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Thermostat (BACnet MS/TP) · BACnet points list
Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware BACnet points list
Updated 12 November 2026
The OS214 is a BACnet MS/TP room thermostat with 2 inputs, 1 analog output and 4 binary outputs. In its rooftop unit (RTU) application it runs single-stage RTU, heat pump, economizer and ECM fan presets selected with MSV-127. Setpoints, modes and occupancy are writable; demands, effective setpoints, supply and outdoor temperatures and the PID loops are readable.
This page lists 81 BACnet objects for the Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware — 59 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Strato Automation’s own free documentation, linked below.
- Manufacturer
- Strato Automation
- Model
- OPENSTAT OS214 / OS214x thermostat, RTU firmware
- Equipment
- Thermostat (BACnet MS/TP)
- Equipment type
- Thermostats, sensors & meters
- BACnet objects
- 81 (59 writable)
- Transport
- BACnet MS/TP
- Firmware
- Universal firmware 1.0.4 and later
- Also known as
- OS214, OS214W, OS214x, OpenStat OS214, OS214-RTU, Strato OS214
Reference only, provided as-is: verify against Strato Automation’s current documentation and the live device before use. Not official Strato Automation information. Terms of use.
BMS integration notes: Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware
Pick the application with MSV-127, then run the unit from the BMS with the system mode (MSV-3), fan mode (MSV-4), occupancy (BV-5 or MSV-6) and the room setpoint (AV-1). Monitor room temperature, heating and cooling demand and the help message (MSV-100) for alarms.
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 |
|---|---|---|---|
| MV 3 | MODE | System mode: Off, Auto, Cool, Heat | Write |
| MV 4 | FAN | Fan mode: On / Auto | Write |
| BV 5 | Occ_Sch | Occupancy schedule; BMS can write On/Off | Write |
| AV 1 | RoomTSP | Room temperature setpoint | Write |
| AI 6 | RoomT | Room temperature | Read |
| AV 9 | Eff_T | Effective temperature used for control | Read |
| AV 6 | HTG_Dem | Heating demand, % | Read |
| AV 7 | CLG_Dem | Cooling demand, % | Read |
| AV 16 | SATemp | Supply air temperature | Read |
| MV 100 | HELP_mess | Alarm message (Normal / SupplyFrozen) | Read |
Enable & remote start
Occupancy can be written to BV-5 (system occupancy schedule); MSV-45 selects where the schedule comes from and MSV-6 forces local, occupied or unoccupied.
Sensors & values from the BMS
MSV-2 and MSV-27/28 select room, outdoor and supply sensor locations; 'External' lets a value come from the network.
Network setup
- MS/TP address and baud are set in the thermostat's MSTP Config menu (setup menu: hold the two left buttons, then the PIN sequence).
- Strato recommends writing MSVs and AVs at the default priority (16) and everything else at priority 8 down to 3.
Watch out for
- Most MSVs are commissioning settings; avoid cyclic writes.
- Changing a custom output MSV switches MSV-127 to Custom.
Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware 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.
| Description | States | |||||
|---|---|---|---|---|---|---|
| BO | 1 | BO_1 | Output; function set by the MSV-127 preset | Command | ||
| BO | 2 | BO_2 | Output; function set by the MSV-127 preset | Command | ||
| BO | 3 | BO_3 | Output; function set by the MSV-127 preset | Command | ||
| BO | 4 | BO_4 | Output; function set by the MSV-127 preset | Command | ||
| AO | 1 | AO_1 | Output; function set by the MSV-127 preset | Command | ||
| AI | 1 | AI_1 | Input; function set by the configuration MSVs | Read | ||
| AI | 2 | AI_2 | Input; function set by the configuration MSVs | Read | ||
| AImin | 6 | RoomT | Room temperature | °F | Read | |
| AVmin | 1 | RoomTSP | Room Temperature setpoint (range 54-90°F (12-32°C)) | °F | Write | |
| AVmin | 6 | HTG_Dem | Heating demand (range 0-100%) | % | Read | |
| AVmin | 7 | CLG_Dem | Cooling demand (range 0-100%) | % | Read | |
| AVmin | 9 | Eff_T | Effective temperature used for control (range -40-122°F (-40-50°C)) | °F | Read | |
| AVmin | 16 | SATemp | Supply temperature (range -40-122°F (-40-50°C)) | °F | Read | |
| AV | 19 | SATFRSP_Set | Set supply freezing temperature (range -40-122°F (-40-50°C)) | °F | Write | |
| AV | 21 | ECM_min_Set | Fan analog min. output (range 0-100%) | % | Write | |
| AV | 24 | Fan_MinOn_Time | Fan minimum ON time (range 0-60 min) | min | Write | |
| AV | 27 | OvrTime_Set | Set occupancy override time (range 0-480 min) | min | Write | |
| AV | 28 | MotionOvrTime_Set | Motion Set occupancy override time (range 0-120 min) | min | Write | |
| AV | 29 | OATemp | Outside air temperature (range -40-122°F (-40-50°C)) | °F | Read | |
| AV | 33 | Min_SP | Set minimum setpoint (range 54-100°F (12-37.5°C)) | °F | Write | |
| AV | 34 | Max_SP | Set maximum setpoint (range 40-90°F (4.5-32°C)) | °F | Write | |
| AV | 35 | OccCLSP | Set occupied cooling setpoint | °F | Write | |
| AV | 36 | OccHTSP | Set occupied heating setpoint | °F | Write | |
| AV | 37 | SP_DB_Set | Set deadband (range 2 to 5°) | Write | ||
| AV | 38 | Unoc_CL_Set | Set unoccupied cooling setpoint | °F | Write | |
| AV | 39 | Unoc_HT_Set | Set unoccupied heating setpoint | °F | Write | |
| AV | 40 | STBCoolOffset | Set standby cooling offset (+) (range 2 to 10°F (1 to 6°C)) | °F | Write | |
| AV | 41 | STBHeatOffset | Set standby heating offset (-) (range -2 to -10°F (-1 to -6°C)) | °F | Write | |
| AV | 42 | EffCLSP | Effective cooling setpoint | Read | ||
| AV | 43 | EffHTSP | Effective heating setpoint | Read | ||
| AV | 50 | RT_Cal | Room temperature calib (range ±9.0°F (±5.0°C)) | °F | Write | |
| AV | 56 | SAT_HL_Set | Set supply air high limit setpoint (range 0-140°F (-17-60°C)) | °F | Write | |
| AV | 57 | SAT_CTR_Set | Set supply air neutral setpoint (range 0-140°F (-17-60°C)) | °F | Write | |
| AV | 58 | SAT_LL_Set | Set supply air low limit setpoint (range 0-140°F (-17-60°C)) | °F | Write | |
| AV | 59 | Eff_SAT | Effective supply air calc. setpoint (range 0-140°F (-17-60°C)) | °F | Read | |
| AV | 60 | ComprLockout | Compressor Lockout (range 0-140°F (-17-60°C)) | °F | Write | |
| AV | 65 | EconoMin_Pos | Eco min position (range 0-100%) | % | Write | |
| AV | 67 | OATheatOutAuth | Heating authorization (from OAT) (range 0-140°F (-17-60°C)) | °F | Write | |
| AV | 68 | OATeconOutAuth | Econo authorization (from OAT) (range 0-140°F (-17-60°C)) | °F | Write | |
| AV | 72 | OAT_AUX_Auth | OAT AUX authorization (range 0-140°F (-17-60°C)) | °F | Write | |
| BV | 2 | OVRSTAT | Occupancy override status | Read | Inactive = Normal, Active = Override | |
| BV | 4 | AutogenDesc | Autogenerate I/O descriptions | Write | Inactive = Off, Active = On | |
| BVmin | 5 | Occ_Sch | System occupancy schedule | Write | Inactive = Off, Active = On | |
| BV | 7 | Freeze_Status | Freeze condition status | Read | Inactive = Normal, Active = Active | |
| BV | 8 | Free_CL_Status | Free cooling authorization status | Read | Inactive = No, Active = Yes | |
| BV | 200 | LockStPointBtn | Lock Setpoint button | Write | Inactive = Unlock, Active = Lock | |
| BV | 201 | LockModeBtn | Lock Mode button | Write | Inactive = Unlock, Active = Lock | |
| BV | 202 | LockFanBtn | Lock Fan button | Write | Inactive = Unlock, Active = Lock | |
| BV | 203 | WifiStatus | Wifi Status | Read | Inactive = On, Active = Off | |
| MV | 1 | CFGSens | Remote thermistor 10K | Write | 1 = Type 3, 2 = Type 2 | |
| MV | 2 | AI_RS | Select room temperature input | Write | 1 = Intern, 2 = AI-1, 3 = AI-2 | |
| MVmin | 3 | MODE | System mode | Write | 1 = Off, 2 = Auto, 3 = Cool, 4 = Heat | |
| MVmin | 4 | FAN | Set fan mode | Write | 1 = On, 2 = Auto | |
| MV | 5 | Eff_Occ | Effective occupancy mode | Read | 1 = Occupied, 2 = Unoccup, 3 = TempOcc | |
| MV | 6 | Loc-Occ | Occupancy command | Write | 1 = Loc-Occ, 2 = Occupied, 3 = Unoccup | |
| MV | 7 | CFG_Y1 | Set cooling output 1 operation | Write | 1 = None, 2 = Off-On, 3 = 0-10V DA (direct), 4 = 0-10V RA (reversed), 5 = 2-10V DA (direct), 6 = 2-10V RA (reversed), 7 = Pulsed DA (direct), 8 = Pulsed RA (reversed) | |
| MV | 8 | CFG_Y2 | Set cooling output 2 operation | Write | 1 = None, 2 = Off-On | |
| MV | 16 | CFG_W1 | Set heating output 1 operation | Write | 1 = None, 2 = Off-On, 3 = 0-10V DA (direct), 4 = 0-10V RA (reversed), 5 = 2-10V DA (direct), 6 = 2-10V RA (reversed), 7 = Pulsed DA (direct), 8 = Pulsed RA (reversed), 9 = O (O/B), 10 = B (O/B) | |
| MV | 17 | CFG_W2 | Set heating output 2 operation | Write | 1 = None, 2 = Off-On, 3 = 0-10V DA (direct), 4 = 0-10V RA (reversed), 5 = 2-10V DA (direct), 6 = 2-10V RA (reversed), 7 = Pulsed DA (direct), 8 = Pulsed RA (reversed), 9 = O (O/B), 10 = B (O/B) | |
| MV | 23 | CFG_FAN | Select fan output | Write | 1 = BO-1, 2 = BO-1 & AO-1 | |
| MV | 27 | AI_OAT | Select outside air temp. input | Write | 1 = None, 2 = AI-1, 3 = AI-2, 4 = External | |
| MV | 28 | AI_SAT | Select supply air temp. input | Write | 1 = None, 2 = AI-1, 3 = AI-2, 4 = External | |
| MV | 30 | AO_ECO | Select economizer output | Write | 1 = None, 2 = AO-1 | |
| MV | 44 | BI_PIR | Select PIR Motion sensor input | Write | 1 = None, 2 = NO, AI1 (BI), 3 = NC, AI1 (BI), 4 = NO, AI2 (BI), 5 = NC, AI2 (BI), 6 = External | |
| MV | 45 | BI_SCH_Input | Select schedule input | Write | 1 = None (Off), 2 = None (On), 3 = Scheduler, 4 = AI-1, 5 = AI-2, 6 = External | |
| MV | 62 | CFGSetp | Room setpoint displayed | Write | 1 = Heat SP, 2 = Center, 3 = Cool SP | |
| MV | 65 | BO_OCC | Select occupied output | Write | 1 = None, 2 = BO-2, 3 = BO-3, 4 = BO-4, 5 = AO-1 | |
| MV | 70 | PB | CFG Heating/cooling proportional band | Write | 1 = 3F 1.2C, 2 = 4F 1.7C, 3 = 5F 2.2C, 4 = 6F 2.8C, 5 = 7F 3.3C, 6 = 8F 3.5C, 7 = 9F 5.0C, 8 = 10F 5.6C | |
| MVmin | 100 | HELP_mess | Help message | Read | 1 = Normal, 2 = SupplyFrozen | |
| MV | 127 | Preset | Select application | Write | 1 = RT 1C1H, 2 = RT 2C1H, 3 = RT ECON, 4 = HP1C2H, 5 = RT MOD, 6 = RT ECM, 7 = HP ECM, 8 = Custom | |
| MV | 200 | Brightness | Brightness control | Write | 1 = Low, 2 = Med-Low, 3 = Med | |
| MV | 201 | BgColor | Background color | Write | 1 = White, 2 = Orange, 3 = Blue, 4 = Green, 5 = Red | |
| MV | 202 | Display_Main | Main displayed value | Write | 1 = Temp, 2 = Setpoint, 3 = Nothing | |
| MV | 203 | Language | Language selection | Write | 1 = English | |
| MV | 204 | Display_Units | Temperature displayed units | Write | 1 = C, 2 = F | |
| LO | 1 | RoomT_Cool | Room temp cooling control loop | % | Read | |
| LO | 2 | RoomT_heat | Room temp heating control loop | % | Read | |
| LO | 6 | SupplyTemp | Supply temp control loop | % | Read | |
| LO | 7 | SupplyTempHL | Supply temp high limit control loop | % | Read | |
| LO | 8 | SupplyTempLL | Supply temp low limit control loop | % | Read | |
| SCH | 1 | OccSchedule | Occupancy schedule | Write |
No points match these filters.
Object ID lookup: Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware point IDs by name
BO1BO_1BO2BO_2BO3BO_3BO4BO_4AO1AO_1AI1AI_1AI2AI_2AI6RoomTAV1RoomTSPAV6HTG_DemAV7CLG_DemAV9Eff_TAV16SATempAV19SATFRSP_SetAV21ECM_min_SetAV24Fan_MinOn_TimeAV27OvrTime_SetAV28MotionOvrTime_SetAV29OATempAV33Min_SPAV34Max_SPAV35OccCLSPAV36OccHTSPAV37SP_DB_SetAV38Unoc_CL_SetAV39Unoc_HT_SetAV40STBCoolOffsetAV41STBHeatOffsetAV42EffCLSPAV43EffHTSPAV50RT_CalAV56SAT_HL_SetAV57SAT_CTR_SetAV58SAT_LL_SetAV59Eff_SATAV60ComprLockoutAV65EconoMin_PosAV67OATheatOutAuthAV68OATeconOutAuthAV72OAT_AUX_AuthBV2OVRSTATBV4AutogenDescBV5Occ_SchBV7Freeze_StatusBV8Free_CL_StatusBV200LockStPointBtnBV201LockModeBtnBV202LockFanBtnBV203WifiStatusMV1CFGSensMV2AI_RSMV3MODEMV4FANMV5Eff_OccMV6Loc-OccMV7CFG_Y1MV8CFG_Y2MV16CFG_W1MV17CFG_W2MV23CFG_FANMV27AI_OATMV28AI_SATMV30AO_ECOMV44BI_PIRMV45BI_SCH_InputMV62CFGSetpMV65BO_OCCMV70PBMV100HELP_messMV127PresetMV200BrightnessMV201BgColorMV202Display_MainMV203LanguageMV204Display_UnitsLO1RoomT_CoolLO2RoomT_heatLO6SupplyTempLO7SupplyTempHLLO8SupplyTempLLSCH1OccSchedule
Integration notes
- The guide has no read/write column. Access here follows its tags: Cfg, User and Cmd objects are shown writable, Status objects read-only, and BO/AO objects commandable (the guide lists them for output overrides). BV-5 (Occ_Sch) is tagged Status but shown writable because the guide says it can be written for occupancy.
- BO and AO descriptions are generated from the MSV-127 preset when BV-4 (Autogenerate I/O descriptions) is On.
- Changing any of MSV-7, 8, 16, 17, 23, 27, 28, 30, 44, 45 or 65 switches MSV-127 to Custom.
- Multistate state numbers follow the order the states are printed, starting at 1.
- The same guide has a separate FCU object list (see the OS214x FCU entry).
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 OPENSTAT OS214 / OS214x thermostat, RTU firmware 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 Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware
How many BACnet points does the Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware have?
This list has 81 BACnet objects: 3 analog inputs, 1 analog output, 32 analog values, 4 binary outputs, 9 binary values, 5 loops, 1 schedule, 26 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware BACnet points are writable?
59 of the 81 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 Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware BACnet documentation?
The source is OS214x (Universal Firmware) User Guide, Rooftop Unit (RTU) - BACnet Objects, revision Sept 2025 rev 5, published free by Strato Automation at https://stratoautomation.com/wp-content/uploads/2026/01/OS214x-Universal-Firmware-User-Guide-Sept-2025-rev-5.pdf.
What are the minimum BACnet points to integrate the Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware?
Start with MV 3 MODE (System mode: Off, Auto, Cool, Heat); MV 4 FAN (Fan mode: On / Auto); BV 5 Occ_Sch (Occupancy schedule; BMS can write On/Off); AV 1 RoomTSP (Room temperature setpoint); AI 6 RoomT (Room temperature); AV 9 Eff_T (Effective temperature used for control); AV 6 HTG_Dem (Heating demand, %); AV 7 CLG_Dem (Cooling demand, %); AV 16 SATemp (Supply air temperature); MV 100 HELP_mess (Alarm message (Normal / SupplyFrozen)).
How do I enable BMS control of the Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware?
Occupancy can be written to BV-5 (system occupancy schedule); MSV-45 selects where the schedule comes from and MSV-6 forces local, occupied or unoccupied.
Can the BMS supply sensor values to the Strato Automation OPENSTAT OS214 / OS214x thermostat, RTU firmware?
MSV-2 and MSV-27/28 select room, outdoor and supply sensor locations; 'External' lets a value come from the network.
How do I check these points on the real OPENSTAT OS214 / OS214x thermostat, RTU firmware?
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 Strato Automation BACnet points lists
- Thermostat (BACnet MS/TP)
Strato Automation OPENSTAT OS214 / OS214x thermostat, FCU firmware
Strato OS214 / OS214W room thermostats running the fan coil (2-pipe / 4-pipe) application of the universal firmware.
Also known as: OS214, OS214W, OS214x, OpenStat OS214, OS214-FCU, Strato OS214 - Thermostat (BACnet MS/TP)
Strato Automation OPENSTAT OS214-EH electric heat thermostat
Strato OS214-EH thermostats controlling electric heat (baseboard, duct heater) from room and/or supply temperature.
Also known as: OS214-EH, OS214EH, OpenStat OS214-EH, Strato OS214-EH - Thermostat (BACnet MS/TP)
Strato Automation OPENSTAT OS537 thermostat, FCU firmware
Strato OS537 thermostats running the 2-pipe / 4-pipe fan coil application of the universal firmware.
Also known as: OS537, OS537H, OS537MHC, OpenStat OS537, OS537-FCU, Strato OS537 - Thermostat (BACnet MS/TP)
Strato Automation OPENSTAT OS537 thermostat, RTU firmware
Strato OS537 temperature/humidity thermostats running the rooftop unit, heat pump and small AHU applications of the universal firmware.
Also known as: OS537, OS537H, OS537MHC, OpenStat OS537, OS537-RTU, Strato OS537 - Thermostat (BACnet MS/TP)
Strato Automation OPENSTAT OS537H-EH electric heat staging thermostat
Strato OS537H-EH thermostats controlling electric heat with up to six stages plus an SSR/SCR vernier stage.
Also known as: OS537H-EH, OS537HEH, OpenStat OS537H-EH, Strato OS537H-EH
Source: OS214x (Universal Firmware) User Guide, Rooftop Unit (RTU) - BACnet Objects · rev. Sept 2025 rev 5. Object names, instances and units are reproduced as published; descriptions are our own.