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VAV box controller (compact, built-in damper drive) · BACnet points list
TROX BM0-D8 VAV control component (BACnet MS/TP) BACnet points list
Updated 6 November 2026
BM0-D8 is a compact VAV actuator-controller TROX fits to its VAV terminal units. It ships in Modbus RTU mode and can be switched to BACnet MS/TP with a service tool. The BACnet object list has 23 objects: relative setpoint (AO 1), override (MO 1), airflow and damper readings, min/max limits, a bus watchdog and status objects.
This page lists 23 BACnet objects for the TROX BM0-D8 VAV control component (BACnet MS/TP) — 10 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
- BM0-D8 VAV control component (BACnet MS/TP)
- Equipment
- VAV box controller (compact, built-in damper drive)
- Equipment type
- VAV boxes & fan coils
- BACnet objects
- 23 (10 writable)
- Transport
- BACnet MS/TP
- Firmware
- BTL:0002 B:0001 (Modbus module V1.0)
- 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
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 BM0-D8 VAV control component (BACnet MS/TP)
Switch the unit to BACnet MS/TP, keep MV 122 SpSource at Bus, and write the setpoint to AO 1 SpRel (0-100 % between qvmin and qvmax); MO 1 Override forces open/closed/qvmin/qvmid/qvmax. Read AI 10 or AI 19 for airflow, AI 1 for damper position and BI 101 for faults. Turn on AV 130 Bus Watchdog if the unit should fall back when 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 1 | SpRel | Airflow setpoint between Min. and Max. | Command |
| AI 19 | AbsFlow_UnitSel | Measured airflow | Read |
| AI 1 | RelPos | Damper position feedback | Read |
| BI 101 | SummaryStatus | Overall OK / not OK alarm | Read |
Enable & remote start
MV 122 SpSource selects the setpoint source: 2 = Bus (factory setting), 1 = Analogue, in which case AO 1 goes out of service.
Heartbeat & communication loss
AV 130 Bus Watchdog (0-3600 s, factory 0 = off). When set, writes to AO 1 SpRel or MO 1 Override reset the timer; if it expires the AO 1 Relinquish_Default applies (factory 0 = qvmin) and MI 110 StatusDevice shows bus failure. In hybrid mode only MO 1 writes are monitored.
Network setup
- Factory default is Modbus RTU; change to BACnet MS/TP with a service tool (display, adjustment device or PC software).
- Quick addressing via the [Address] push-button is described in the manual.
Watch out for
- With AV 130 = 0 (factory) there is no bus-failure fallback.
- Min. (AV 97) must stay below Max. (AV 98); qvmax range is 20-100 % of nominal.
TROX BM0-D8 VAV control component (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 | |||||
|---|---|---|---|---|---|---|
| AImin | 1 | RelPos | Damper blade position | % | Read | |
| AI | 2 | AbsPos | Absolute position | ° | Read | |
| AI | 6 | SpAnalogue | Analogue setpoint (when SpSource = Analogue) | % | Read | |
| AI | 10 | RelFlow | Relative airflow | % | Read | |
| AImin | 19 | AbsFlow_UnitSel | Absolute airflow in the unit set by MV 121 | Read | ||
| AI | 20 | Sens1Analogue | Sensor 1 analogue value | mV | Read | |
| AOmin | 1 | SpRel | Relative setpoint between qvmin and qvmax (bus control) | % | Command | |
| AV | 97 | Min. | Minimum setpoint qvmin | % | Write | |
| AV | 98 | Max. | Maximum setpoint qvmax | % | Write | |
| AV | 104 | Vnom_UnitSel | Nominal airflow in the unit set by MV 121 | Read | ||
| AV | 130 | Bus Watchdog | Time until bus failure monitoring trips, 0 = off | s | Write | |
| BI | 20 | Sens1Switch | Switch status at the sensor input | Read | 0=Switch not active | |
| BI | 99 | BusTermination | 120 ohm terminating resistor switched on via service tool | Read | 0=Switch not active | |
| BImin | 101 | SummaryStatus | Summary status (MI 106 and MI 110) | Read | 0=no error | |
| MI | 100 | InternalActivity | Activity status | Read | 1=none, 2=Test, 3=Adaptation | |
| MI | 106 | StatusActuator | Actuator status | Read | 1=OK, 2=Actuator cannot be moved, 3=Gear disengagement active, 4=Mechanical travel exceeded | |
| MI | 110 | StatusDevice | General device status | Read | 1=OK, 2=Bus failure monitoring activated | |
| MO | 1 | Override | Forced command over the setpoint | Command | 1=none, 2=OPEN, 3=CLOSED, 4=qvmin, 5=qvmid, 6=qvmax | |
| MV | 120 | Command | Trigger test functions | Write | 1=none, 2=Adaptation, 3=Test, 4=Reset | |
| MV | 121 | UnitSelFlow | Airflow unit for AI 19 and AV 104 | Write | 1=m³/s, 2=m³/h, 3=l/s, 4=l/min, 5=l/h, 6=gpm, 7=cfm | |
| MV | 122 | SpSource | Setpoint source | Write | 1=Analogue (0-10 V, 2-10 V), 2=Bus (Modbus, BACnet, MP-Bus) | |
| MV | 123 | ControlMode | Control mode | Write | 1=Position control (OpenLoop), 2=Volume flow control | |
| MV | 220 | Sens1Type | Sensor type at the analogue input | Write | 1=none, 2=active sensor (hybrid mode), 5=switch |
No points match these filters.
Object ID lookup: TROX BM0-D8 VAV control component point IDs by name
AI1RelPosAI2AbsPosAI6SpAnalogueAI10RelFlowAI19AbsFlow_UnitSelAI20Sens1AnalogueAO1SpRelAV97Min.AV98Max.AV104Vnom_UnitSelAV130Bus WatchdogBI20Sens1SwitchBI99BusTerminationBI101SummaryStatusMI100InternalActivityMI106StatusActuatorMI110StatusDeviceMO1OverrideMV120CommandMV121UnitSelFlowMV122SpSourceMV123ControlModeMV220Sens1Type
Integration notes
- The PICS names the product "VAV Compact ..MV-D3-M/B-X"; the object list matches the Belimo VAV-Compact (MOD) object numbering, so it shares firmware with that Belimo product.
- The unit leaves the factory in Modbus RTU mode; switch it to BACnet MS/TP with a service tool before integrating.
- AO 1 and MO 1 are commandable (priority array).
- Only the inactive state texts are printed for the BIs.
- The airflow unit for AI 19 and AV 104 follows MV 121 UnitSelFlow (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 BM0-D8 VAV control component (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 BM0-D8 VAV control component (BACnet MS/TP)
How many BACnet points does the TROX BM0-D8 VAV control component (BACnet MS/TP) have?
This list has 23 BACnet objects: 6 analog inputs, 1 analog output, 4 analog values, 3 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 BM0-D8 VAV control component (BACnet MS/TP) BACnet points are writable?
10 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 BM0-D8 VAV control component (BACnet MS/TP) BACnet documentation?
The source is Control component BM0-D8 - Installation, operation and maintenance manual (CD10129 V2), revision 2026-07, published free by TROX at https://www.trox.de/en/downloads/18aceabac41d9f56/BM0-D8_IOM_CD10129_V2_2026_07_GB_en.pdf.
What are the minimum BACnet points to integrate the TROX BM0-D8 VAV control component (BACnet MS/TP)?
Start with AO 1 SpRel (Airflow setpoint between Min. and Max); AI 19 AbsFlow_UnitSel (Measured airflow); AI 1 RelPos (Damper position feedback); BI 101 SummaryStatus (Overall OK / not OK alarm).
How do I enable BMS control of the TROX BM0-D8 VAV control component (BACnet MS/TP)?
MV 122 SpSource selects the setpoint source: 2 = Bus (factory setting), 1 = Analogue, in which case AO 1 goes out of service.
Does the TROX BM0-D8 VAV control component (BACnet MS/TP) need a BACnet heartbeat or have a communication timeout?
AV 130 Bus Watchdog (0-3600 s, factory 0 = off). When set, writes to AO 1 SpRel or MO 1 Override reset the timer; if it expires the AO 1 Relinquish_Default applies (factory 0 = qvmin) and MI 110 StatusDevice shows bus failure. In hybrid mode only MO 1 writes are monitored.
How do I check these points on the real BM0-D8 VAV control component (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 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 - VAV box controller (compact, built-in damper drive)
TROX XDMB0 compact VAV control component (TVE, BACnet MS/TP)
TROX TVE and TVE-Q VAV terminal units fitted with the XDMB0 compact control component.
Also known as: XDMB0, TVE XDMB0, TVE-Q, Compact XDMB0
Source: Control component BM0-D8 - Installation, operation and maintenance manual · CD10129 V2 · rev. 2026-07. Object names, instances and units are reproduced as published; descriptions are our own.