OverrideMV2CommandMV107Sens1TypeMV122SpSourceMV123ControlModeMV201UnitSel
Integration notes
- Min, Max, BusFailWatchdog, SpSource and UnitSel (marked W¹ in the manual) are stored in EEPROM; the manual says they must not be written cyclically.
- AO 0 and MO 1 are commandable (priority array).
- Mid (AV 118), Sens1Switch (BI 8), Sens1Type (MV 107) and ControlMode (MV 123) are visible but not (fully) supported.
- The airflow unit for AI 7 and AV 233 follows MV 201 UnitSel (default m³/h).
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 XDMB0 compact VAV control component (TVE, BACnet MS/TP) 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 TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP)
How many BACnet points does the TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP) have?
This list has 23 BACnet objects: 6 analog inputs, 1 analog output, 5 analog values, 2 binary inputs, 3 multi-state inputs, 1 multi-state output, 5 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP) BACnet points are writable?
8 of the 23 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.
Where is the official TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP) BACnet documentation?
The source is Control component Compact XDMB0 - Installation, operation and maintenance manual (CD10105 V1), revision 2025-05, published free by TROX at https://www.trox.de/en/downloads/6c1db795aa3c72ce/XDMB0_IOM_CD10105_V1_2025_05_GB_en--1-.pdf.
What are the minimum BACnet points to integrate the TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP)?
Start with AO 0 RelSpBus (Airflow setpoint between Min and Max); AI 7 AbsActual_Value (Measured airflow); AI 4 RelPos (Damper position feedback); BI 0 SummaryStatus (Overall OK / not OK alarm).
How do I enable BMS control of the TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP)?
MV 122 SpSource selects the setpoint source: 2 = Bus (default, AO 0 is used and input Y ignored), 1 = Analogue (input Y only, AO 0 goes out of service).
Does the TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP) need a BACnet heartbeat or have a communication timeout?
AV 109 BusFailWatchdog sets the bus-failure timeout in seconds (default 120, 0 = off). It is reset by every successful write to AO 0 or MO 1, so the BMS must keep writing one of them; when it expires the AO 0 Relinquish_Default applies and MI 109 shows the trip.
How do I check these points on the real XDMB0 compact VAV control component (TVE, BACnet MS/TP)?
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 TROX BACnet points lists
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TROX VAV terminal units fitted with the BM0-D8 compact control component (LMV/NMV-D3-M/B-X TR actuators).
Also known as: BM0-D8, BM0, LMV-D3-M/B-X TR, NMV-D3-M/B-X TR, ..MV-D3-M/B-X, ..MV-D3-M/B-FX, TROX VAV Compact - Laboratory VAV airflow controller
TROX EASYLAB TCU3 adapter module TAM with room management function (RMF) (EM-BAC-MOD-01, BACnet MS/TP)
TROX EASYLAB TCU3 controllers set up as adapter module TAM with room management function (RMF), fitted with the EM-BAC-MOD-01 expansion module.
Also known as: EASYLAB TCU3 EM-BAC-MOD-01, EM-BAC-MOD-01, TCU3, TROX EASYLAB, order code TAM-RMF - Laboratory VAV airflow controller
TROX EASYLAB TCU3 adapter module TAM with room management function (RMF) (EM-IP, BACnet IP)
TROX EASYLAB TCU3 controllers set up as adapter module TAM with room management function (RMF), fitted with the EM-IP expansion module.
Also known as: EASYLAB TCU3 EM-IP, EM-IP, TCU3, TROX EASYLAB, order code TAM-RMF - Laboratory VAV airflow controller
TROX EASYLAB TCU3 adapter module TAM without room management function (EM-BAC-MOD-01, BACnet MS/TP)
TROX EASYLAB TCU3 controllers set up as adapter module TAM without room management function, fitted with the EM-BAC-MOD-01 expansion module.
Also known as: EASYLAB TCU3 EM-BAC-MOD-01, EM-BAC-MOD-01, TCU3, TROX EASYLAB, order code TAM - Laboratory VAV airflow controller
TROX EASYLAB TCU3 adapter module TAM without room management function (EM-IP, BACnet IP)
TROX EASYLAB TCU3 controllers set up as adapter module TAM without room management function, fitted with the EM-IP expansion module.
Also known as: EASYLAB TCU3 EM-IP, EM-IP, TCU3, TROX EASYLAB, order code TAM - Laboratory VAV airflow controller
TROX EASYLAB TCU3 all EASYLAB applications (combined list) (EM-BAC-MOD-01, BACnet MS/TP)
TROX EASYLAB TCU3 controllers set up as all EASYLAB applications (combined list), fitted with the EM-BAC-MOD-01 expansion module.
Also known as: EASYLAB TCU3 EM-BAC-MOD-01, EM-BAC-MOD-01, TCU3, TROX EASYLAB, order code ELAB - Laboratory VAV airflow controller
TROX EASYLAB TCU3 all EASYLAB applications (combined list) (EM-IP, BACnet IP)
TROX EASYLAB TCU3 controllers set up as all EASYLAB applications (combined list), fitted with the EM-IP expansion module.
Also known as: EASYLAB TCU3 EM-IP, EM-IP, TCU3, TROX EASYLAB, order code ELAB - Laboratory VAV controller (fume cupboard)
TROX EASYLAB TCU3 fume cupboard controller (EM-BAC-MOD-01, BACnet MS/TP)
TROX EASYLAB TCU3 controllers set up as fume cupboard controller, fitted with the EM-BAC-MOD-01 expansion module.
Also known as: EASYLAB TCU3 EM-BAC-MOD-01, EM-BAC-MOD-01, TCU3, TROX EASYLAB, order code FH - Laboratory VAV controller (fume cupboard)
TROX EASYLAB TCU3 fume cupboard controller (EM-IP, BACnet IP)
TROX EASYLAB TCU3 controllers set up as fume cupboard controller, fitted with the EM-IP expansion module.
Also known as: EASYLAB TCU3 EM-IP, EM-IP, TCU3, TROX EASYLAB, order code FH - Laboratory VAV airflow controller
TROX EASYLAB TCU3 room supply/extract controller with room management function (RMF) (EM-BAC-MOD-01, BACnet MS/TP)
TROX EASYLAB TCU3 controllers set up as room supply/extract controller with room management function (RMF), fitted with the EM-BAC-MOD-01 expansion module.
Also known as: EASYLAB TCU3 EM-BAC-MOD-01, EM-BAC-MOD-01, TCU3, TROX EASYLAB, order code LAB-RMF / CLR-RMF - Laboratory VAV airflow controller
TROX EASYLAB TCU3 room supply/extract controller with room management function (RMF) (EM-IP, BACnet IP)
TROX EASYLAB TCU3 controllers set up as room supply/extract controller with room management function (RMF), fitted with the EM-IP expansion module.
Also known as: EASYLAB TCU3 EM-IP, EM-IP, TCU3, TROX EASYLAB, order code LAB-RMF / CLR-RMF - Laboratory VAV airflow controller
TROX EASYLAB TCU3 room supply/extract controller without room management function (EM-BAC-MOD-01, BACnet MS/TP)
TROX EASYLAB TCU3 controllers set up as room supply/extract controller without room management function, fitted with the EM-BAC-MOD-01 expansion module.
Also known as: EASYLAB TCU3 EM-BAC-MOD-01, EM-BAC-MOD-01, TCU3, TROX EASYLAB, order code LAB / CLR - Laboratory VAV airflow controller
TROX EASYLAB TCU3 room supply/extract controller without room management function (EM-IP, BACnet IP)
TROX EASYLAB TCU3 controllers set up as room supply/extract controller without room management function, fitted with the EM-IP expansion module.
Also known as: EASYLAB TCU3 EM-IP, EM-IP, TCU3, TROX EASYLAB, order code LAB / CLR - Laboratory VAV airflow controller
TROX EASYLAB TCU3 single extract or supply air controller (EM-BAC-MOD-01, BACnet MS/TP)
TROX EASYLAB TCU3 controllers set up as single extract or supply air controller, fitted with the EM-BAC-MOD-01 expansion module.
Also known as: EASYLAB TCU3 EM-BAC-MOD-01, EM-BAC-MOD-01, TCU3, TROX EASYLAB, order code EC / SC - Laboratory VAV airflow controller
TROX EASYLAB TCU3 single extract or supply air controller (EM-IP, BACnet IP)
TROX EASYLAB TCU3 controllers set up as single extract or supply air controller, fitted with the EM-IP expansion module.
Also known as: EASYLAB TCU3 EM-IP, EM-IP, TCU3, TROX EASYLAB, order code EC / SC - Decentralised ventilation unit / zone controller
TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP)
TROX FSL decentralised (single-room) ventilation units with the FSL-CONTROL II / X-AIRCONTROL controller and the EM-BAC-MOD-01 XAC BACnet MS/TP card.
Also known as: FSL-CONTROL II, X-AIRCONTROL, EM-BAC-MOD-01 XAC, A00000020207, Schoolair, FSL decentralised ventilation - Decentralised ventilation unit controller
TROX FSL-CONTROL III decentralised ventilation controller (software 8.0)
TROX FSL decentralised (single-room) ventilation units with the FSL-CONTROL III controller, software version 8.0.
Also known as: FSL-CONTROL III, FSL-C-III, Schoolair, FSL decentralised ventilation, M172 - Fan coil unit controller
TROX TITAN FCU403 fan coil controller (config FCU403 TRX)
Fan coil units supplied by TROX with the Titan Products FCU4 controller running configuration FCU403 TRX and the graphical RDU.
Also known as: FCU403, FCU4, FCU403 TRX, Titan FCU4, FCU403 TP1193E, Graphical RDU V2 - VAV room airflow controller
TROX UNIVERSAL all TROX UNIVERSAL applications (combined list) (EM-BAC-MOD-01, BACnet MS/TP)
TROX TROX UNIVERSAL controllers set up as all TROX UNIVERSAL applications (combined list), fitted with the EM-BAC-MOD-01 expansion module.
Also known as: TROX UNIVERSAL EM-BAC-MOD-01, EM-BAC-MOD-01, TROX UNIVERSAL, order code TU* - VAV room airflow controller
TROX UNIVERSAL all TROX UNIVERSAL applications (combined list) (EM-IP, BACnet IP)
TROX TROX UNIVERSAL controllers set up as all TROX UNIVERSAL applications (combined list), fitted with the EM-IP expansion module.
Also known as: TROX UNIVERSAL EM-IP, EM-IP, TROX UNIVERSAL, order code TU* - VAV room / duct pressure controller
TROX UNIVERSAL duct pressure controller (EM-IP, BACnet IP)
TROX TROX UNIVERSAL controllers set up as duct pressure controller, fitted with the EM-IP expansion module.
Also known as: TROX UNIVERSAL EM-IP, EM-IP, TROX UNIVERSAL, order code PDS / PDE - VAV room airflow controller
TROX UNIVERSAL room airflow controller (EM-BAC-MOD-01, BACnet MS/TP)
TROX TROX UNIVERSAL controllers set up as room airflow controller, fitted with the EM-BAC-MOD-01 expansion module.
Also known as: TROX UNIVERSAL EM-BAC-MOD-01, EM-BAC-MOD-01, TROX UNIVERSAL, order code RS / RE - VAV room airflow controller
TROX UNIVERSAL room airflow controller (EM-IP, BACnet IP)
TROX TROX UNIVERSAL controllers set up as room airflow controller, fitted with the EM-IP expansion module.
Also known as: TROX UNIVERSAL EM-IP, EM-IP, TROX UNIVERSAL, order code RS / RE - VAV room airflow controller
TROX UNIVERSAL room airflow controller, master (EM-BAC-MOD-01, BACnet MS/TP)
TROX TROX UNIVERSAL controllers set up as room airflow controller, master, fitted with the EM-BAC-MOD-01 expansion module.
Also known as: TROX UNIVERSAL EM-BAC-MOD-01, EM-BAC-MOD-01, TROX UNIVERSAL, order code RS/M / RE/M - VAV room airflow controller
TROX UNIVERSAL room airflow controller, master (EM-IP, BACnet IP)
TROX TROX UNIVERSAL controllers set up as room airflow controller, master, fitted with the EM-IP expansion module.
Also known as: TROX UNIVERSAL EM-IP, EM-IP, TROX UNIVERSAL, order code RS/M / RE/M - VAV room / duct pressure controller
TROX UNIVERSAL room or duct pressure controller (EM-BAC-MOD-01, BACnet MS/TP)
TROX TROX UNIVERSAL controllers set up as room or duct pressure controller, fitted with the EM-BAC-MOD-01 expansion module.
Also known as: TROX UNIVERSAL EM-BAC-MOD-01, EM-BAC-MOD-01, TROX UNIVERSAL, order code PRS / PRE / PDS / PDE - VAV room / duct pressure controller
TROX UNIVERSAL room or duct pressure controller, master (EM-BAC-MOD-01, BACnet MS/TP)
TROX TROX UNIVERSAL controllers set up as room or duct pressure controller, master, fitted with the EM-BAC-MOD-01 expansion module.
Also known as: TROX UNIVERSAL EM-BAC-MOD-01, EM-BAC-MOD-01, TROX UNIVERSAL, order code PRS/M / PRE/M / PDS/M / PDE/M, TROX UNIVERSAL PD master - VAV room / duct pressure controller
TROX UNIVERSAL room or duct pressure controller, master (EM-IP, BACnet IP)
TROX TROX UNIVERSAL controllers set up as room or duct pressure controller, master, fitted with the EM-IP expansion module.
Also known as: TROX UNIVERSAL EM-IP, EM-IP, TROX UNIVERSAL, order code PRS/M / PRE/M / PDS/M / PDE/M, TROX UNIVERSAL PD master - VAV room / duct pressure controller
TROX UNIVERSAL room pressure controller (EM-IP, BACnet IP)
TROX TROX UNIVERSAL controllers set up as room pressure controller, fitted with the EM-IP expansion module.
Also known as: TROX UNIVERSAL EM-IP, EM-IP, TROX UNIVERSAL, order code PRS / PRE - VAV / static pressure controller
TROX UNIVERSAL static BUPNF duct pressure controller (VRU-...-BAC, BACnet MS/TP)
TROX UNIVERSAL static BUPNF controllers (VRU-D3/M1/M1R-BAC control electronics) for airflow, duct pressure and room pressure control.
Also known as: BUPNF, TROX UNIVERSAL static, VRU-D3-BAC, VRU-M1-BAC, VRU-M1R-BAC, VRU-D3-M/B TR, VRU-M1-M/B TR, VRU-M1R-M/B TR - Fire and smoke damper control module
TROX TROXNETCOM MB-BAC-WA1/2 fire damper module (BACnet MS/TP)
TROX TROXNETCOM MB-BAC-WA1/2 modules that drive and monitor up to 2 fire or smoke extract dampers (motorised or limit-switch only).
Also known as: MB-BAC-WA1/2, MB-BAC-WA1B3, TROXNETCOM, MB-BAC-WA1-2 - Fire and smoke damper control module
TROX TROXNETCOM MB-BAC-WA1/4 fire damper module (BACnet MS/TP)
TROX TROXNETCOM MB-BAC-WA1/4 modules that drive and monitor up to 4 fire or smoke extract dampers (motorised or limit-switch only).
Also known as: MB-BAC-WA1/4, TROXNETCOM, MB-BAC-WA1-4 - VAV zone controller (master for up to 25 zone modules)
TROX X-AIRCONTROL Master zone controller (TROX Auranor, BACnet IP)
TROX Auranor X-AIRCONTROL VAV zone control systems: one Master with up to 25 Zone Modules, linked to an AHU.
Also known as: X-AIRCONTROL, X-AIRCONTROL Master, TROX Auranor X-AIRCONTROL, 67501-06/15, X-AIRCONTROL ZoneModule - Air handling unit controller
TROX X-CUBE Control BACnet data point list
TROX X-CUBE central air handling units with the factory X-CUBE Control system.
Also known as: X-CUBE, TROX X-CUBE, X-CUBE Control, BACnet DPL, BACnet EDE XCUBE
Source: Control component Compact XDMB0 - Installation, operation and maintenance manual · CD10105 V1 · rev. 2025-05. Object names, instances and units are reproduced as published; descriptions are our own.