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Room sensor / operator unit · BACnet points list
Regin Regio RUX room unit / display (firmware 2.1) BACnet points list
Updated 6 November 2026
Regio RUX is a room unit with display and sensors in the Regio family, connected over RS485 (EXOline, Modbus or BACnet MS/TP). The variable list gives 83 BACnet objects: room temperature, CO2, humidity and VOC readings, state setpoints and offset, fan selection, remote values with enable selectors, CO2 LED limits and display settings.
This page lists 83 BACnet objects for the Regin Regio RUX room unit / display (firmware 2.1) — 70 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Regin’s own free documentation, linked below.
- Manufacturer
- Regin
- Model
- Regio RUX room unit / display (firmware 2.1)
- Equipment
- Room sensor / operator unit
- Equipment type
- Thermostats, sensors & meters
- BACnet objects
- 83 (70 writable)
- Transport
- BACnet MS/TP
- Firmware
- 2.1-1-xx
- Also known as
- RUX, Regio RUX, RUX 2.1-1-xx, Regin RUX
Reference only, provided as-is: verify against Regin’s current documentation and the live device before use. Not official Regin information. Terms of use.
BMS integration notes: Regin Regio RUX room unit / display (firmware 2.1)
Read AV 10002 room temperature, AV 10011 CO2, AV 10071 humidity and AV 10081 active setpoint; write the state setpoints or AV 10401 offset if the BMS manages them. Keep BV 9101 HeartbeatTrigger pulsing if the offline function is used.
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 |
|---|---|---|---|
| AV 10401 | RC_RoomSetpointOffset | Setpoint offset, °C | Write |
| BV 9101 | HeartbeatTrigger | Write 1 periodically to stay in normal mode | Write |
| AV 10002 | RC_RoomTemp | Room temperature, °C | Read |
| AV 10011 | RC_CO2Level | Room CO2, ppm | Read |
| AV 10071 | RC_Humidity | Room relative humidity | Read |
| AV 10081 | RC_RoomActiveSetpoint | Active room setpoint, °C | Read |
| MV 10031 | RC_FanSelect | Fan speed selected on the unit | Read |
Heartbeat & communication loss
BV 9101 HeartbeatTrigger must be written to 1 periodically (the unit resets it to 0); MV 9301 RC_OfflineFunction sets the reaction when it stops. No timeout is given.
Sensors & values from the BMS
AV 10611 / 10621 / 10681 / 10691 take remote room temperature, CO2, humidity and VOC values, each enabled by its …RemoteSelect BV.
Network setup
- Port 1 (RS485) protocol, baud rate and format are MV 9001 / 9101 / 9201; write BV 9001 CommCommit = 1 to apply them.
Regin Regio RUX room unit / display (firmware 2.1) 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 | |||||
|---|---|---|---|---|---|---|
| PIV | 9011 | Wink | Wink for this amount of time in seconds | Write | ||
| BV | 9001 | CommCommit | Commit communication settings | Write | ||
| MV | 9001 | Port1Mode | Comm | Write | 1=PORT_MODE_INACTIVE, 3=PORT_MODE_EXOLINE_SLAVE, 14=PORT_MODE_BACNET, 16=PORT_MODE_MODBUS_SLAVE, 22=PORT_MODE_EXOLINE_MODBUS_SLAVE | |
| MV | 9101 | Port1Baud | Comm | Write | 1=UART_BAUD_9600, 3=UART_BAUD_2400, 4=UART_BAUD_1200, 16=UART_BAUD_19k2, 18=UART_BAUD_38k4, 19=UART_BAUD_57k6, 21=UART_BAUD_115k2, 22=UART_BAUD_230k4, 23=UART_BAUD_460k8, 26=UART_BAUD_921k6, 27=UART_BAUD_1M, 28=UART_BAUD_250k | |
| MV | 9201 | Port1Format | Comm | Write | 17=UART_FORMAT_8N1, 25=UART_FORMAT_8N2, 49=UART_FORMAT_8E1, 57=UART_FORMAT_8E2, 113=UART_FORMAT_8O1, 121=UART_FORMAT_8O2 | |
| BVmin | 9101 | HeartbeatTrigger | Write 1 to this register periodically for keep system running in normal | Write | ||
| MV | 9301 | RC_OfflineFunction | Offline function | Write | 1=DISABLED, 2=OUTPUT_DEFAULT, 3=APPLICATION, 4=OUTPUT_DEFAULT_START_OFFLINE | |
| AVmin | 10002 | RC_RoomTemp | Room temperature | °C | Read | |
| AVmin | 10011 | RC_CO2Level | Room CO2 level | ppm | Read | |
| AVmin | 10071 | RC_Humidity | Relative humidity | %RH | Read | |
| AVmin | 10081 | RC_RoomActiveSetpoint | Active room control setpoint | °C | Read | |
| AV | 10281 | RC_VOC | VOC index | Read | ||
| AV | 10291 | RC_DisplayViewValue | Value to be shown in the display | Read | ||
| AV | 10301 | RC_DisplaySetpointValue | Setpoint display at setpoint adjustment | Read | ||
| MV | 10021 | RC_CO2Indicator | RGB CO2 indication | Read | 1=OFF, 2=GREEN, 3=YELLOW, 4=RED | |
| AV | 10331 | RC_RoomSetpointHeatOff | Heating setpoint in Off state (frost protection) | °C | Write | |
| AV | 10341 | RC_RoomSetpointHeatUnoccupied | Heating setpoint in Unoccupied state | °C | Write | |
| AV | 10351 | RC_RoomSetpointHeatStandby | Heating setpoint in Standby state | °C | Write | |
| AV | 10361 | RC_RoomSetpointHeatOccupied | Heating setpoint in Occupied state | °C | Write | |
| AV | 10371 | RC_RoomSetpointCoolUnoccupied | Cooling setpoint in Unoccupied state | °C | Write | |
| AV | 10381 | RC_RoomSetpointCoolStandby | Cooling setpoint in Standby state | °C | Write | |
| AV | 10391 | RC_RoomSetpointCoolOccupied | Cooling setpoint in Occupied state | °C | Write | |
| AVmin | 10401 | RC_RoomSetpointOffset | Setpoint offset | °C | Write | |
| AV | 10411 | RC_RoomSetpointOffsetMaxPos | Maximum positive setpoint offset | °C | Write | |
| AV | 10421 | RC_RoomSetpointOffsetMaxNeg | Maximum negative setpoint offset | °C | Write | |
| MVmin | 10031 | RC_FanSelect | Fan speed setting | Read | 1=OFF, 2=SPEED1, 3=SPEED2, 4=SPEED3, 5=AUTO | |
| AV | 10611 | RC_RoomTempRemote | Remote setting of room temperature | °C | Write | |
| AV | 10621 | RC_CO2LevelRemote | Remote setting of room CO2 level | ppm | Write | |
| AV | 10681 | RC_HumidityRemote | Remote setting of relative humidity | %RH | Write | |
| AV | 10691 | RC_VOCRemote | Remote setting of VOC index | Write | ||
| BV | 10321 | RC_RoomTempRemoteSelect | Enable remote setting of room temperature | Write | ||
| BV | 10331 | RC_CO2LevelRemoteSelect | Enable remote setting of room CO2 level | Write | ||
| BV | 10391 | RC_HumidityRemoteSelect | Enable remote setting of relative humidity | Write | ||
| BV | 10401 | RC_VOCRemoteSelect | Enable remote setting of VOC index | Write | ||
| MV | 10221 | RC_DisplayViewMode | Select value to be shown in the display | Write | 1=ACTUAL, 2=HEAT_SETP, 3=COOL_SETP, 4=HEAT_COOL_AVG, 5=OFFSET, 6=CO2, 7=HEAT_OFFS, 8=COOL_OFFS, 9=AVG_OFFS, 10=CALC_FLOW, 11=ACTIVE_OFFS | |
| MV | 10231 | RC_DisplaySetpointMode | Select setpoint display at setpoint adjustment | Write | 1=OFFSET, 2=ACTIVE_OFFS, 3=HEAT_OFFS, 4=COOL_OFFS, 5=HEAT_OCC_OFFS, 6=COOL_OCC_OFFS, 7=AVG_OFFS | |
| AV | 10891 | RC_CO2LevelYellow | CO2 level for yellow led | ppm | Write | |
| AV | 10901 | RC_CO2LevelRed | CO2 level for red led | ppm | Write | |
| AV | 1005 | IoAnaIn_5_value | Room temperature from internal sensor | Read | ||
| AV | 1006 | IoAnaIn_6_value | Room humidity from internal sensor | Read | ||
| AV | 1007 | IoAnaIn_7_value | Room VOC from internal sensor | Read | ||
| AV | 1008 | IoAnaIn_8_value | Room CO2 from internal sensor | Read | ||
| AV | 8001 | Disp_BrightnessFull | Display brightness, full (%) | % | Write | |
| AV | 8011 | Disp_BrightnessDim | Display brightness, dimmed (%) | % | Write | |
| AV | 8021 | Disp_TimeFull | Display time in full mode | s | Write | |
| AV | 8031 | Disp_TimeDim | Display time in dimmed mode | s | Write | |
| MV | 11000 | rt_text_font | What font to use for the display text | Write | ||
| MV | 11001 | rt_text_mode | Single or dual row text in display | Write | ||
| MV | 11002 | rt_text_display_scroll_mode | Scroll mode | Write | 1=SCROLL_WRAP, 2=SCROLL_BOUNCE, 3=SCROLL_WRAP_SYNC, 4=SCROLL_BOUNCE_SYNC | |
| AV | 11007 | rt_text_display_scroll_speed | Time in ms between scrolling one pixel | ms | Write | |
| MV | 11003 | rt_text_visability | When to show the custom text | Write | ||
| AV | 11008 | rt_text_timeleft | Time to show the custom text | s | Write | |
| CSV | 11000 | rt_text_row_1 | String to show on row 1 in the display | Write | ||
| CSV | 11001 | rt_text_row_2 | String to show on row 2 in the display | Write | ||
| MV | 11004 | rt_fb_visability | When to show the custom frame buffer | Write | ||
| AV | 11009 | rt_fb_timeleft | Time to show the custom frame buffer | s | Write | |
| AV | 11010 | rt_fb_row0 | Frame buffer data for row 0 on the display | s | Write | |
| AV | 11011 | rt_fb_row1 | Frame buffer data for row 1 on the display | s | Write | |
| AV | 11012 | rt_fb_row2 | Frame buffer data for row 2 on the display | s | Write | |
| AV | 11013 | rt_fb_row3 | Frame buffer data for row 3 on the display | s | Write | |
| AV | 11014 | rt_fb_row4 | Frame buffer data for row 4 on the display | s | Write | |
| AV | 11015 | rt_fb_row5 | Frame buffer data for row 5 on the display | s | Write | |
| AV | 11016 | rt_fb_row6 | Frame buffer data for row 6 on the display | s | Write | |
| AV | 11017 | rt_fb_row7 | Frame buffer data for row 7 on the display | s | Write | |
| AV | 11018 | rt_fb_row8 | Frame buffer data for row 8 on the display | s | Write | |
| AV | 11019 | rt_fb_row9 | Frame buffer data for row 9 on the display | s | Write | |
| AV | 11020 | rt_fb_row10 | Frame buffer data for row 10 on the display | s | Write | |
| AV | 8040 | CM1CurrentAlt | Current alternative for Custom Menu 1 | Write | ||
| AV | 8041 | CM1CurrentValue | Current value for Custom Menu 1 | Write | ||
| AV | 8042 | CM2CurrentAlt | Current alternative for Custom Menu 2 | Write | ||
| AV | 8043 | CM2CurrentValue | Current value for Custom Menu 2 | Write | ||
| AV | 8044 | CM3CurrentAlt | Current alternative for Custom Menu 3 | Write | ||
| AV | 8045 | CM3CurrentValue | Current value for Custom Menu 3 | Write | ||
| AV | 8046 | CM4CurrentAlt | Current alternative for Custom Menu 4 | Write | ||
| AV | 8047 | CM4CurrentValue | Current value for Custom Menu 4 | Write | ||
| AV | 8048 | CM5CurrentAlt | Current alternative for Custom Menu 5 | Write | ||
| AV | 8049 | CM5CurrentValue | Current value for Custom Menu 5 | Write | ||
| AV | 8050 | CM6CurrentAlt | Current alternative for Custom Menu 6 | Write | ||
| AV | 8051 | CM6CurrentValue | Current value for Custom Menu 6 | Write | ||
| AV | 8052 | CM7CurrentAlt | Current alternative for Custom Menu 7 | Write | ||
| AV | 8053 | CM7CurrentValue | Current value for Custom Menu 7 | Write | ||
| AV | 8054 | CM8CurrentAlt | Current alternative for Custom Menu 8 | Write | ||
| AV | 8055 | CM8CurrentValue | Current value for Custom Menu 8 | Write |
No points match these filters.
Object ID lookup: Regin Regio RUX room unit / display point IDs by name
PIV9011WinkBV9001CommCommitMV9001Port1ModeMV9101Port1BaudMV9201Port1FormatBV9101HeartbeatTriggerMV9301RC_OfflineFunctionAV10002RC_RoomTempAV10011RC_CO2LevelAV10071RC_HumidityAV10081RC_RoomActiveSetpointAV10281RC_VOCAV10291RC_DisplayViewValueAV10301RC_DisplaySetpointValueMV10021RC_CO2IndicatorAV10331RC_RoomSetpointHeatOffAV10341RC_RoomSetpointHeatUnoccupiedAV10351RC_RoomSetpointHeatStandbyAV10361RC_RoomSetpointHeatOccupiedAV10371RC_RoomSetpointCoolUnoccupiedAV10381RC_RoomSetpointCoolStandbyAV10391RC_RoomSetpointCoolOccupiedAV10401RC_RoomSetpointOffsetAV10411RC_RoomSetpointOffsetMaxPosAV10421RC_RoomSetpointOffsetMaxNegMV10031RC_FanSelectAV10611RC_RoomTempRemoteAV10621RC_CO2LevelRemoteAV10681RC_HumidityRemoteAV10691RC_VOCRemoteBV10321RC_RoomTempRemoteSelectBV10331RC_CO2LevelRemoteSelectBV10391RC_HumidityRemoteSelectBV10401RC_VOCRemoteSelectMV10221RC_DisplayViewModeMV10231RC_DisplaySetpointModeAV10891RC_CO2LevelYellowAV10901RC_CO2LevelRedAV1005IoAnaIn_5_valueAV1006IoAnaIn_6_valueAV1007IoAnaIn_7_valueAV1008IoAnaIn_8_valueAV8001Disp_BrightnessFullAV8011Disp_BrightnessDimAV8021Disp_TimeFullAV8031Disp_TimeDimMV11000rt_text_fontMV11001rt_text_modeMV11002rt_text_display_scroll_modeAV11007rt_text_display_scroll_speedMV11003rt_text_visabilityAV11008rt_text_timeleftCSV11000rt_text_row_1CSV11001rt_text_row_2MV11004rt_fb_visabilityAV11009rt_fb_timeleftAV11010rt_fb_row0AV11011rt_fb_row1AV11012rt_fb_row2AV11013rt_fb_row3AV11014rt_fb_row4AV11015rt_fb_row5AV11016rt_fb_row6AV11017rt_fb_row7AV11018rt_fb_row8AV11019rt_fb_row9AV11020rt_fb_row10AV8040CM1CurrentAltAV8041CM1CurrentValueAV8042CM2CurrentAltAV8043CM2CurrentValueAV8044CM3CurrentAltAV8045CM3CurrentValueAV8046CM4CurrentAltAV8047CM4CurrentValueAV8048CM5CurrentAltAV8049CM5CurrentValueAV8050CM6CurrentAltAV8051CM6CurrentValueAV8052CM7CurrentAltAV8053CM7CurrentValueAV8054CM8CurrentAltAV8055CM8CurrentValue
Integration notes
- Taken from Regin's variable list (xlsx), "Default BACnet name", "Object type", "Instance", "Unit" and "Writeable" columns; the same file lists the EXOline and Modbus addresses.
- Names follow the variable list's "Default BACnet name" column. Regin's EDE zip for RCX/RTX/RUX 2.1-1-01 holds only an RCX file, which uses upper-case names (for example REG_CONTROLLERSTATE) and repeats instances, so it was not used for names.
- Multistate state texts come from the RCX EDE state-text file (matched by instance or object name); the variable list does not print them.
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 Regio RUX room unit / display (firmware 2.1) 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 Regin Regio RUX room unit / display (firmware 2.1)
How many BACnet points does the Regin Regio RUX room unit / display (firmware 2.1) have?
This list has 83 BACnet objects: 61 analog values, 6 binary values, 13 multi-state values, 2 characterstring values, 1 positive integer value. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Regin Regio RUX room unit / display (firmware 2.1) BACnet points are writable?
70 of the 83 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 Regin Regio RUX room unit / display (firmware 2.1) BACnet documentation?
The source is RUX-... 2.1-1-xx - Variable list (variables_rux_2.1-1-xx (Revision A)), published free by Regin at https://www.regincontrols.com/globalassets/pimmediafiles/documents/variables_rux_2.1-1-xx.xlsx.
What are the minimum BACnet points to integrate the Regin Regio RUX room unit / display (firmware 2.1)?
Start with AV 10401 RC_RoomSetpointOffset (Setpoint offset, °C); BV 9101 HeartbeatTrigger (Write 1 periodically to stay in normal mode); AV 10002 RC_RoomTemp (Room temperature, °C); AV 10011 RC_CO2Level (Room CO2, ppm); AV 10071 RC_Humidity (Room relative humidity); AV 10081 RC_RoomActiveSetpoint (Active room setpoint, °C); MV 10031 RC_FanSelect (Fan speed selected on the unit).
Does the Regin Regio RUX room unit / display (firmware 2.1) need a BACnet heartbeat or have a communication timeout?
BV 9101 HeartbeatTrigger must be written to 1 periodically (the unit resets it to 0); MV 9301 RC_OfflineFunction sets the reaction when it stops. No timeout is given.
Can the BMS supply sensor values to the Regin Regio RUX room unit / display (firmware 2.1)?
AV 10611 / 10621 / 10681 / 10691 take remote room temperature, CO2, humidity and VOC values, each enabled by its …RemoteSelect BV.
How do I check these points on the real Regio RUX room unit / display (firmware 2.1)?
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 Regin BACnet points lists
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Also known as: Regio Midi, RC-CDFO, RC-CDTO, RC-C3DOC, RC-C3DFOC, RCC-C3DOCS, RC-C - Room controller (fan coil / VAV / chilled beam)
Regin Regio RCX room controller (firmware 2.1)
Regin Regio RCX room controllers with firmware 2.1 (fan coil, radiator, chilled beam and VAV applications).
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Regin Regio RTX room transmitter (firmware 2.0)
Regin Regio RTX room transmitters (temperature, CO2, humidity, VOC, presence) with firmware 2.0.
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Regin RegioArdo 24 V AC pre-programmed two-room controllers for dampers, chilled beams and radiators, used with ED-RU room units.
Also known as: Regio Ardo, RegioArdo, Regio Ardo 2.0 - Fan coil room controller
Regin RegioEedo fan coil room controller
Regin RegioEedo 230 V AC pre-programmed fan coil controllers, used with ED-RU room units.
Also known as: Regio Eedo, RegioEedo, Regio Eedo 2.0
Source: RUX-... 2.1-1-xx - Variable list · variables_rux_2.1-1-xx (Revision A). Object names, instances and units are reproduced as published; descriptions are our own.