Easy BACnet
  1. Home
  2. BACnet points lists
  3. TROX
  4. FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP)

Decentralised ventilation unit / zone controller · BACnet points list

TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP) BACnet points list

Updated 6 November 2026

Short answer

FSL-CONTROL II single-room ventilation units connect to BACnet MS/TP through the EM-BAC-MOD-01 XAC expansion card. The PICS in the FSL-CONTROL II manual lists 47 objects (AV 1-18, BV 1-20, MV 1-9): BMS presets for operating mode, occupancy, fan stage, changeover, fire and window inputs, BMS-fed temperatures, humidity and VOC values, plus feedback, alarms and hardware status messages.

This page lists 47 BACnet objects for the TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP) — 18 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
FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP)
Equipment
Decentralised ventilation unit / zone controller
Equipment type
Other equipment
BACnet objects
47 (18 writable)
Transport
BACnet MS/TP
Firmware
EM-BAC-MOD-01 XAC 1.0; data point list valid from X-AIRCONTROL V1.14
Default device instance
32900 + address switch
Also known as
FSL-CONTROL II, X-AIRCONTROL, EM-BAC-MOD-01 XAC, A00000020207, Schoolair, FSL decentralised ventilation
Source document
FSL-CONTROL II single room control system - installation and commissioning manual (BACnet MS/TP PICS and X-AIRCONTROL data point list) · A00000046303 V6 · rev. 2018-04
Download CSV 47 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 TROX’s current documentation and the live device before use. Not official TROX information. Terms of use.

BMS integration notes: TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP)

Integration in brief

Preset the operating mode with MV 4 Mode (occupied/unoccupied/boost/standby) or MV 2 ApplicMode, set the fan stage with MV 8 and the heat/cool changeover with MV 7, and feed BV 2 Fire and BV 3 Window if the BMS handles them. Read MV 5 ActMode, AV 7 ActRoomTemp, AV 14 EffectSetpt and the alarm BVs (BV 7, BV 8, BV 11-17).

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
MV 4ModeOccupancy preset: occupied, unoccupied, boost, standbyWrite
MV 8FanSpeedFan stage preset: off, level 1-5 or autoWrite
AV 5TempOffsetRelative room setpoint offset, °CWrite
BV 2FireFire protection switch-off from the BMSWrite
MV 5ActModeActual operating modeRead
AV 7ActRoomTempRoom air temperatureRead
AV 14EffectSetptEffective room temperature setpointRead
BV 7FAlarmFrost protection alarmRead
BV 8Alarm1Alarm/error messageRead

Enable & remote start

MV 4 Mode is the operating mode default from the central BMS; 5 = NUL means no preset. MV 2 ApplicMode presets the HVAC mode (1 = HVAC_NUL, inactive).

Sensors & values from the BMS

AV 1 OutsideTemp, AV 6 RoomTemp, AV 8 RelHumid, AV 10 VOC_Room and AV 12 VOC_Outside take values written by the BMS; the Act* objects show what the controller uses.

Network setup

Watch out for

TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (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.

47 of 47 shown
Type
AnalogBinaryMulti-state
Access
Show
TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP) BACnet Points List
DescriptionStates
AV1OutsideTempOutdoor air temperature from the BMS°CWrite
AV2ActOutsideTempActual outdoor air temperature (feedback)°CRead
AV3RoomTemp_Set°CWrite
AV4SetptOffsetTemperature offset (feedback)°CRead
AVmin5TempOffsetRelative room setpoint offset from the BMS°CWrite
AV6RoomTempRoom temperature from the BMS°CWrite
AVmin7ActRoomTempActual room air temperature°CRead
AV8RelHumidRelative humidity from the BMS%RHWrite
AV9ActRelHumidRelative humidity (feedback)%RHRead
AV10VOC_RoomRoom VOC value from the BMSppmWrite
AV11ActVOC_RoomActual VOC valueppmRead
AV12VOC_OutsideOutdoor air VOC value from the BMSppmWrite
AV13DischAirTempSupply air actual temperature°CRead
AVmin14EffectSetptEffective room temperature setpoint°CRead
AV15RTempReturn temperature°CRead
AV16Sum_SupTotal supply air flow ratel/sRead
AV17Sum_ExhTotal extract air flow ratel/sRead
AV18SystemDevicesNumber of system devicesRead
BV1StartPCMWrite0=Off, 1=On
BVmin2FireEmergency switch-off for fire protectionWrite0=Normal, 1=Fire
BV3WindowSwitch-off from window contactWrite0=Close, 1=Open
BV4ExtraTimeExtension of operating timeWrite0=Inactive, 1=Active
BV5ActExtraTimeFeedback: operating time extension activeRead0=Inactive, 1=Active
BV6ActWindowFeedback: window contactRead0=Close, 1=Open
BVmin7FAlarmFrost protection alarmRead0=Normal, 1=Frostalarm
BVmin8Alarm1Alarm/error messageRead0=Normal, 1=Alarm1
BV9Alarm2Read0=Normal, 1=Alarm2
BV10ReleaseRead0=Off, 1=On
BV11Status_PowerSupplyHardware message: power supplyRead0=Normal, 1=LowPower
BV12Status_EMFSLIOHardware message: EM-FSLIO communicationRead0=Normal, 1=ComFail
BV13Status_FanHardware message: fanRead0=Normal, 1=FanBlocked
BV14Status_SensorHardware message: sensorRead0=Normal, 1=SensorFail
BV15Status_FilterHardware message: filterRead0=Normal, 1=FilterAlarm
BV16Status_FlowControlHardware message: flow controlRead0=Normal, 1=FlowAlarm
BV17Status_DamperHardware message: damperRead0=Normal, 1=CalibrationFail
BV18ActFireFeedback: fire switch-offRead0=Normal, 1=Fire
BV19FanForceWrite0=Inactive, 1=Active
BV20ActFanForceFeedback of FanForceRead0=Inactive, 1=Active
MV1COV-ModeHow unsolicited COV notifications are sentWrite1=Disabled, 2=Local Broadcast, 3=Global Broadcast
MV2ApplicModeOperating mode default settingWrite1=HVAC_NUL, 2=HVAC_AUTO, 3=HVAC_HEAT, 4=HVAC_MRNG_WRMUP, 5=HVAC_COOL, 6=HVAC_NIGHT_PURGE, 7=HVAC_PRE_COOL, 8=HVAC_OFF, 9=HVAC_TEST, 10=HVAC_EMERG_HEAT, 11=HVAC_FAN_ONLY, 12=HVAC_FREE_COOL, 13=HVAC_MAXHEAT, 14=HVAC_ECONOMY, 15=HVAC_DEHUMID
MV3ActApplicModeFeedback: actual operating stateRead1=HVAC_NUL, 2=HVAC_AUTO, 3=HVAC_HEAT, 4=HVAC_MRNG_WRMUP, 5=HVAC_COOL, 6=HVAC_NIGHT_PURGE, 7=HVAC_PRE_COOL, 8=HVAC_OFF, 9=HVAC_TEST, 10=HVAC_EMERG_HEAT, 11=HVAC_FAN_ONLY, 12=HVAC_FREE_COOL, 13=HVAC_MAXHEAT, 14=HVAC_ECONOMY, 15=HVAC_DEHUMID
MVmin4ModeOperating mode default setting by the central BMSWrite1=OCCUPIED, 2=UNOCCUPIED, 3=BOOST, 4=STANDBY, 5=NUL
MVmin5ActModeActual operating modeRead1=OCCUPIED, 2=UNOCCUPIED, 3=BOOST, 4=STANDBY, 5=NUL
MV6OccSensorOperating mode default from a PIR sensorWrite1=OCCUPIED, 2=UNOCCUPIED, 3=BOOST, 4=STANDBY, 5=NUL
MV7ChangeOverChangeover between heating and coolingWrite1=Off, 2=COOLING, 3=HEATING
MVmin8FanSpeedDefault setting of fan stageWrite1=Off, 2=LEVEL1, 3=LEVEL2, 4=LEVEL3, 5=LEVEL4, 6=LEVEL5, 7=AUTO
MV9ActFanSpeedFeedback: actual fan stage (hand or auto)Read1=Off (hand), 2=LEVEL1, 3=LEVEL2, 4=LEVEL3, 5=LEVEL4, 6=LEVEL5, 7=Off (auto), 8=LEVEL1, 9=LEVEL2, 10=LEVEL3, 11=LEVEL4, 12=LEVEL5
Object ID lookup: TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC 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 FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (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 FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP)

How many BACnet points does the TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP) have?

This list has 47 BACnet objects: 18 analog values, 20 binary values, 9 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP) BACnet points are writable?

18 of the 47 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 FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP) BACnet documentation?

The source is FSL-CONTROL II single room control system - installation and commissioning manual (BACnet MS/TP PICS and X-AIRCONTROL data point list) (A00000046303 V6), revision 2018-04, published free by TROX at https://www.trox.de/en/downloads/89ec5e20ea361fa7/SM_2018_04_A00000046303_FSL-CONTROL_II_V6_GB_en_web.pdf.

What are the minimum BACnet points to integrate the TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP)?

Start with MV 4 Mode (Occupancy preset: occupied, unoccupied, boost, standby); MV 8 FanSpeed (Fan stage preset: off, level 1-5 or auto); AV 5 TempOffset (Relative room setpoint offset, °C); BV 2 Fire (Fire protection switch-off from the BMS); MV 5 ActMode (Actual operating mode); AV 7 ActRoomTemp (Room air temperature); AV 14 EffectSetpt (Effective room temperature setpoint); BV 7 FAlarm (Frost protection alarm); BV 8 Alarm1 (Alarm/error message).

How do I enable BMS control of the TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP)?

MV 4 Mode is the operating mode default from the central BMS; 5 = NUL means no preset. MV 2 ApplicMode presets the HVAC mode (1 = HVAC_NUL, inactive).

Can the BMS supply sensor values to the TROX FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (BACnet MS/TP)?

AV 1 OutsideTemp, AV 6 RoomTemp, AV 8 RelHumid, AV 10 VOC_Room and AV 12 VOC_Outside take values written by the BMS; the Act* objects show what the controller uses.

How do I check these points on the real FSL-CONTROL II / X-AIRCONTROL with EM-BAC-MOD-01 XAC (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

Source: FSL-CONTROL II single room control system - installation and commissioning manual (BACnet MS/TP PICS and X-AIRCONTROL data point list) · A00000046303 V6 · rev. 2018-04. Object names, instances and units are reproduced as published; descriptions are our own.