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Thermostat (BACnet MS/TP) · BACnet points list
Strato Automation OPENSTAT OS214 / OS214x thermostat, FCU firmware BACnet points list
Updated 12 November 2026
In its fan coil unit (FCU) application the OS214 drives a valve (BO-1 or AO-1) and a three-speed fan (BO-2 to BO-4) over BACnet MS/TP. The object list gives setpoints, mode, fan mode and occupancy commands, changeover and fan status, demands and two PID loops. It shares 38 object IDs with the RTU list but many objects differ.
This page lists 58 BACnet objects for the Strato Automation OPENSTAT OS214 / OS214x thermostat, FCU firmware — 39 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, FCU firmware
- Equipment
- Thermostat (BACnet MS/TP)
- Equipment type
- Thermostats, sensors & meters
- BACnet objects
- 58 (39 writable)
- Transport
- BACnet MS/TP
- Firmware
- Universal firmware 1.0.4 and later
- Also known as
- OS214, OS214W, OS214x, OpenStat OS214, OS214-FCU, 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, FCU firmware
Command the fan coil with the system mode (MSV-16), fan mode (MSV-17) and occupancy command (MSV-18), and write the room setpoint (AV-1). Read room temperature, demands, fan status (MSV-28) and changeover status.
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 16 | MODE | System mode: Off, N/A, Cool, Heat | Write |
| MV 17 | FAN | Fan mode: Lo, Med, Hi, Auto | Write |
| MV 18 | Occ_Cmd | Occupancy command: local, occupied, unoccupied | Write |
| AV 1 | RoomTSP | Room temperature setpoint | Write |
| AI 6 | RoomT | Room temperature | Read |
| MV 33 | Eff_Occ | Effective occupancy | Read |
| AV 21 | HTG_Dem | Heating demand, % | Read |
| AV 22 | CLG_Dem | Cooling demand, % | Read |
| MV 28 | FanStat | Fan speed status | Read |
| BV 40 | Ch_Over | Changeover: cool / heat | Read |
Enable & remote start
MSV-18 Occ_Cmd (tagged Cmd) sets occupancy from the BMS: Loc_Occ, Occupied or Unoccup.
Network setup
- MS/TP address and baud are set in the thermostat's MSTP Config menu.
- Strato recommends writing MSVs and AVs at the default priority (16) and everything else at priority 8 down to 3.
Watch out for
- MSV-14 (valve N.C./N.O.), MSV-15 (sequence) and MSV-58 (fan sequence) are commissioning settings.
Strato Automation OPENSTAT OS214 / OS214x thermostat, FCU 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 | Valve | Command | ||
| BO | 2 | BO_High | High-speed fan output | Command | ||
| BO | 3 | BO_Med | Medium-speed fan output | Command | ||
| BO | 4 | BO_Low | Low-speed fan output | Command | ||
| AO | 1 | AO_1 | Valve 0-10Vdc | % | Command | |
| AI | 1 | AI_1 | Analog input 1; dependent on MSV-48 | Read | ||
| AImin | 6 | RoomT | Room temperature | °F | Read | |
| AVmin | 1 | RoomTSP | Room Temperature setpoint (range 54-90°F (12-32°C)) | °F | Write | |
| AV | 7 | Eff_T | Effective temperature used for control (range -40-122°F (-40-50°C)) | °F | Read | |
| AV | 13 | Chov_T | Changeover temperature (range -40-122°F (-40-50°C)) | °F | Read | |
| AVmin | 21 | HTG_Dem | Heating demand (range 0-100%) | % | Read | |
| AVmin | 22 | CLG_Dem | Cooling demand (range 0-100%) | % | Read | |
| AV | 23 | Fan_HT__Demand | Fan heating demand (range 0-100%) | % | Read | |
| AV | 24 | Fan_CL__Demand | Fan cooling demand (range 0-100%) | % | Read | |
| AV | 30 | EffHTSP | Effective heating setpoint | °F | Read | |
| AV | 31 | EffCLSP | Effective cooling setpoint | °F | Read | |
| AV | 39 | OccHTSP | Occupied heating setpoint | °F | Write | |
| AV | 40 | OccCLSP | Occupied cooling setpoint | °F | Write | |
| AV | 43 | Unoc_HT_SP | Unoccupied heating setpoint | °F | Write | |
| AV | 44 | Unoc_CL_SP | Unoccupied cooling setpoint | °F | Write | |
| AV | 50 | RT_Cal | Room temperature calib (range -5 to 5) | Write | ||
| AV | 58 | MaxHTSP | Maximum heating setpoint (range 40-90°F (4.5-32°C)) | °F | Write | |
| AV | 59 | MinCLSP | Minimum cooling setpoint (range 54-100°F (12-37.5°C)) | °F | Write | |
| AV | 63 | SP_DB | Setpoint deadband (range 2 to 5) | Write | ||
| BV | 8 | OVRSTAT | Occupancy override status | Read | Inactive = Normal, Active = Overrid | |
| BV | 29 | AI1Stat | Analog input 1 binary contact status | Read | Inactive = Deactivated, Active = Activated | |
| BVmin | 40 | Ch_Over | Change over status | Read | Inactive = Cool, Active = Heat | |
| BV | 50 | AutoMod | Auto mode authorized | Write | Inactive = No, Active = Yes | |
| BV | 66 | KeepFan | Fan auto mode | Write | Inactive = Fan Low, Active = Fan Off | |
| BV | 78 | AO1_Dir | CFG AO1 action | Write | Inactive = Direct, Active = Reverse | |
| BV | 200 | LockStPoint | Lock Setpoint | Write | Inactive = Unlock, Active = Lock | |
| BV | 201 | LockMode | Lock Mode | Write | Inactive = Unlock, Active = Lock | |
| BV | 202 | LockFan | Lock Fan | Write | Inactive = Unlock, Active = Lock | |
| BV | 203 | WifiStatus | Wifi Status | Read | Inactive = Off, Active = On | |
| MV | 1 | CFGSens | Remote thermistor 10K | Write | 1 = Type 3, 2 = Type 2 | |
| MV | 2 | Tsource | Temperature input location | Write | 1 = AutoDet, 2 = Intern, 3 = AI-1, 4 = AI-2 | |
| MV | 14 | Valve_Type | Change operation of BO1 and AO1 | Write | 1 = N.C., 2 = N.O. | |
| MV | 15 | SeqOper | Control sequence of operation | Write | 1 = Cooling, 2 = Heating | |
| MVmin | 16 | MODE | System mode | Write | 1 = Off, 2 = N/A, 3 = Cool, 4 = Heat | |
| MVmin | 17 | FAN | Fan mode | Write | 1 = Lo, 2 = Med, 3 = Hi, 4 = Auto | |
| MVmin | 18 | Occ_Cmd | Occupancy command | Write | 1 = Loc_Occ, 2 = Occupied, 3 = Unoccup | |
| MVmin | 28 | FanStat | Fan status | Read | 1 = Off, 2 = Low, 3 = Med, 4 = High | |
| MVmin | 33 | Eff_Occ | Effective occupancy mode | Read | 1 = Occupied, 2 = Unoccup, 3 = TempOcc | |
| MV | 48 | AI1_CFG | Analog input 1 configuration | Write | 1 = None, 2 = COC/NH (Normally Heat ChangeOver Contact), 3 = COC/NC (Normally Cool ChangeOver Contact), 4 = COS (ChangeOver Sensor), 5 = SS (Supply sensor remote monitoring 10K sensor) | |
| MV | 58 | Fan_Seq | Control fan sequence | Write | 1 = L-M-H, 2 = L-H, 3 = L-M-H-A, 4 = L-H-A, 5 = On-Auto (use for single speed) | |
| MV | 62 | OvrTime | Override time delay | Write | Range: 0 - 24 hours | |
| MV | 65 | PB | Heating/Cooling proportional band | Write | Range: 3 F (1.2 C) - 10 F (5.6 C) | |
| MV | 70 | Display_SP | Setpoint displayed for user | Write | 1 = Heating, 2 = Center, 3 = Cooling | |
| MV | 77 | Valve_CPH | Valve output cycle per hour | Write | Range: 3 - 8 CPH | |
| 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 | PIDZoneCool | PID Zone cooling | % | Read | |
| LO | 2 | PIDZoneHeat | PID Zone heating | % | Read | |
| SCH | 1 | OccSchedule | Occupancy schedule | Write | ||
| AI | 2 | AI_2 | Analog input 2; dependent on MSV-2 | Read |
No points match these filters.
Object ID lookup: Strato Automation OPENSTAT OS214 / OS214x thermostat, FCU firmware point IDs by name
BO1BO_1BO2BO_HighBO3BO_MedBO4BO_LowAO1AO_1AI1AI_1AI6RoomTAV1RoomTSPAV7Eff_TAV13Chov_TAV21HTG_DemAV22CLG_DemAV23Fan_HT__DemandAV24Fan_CL__DemandAV30EffHTSPAV31EffCLSPAV39OccHTSPAV40OccCLSPAV43Unoc_HT_SPAV44Unoc_CL_SPAV50RT_CalAV58MaxHTSPAV59MinCLSPAV63SP_DBBV8OVRSTATBV29AI1StatBV40Ch_OverBV50AutoModBV66KeepFanBV78AO1_DirBV200LockStPointBV201LockModeBV202LockFanBV203WifiStatusMV1CFGSensMV2TsourceMV14Valve_TypeMV15SeqOperMV16MODEMV17FANMV18Occ_CmdMV28FanStatMV33Eff_OccMV48AI1_CFGMV58Fan_SeqMV62OvrTimeMV65PBMV70Display_SPMV77Valve_CPHMV200BrightnessMV201BgColorMV202Display_MainMV203LanguageMV204Display_UnitsLO1PIDZoneCoolLO2PIDZoneHeatSCH1OccScheduleAI2AI_2
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).
- AI-2 is printed in the I/O table without a row border and was read from the page text.
- Multistate state numbers follow the order the states are printed, starting at 1.
- MSV-62, MSV-65 and MSV-77 print a value range instead of a state list.
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, FCU 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, FCU firmware
How many BACnet points does the Strato Automation OPENSTAT OS214 / OS214x thermostat, FCU firmware have?
This list has 58 BACnet objects: 3 analog inputs, 1 analog output, 17 analog values, 4 binary outputs, 10 binary values, 2 loops, 1 schedule, 20 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, FCU firmware BACnet points are writable?
39 of the 58 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, FCU firmware BACnet documentation?
The source is OS214x (Universal Firmware) User Guide, Fan Coil Unit (FCU) - 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, FCU firmware?
Start with MV 16 MODE (System mode: Off, N/A, Cool, Heat); MV 17 FAN (Fan mode: Lo, Med, Hi, Auto); MV 18 Occ_Cmd (Occupancy command: local, occupied, unoccupied); AV 1 RoomTSP (Room temperature setpoint); AI 6 RoomT (Room temperature); MV 33 Eff_Occ (Effective occupancy); AV 21 HTG_Dem (Heating demand, %); AV 22 CLG_Dem (Cooling demand, %); MV 28 FanStat (Fan speed status); BV 40 Ch_Over (Changeover: cool / heat).
How do I enable BMS control of the Strato Automation OPENSTAT OS214 / OS214x thermostat, FCU firmware?
MSV-18 Occ_Cmd (tagged Cmd) sets occupancy from the BMS: Loc_Occ, Occupied or Unoccup.
How do I check these points on the real OPENSTAT OS214 / OS214x thermostat, FCU 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, RTU firmware
Strato OS214 / OS214W (Wi-Fi) room thermostats running the rooftop-unit / heat-pump application of the universal firmware.
Also known as: OS214, OS214W, OS214x, OpenStat OS214, OS214-RTU, 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, Fan Coil Unit (FCU) - BACnet Objects · rev. Sept 2025 rev 5. Object names, instances and units are reproduced as published; descriptions are our own.