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OPENSTAT OS537 thermostat, RTU firmware

Thermostat (BACnet MS/TP) · BACnet points list

Strato Automation OPENSTAT OS537 thermostat, RTU firmware BACnet points list

Updated 12 November 2026

Short answer

The OS537 is a larger BACnet MS/TP thermostat with 5 universal inputs, 3 analog outputs and 7 binary outputs, plus humidity and (C models) CO2 sensing. Its RTU application covers up to four cooling and four heating stages, economizer with enthalpy and mixed air control, power exhaust, humidification and dehumidification, selected with the MSV-127 preset. The list also includes the radar presence sensor settings.

This page lists 123 BACnet objects for the Strato Automation OPENSTAT OS537 thermostat, RTU firmware — 84 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 OS537 thermostat, RTU firmware
Equipment: Thermostat (BACnet MS/TP)
Equipment type: Thermostats, sensors & meters
BACnet objects: 123 (84 writable)
Transport: BACnet MS/TP
Firmware: Universal firmware 1.2.6 and later
Also known as: OS537, OS537H, OS537MHC, OpenStat OS537, OS537-RTU, Strato OS537
Source document: OS537 (Universal Firmware) User Guide, Rooftop Unit (RTU) - BACnet Objects · rev. July 2026 rev 0

Download CSV 123 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 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 OS537 thermostat, RTU firmware

Integration in brief

Select the application with MSV-127, then command system mode (MSV-3), fan mode (MSV-4) and occupancy (BV-5 or MSV-6) and write the room setpoint (AV-1). Read room temperature and humidity, demands, supply and outdoor temperatures 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
AI 7	RoomRH	Room humidity	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 / help message	Read

Enable & remote start

Occupancy can be written to BV-5; MSV-45 selects the schedule source and MSV-6 forces local, occupied or unoccupied.

Sensors & values from the BMS

Sensor location MSVs (MSV-2, 27, 28, 52, 54, 57, 58) can be set to 'External' to take the value from the network.

Network setup

MS/TP is the default network; address and baud are set in the MSTP Config menu. A Wi-Fi option is described in a separate Strato guide.
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; changing a custom output MSV switches MSV-127 to Custom.

Strato Automation OPENSTAT OS537 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.

123 of 123 shown

Type

Multi-state

Access

Units

Show

Strato Automation OPENSTAT OS537 thermostat, RTU firmware BACnet Points List
			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
BO	5	BO_5	Output; function set by the MSV-127 preset		Command
BO	6	BO_6	Output; function set by the MSV-127 preset		Command
BO	7	BO_7	Output; function set by the MSV-127 preset		Command
AO	1	AO_1	Output; function set by the MSV-127 preset		Command
AO	2	AO_2	Output; function set by the MSV-127 preset		Command
AO	3	AO_3	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
AI	3	AI_3	Input; function set by the configuration MSVs		Read
AI	4	AI_4	Input; function set by the configuration MSVs		Read
AI	5	AI_5	Input; function set by the configuration MSVs		Read
AImin	6	RoomT	Room temperature	°F	Read
AImin	7	RoomRH	Room humidity	%	Read
AI	8	RoomCO2	Room CO2	ppm	Read
BI	1	Motion	Motion detection		Read	On / Off
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
AV	9	Eff_T	Effective temperature used for control (range -40-122°F (-40-50°C))	°F	Read
AVmin	16	SATemp	Supply air 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	29	OATemp	Outdoor air temperature (range -40-122°F (-40-50°C))	°F	Read
AV	31	CO2_SP_Set	Set CO2 Setpoint (range 0-2000 PPM)	ppm	Write
AV	33	MinCLSP	Set minimum cooling setpoint (range 54-100°F (12-37.5°C))	°F	Write
AV	34	MaxHTSP	Set maximum heating setpoint (range 40-90°F (4.5-32°C))	°F	Write
AV	35	OccCLSP	Set occupied cooling setpoint	°F	Read
AV	36	OccHTSP	Set occupied heating setpoint	°F	Read
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 5°)		Write
AV	41	STBHeatOffset	Set standby heating offset (-) (range -2 to -5°)		Write
AV	42	EffCLSP	Effective cooling setpoint		Read
AV	43	EffHTSP	Effective heating setpoint		Read
AV	50	RT_Cal	Room temperature calib (range -5.0 to 5.0)		Write
AV	51	Eff_RH	Effective humidity used for control (range 0-100%)	%	Read
AV	52	HUM_SP	Set humidity setpoint (range 0-100%)	%	Write
AV	53	SAH	Supply humidity reading (range 0-100%)	%	Read
AV	54	SAH_HL_Set	Supply humidity high limit setpoint (range 50-98%)	%	Write
AV	55	DEH_SP	Set dehum setpoint (range 0-100%)	%	Write
AV	56	SAT_HL_Set	Set supply air high limit setpoint (range 0.0-140°F (0.0-60°C))	°F	Write
AV	57	SAT_CTR_Set	Set supply air neutral setpoint (range 0.0-140°F (0.0-60°C))	°F	Write
AV	58	SAT_LL_Set	Set supply air low limit setpoint (range 0.0-140°F (0.0-60°C))	°F	Write
AV	59	Eff_SAT	Effective supply air calc. setpoint (range 0.0-140°F (0.0-60°C))	°F	Read
AV	60	ComprLockout	Compressor Lockout (range 0.0-140°F (0.0-60°C))	°F	Write
AV	65	EconoMin_Pos	Eco min position (range 0-100%)	%	Write
AV	66	EconoMaxCO2Pos	Econo max position (for CO2) (range 0-100%)	%	Write
AV	67	OATheatOutAuth	Heating authorization (from OAT) (range 0.0-140°F (0.0-60°C))	°F	Write
AV	68	OATeconOutAuth	Economizer authorization (from OAT) (range 0.0-140°F (0.0-60°C))	°F	Write
AV	75	OAH	Outside air humidity (range 0-100%)	%	Read
AV	76	OAE	Outside air enthalpy (range 10-55 BTU/lbs)	BTU/lb	Read
AV	77	EnthSP	Enthalpy setpoint (range 20-28 BTU/lbs)	BTU/lb	Write
AV	78	MATSP	Mixed air temperature for economizer (range 0.0-140°F (0.0-60°C))	°F	Write
AV	79	MAT	Mixed air temperature (range 0.0-140°F (0.0-60°C))	°F	Read
BV	2	OVRSTAT	Occupancy override status		Read	Inactive = Normal, Active = Override
BV	3	Mot_Det	Motion detection		Read	Inactive = None, Active = Moving
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	21	EnthalpyAuth	Enthalpy Authorize		Read	Inactive = No, Active = Yes
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, 4 = AI-3, 5 = AI-4, 6 = AI-5
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, 4 = Standby
MV	6	Occ_Cmd	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, 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	9	CFG_Y3	Set cooling output 3 operation		Write	1 = None, 2 = Off-On
MV	10	CFG_Y4	Set cooling output 4 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	18	CFG_W3	Set heating output 3 operation		Write	1 = None, 2 = Off-On
MV	19	CFG_W4	Set heating output 4 operation		Write	1 = None, 2 = Off-On
MV	23	CFG_FAN	Select fan output		Write	1 = BO-1, 2 = BO-2, 3 = AO-1, 4 = AO-2, 5 = BO-1 & AO-1, 6 = BO-1 & AO-2
MV	27	AI_OAT	Select outside air temp. input		Write	1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = External
MV	28	AI_SAT	Select supply air temp. input		Write	1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = External
MV	30	AO_ECO	Select economizer output		Write	1 = None, 2 = BO-5, 3 = BO-6, 4 = BO-7, 5 = AO-1, 6 = AO-2, 7 = AO-3
MV	32	CFG_EXH	Select power exhaust output		Write	1 = None, 2 = BO-6, 3 = BO-7, 4 = AO-3, 5 = BO-6 & AO-3, 6 = BO-7 & AO-3
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 = NO, AI3 (BI), 7 = NC, AI3 (BI), 8 = NO, AI4 (BI), 9 = NC, AI4 (BI), 10 = External, 11 = Intern
MV	45	BI_SCH_Input	Select schedule input		Write	1 = None (Off), 2 = None (On), 3 = Scheduler, 4 = AI-1, 5 = AI-2, 6 = AI-3, 7 = AI-4, 8 = AI-5, 9 = External
MV	48	BO_HUM	Select humidifier BO output		Write	1 = None, 2 = BO-2, 3 = BO-3, 4 = BO-4, 5 = BO-5, 6 = BO-6, 7 = BO-7, 8 = BO-5 & BO-6 (Two stages), 9 = BO-6 & BO-7 (Two stages)
MV	49	AO_HUM	Select humidifier AO output		Write	1 = None, 2 = AO-1, 3 = AO-2, 4 = AO-3
MV	52	AI_RH	Select room humidity input		Write	1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = External, 8 = Intern
MV	54	AI_SRH	Select supply humidity input		Write	1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = External
MV	55	AIC_SRH	Set supply humidity input signal		Write	1 = 0-10V, 2 = 2-10V
MV	57	OAH_Loc	Outside humidity physical input loc.		Write	1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = External, 8 = Intern
MV	58	MAT_Loc	Mixed air temperature sensor loc.		Write	1 = None, 2 = AI-1, 3 = AI-2, 4 = AI-3, 5 = AI-4, 6 = AI-5, 7 = 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 = BO-5, 6 = BO-6, 7 = BO-7, 8 = AO-1, 9 = AO-2, 10 = AO-3
MV	66	AI1_CFG	Select predefined AI1 logic		Write	1 = None, 2 = NSB, 3 = OVR, 4 = FILTER, 5 = SERVICE, 6 = FANSTATUS
MV	67	AI2_CFG	Select predefined AI2 logic		Write	1 = None, 2 = NSB, 3 = OVR, 4 = FILTER, 5 = SERVICE, 6 = FANSTATUS
MV	68	BO_DEHU	Select dehumidification output		Write	1 = None, 2 = BO-2, 3 = BO-3, 4 = BO-4, 5 = BO-5, 6 = BO-6, 7 = BO-7
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 = FanLock, 3 = SupplyFrozen, 4 = Service, 5 = Filter, 6 = Rem NSB Ovr
MV	127	Preset	Select application		Write	1 = RT 2STG, 2 = RT ECON, 3 = HP 2STG, 4 = RT IAQ, 5 = RT MOD, 6 = HP DEH, 7 = HUM-DEH, 8 = RT 3STG, 9 = RT 4STG, 10 = HP 3STG
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	LockTemp	Main Display		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
MV	205	System_Unit	System/Database Unit		Write	1 = Metric, 2 = Imperial
MV	221	Radar_Status	Radar_status		Write	1 = Disable, 2 = Enable
MV	223	Detection_range	Detection_range		Write	Range: 1_m to 7_m
MV	235	Radar_Freq	pll_frequency_word		Write	Range: Channel 1 to 8
MV	244	Sensitivity	duty_cycle_repetition_r		Write	1 = Low, 2 = Medium, 3 = High, 4 = very-high
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
LO	10	Room_RH	Room RH control loop	%	Read
LO	11	Supply_RH_HL	Supply RH hi limit control loop	%	Read
LO	12	PidMAT	Mix air T control for economizer	%	Read
SCH	1	OccSchedule	Occupancy schedule		Write

Object ID lookup: Strato Automation OPENSTAT OS537 thermostat, RTU firmware point IDs by name

BO1BO_1
BO2BO_2
BO3BO_3
BO4BO_4
BO5BO_5
BO6BO_6
BO7BO_7
AO1AO_1
AO2AO_2
AO3AO_3
AI1AI_1
AI2AI_2
AI3AI_3
AI4AI_4
AI5AI_5
AI6RoomT
AI7RoomRH
AI8RoomCO2
BI1Motion
AV1RoomTSP
AV6HTG_Dem
AV7CLG_Dem
AV9Eff_T
AV16SATemp
AV19SATFRSP_Set
AV21ECM_min_Set
AV24Fan_MinOn_Time
AV27OvrTime_Set
AV29OATemp
AV31CO2_SP_Set
AV33MinCLSP
AV34MaxHTSP
AV35OccCLSP
AV36OccHTSP
AV37SP_DB_Set
AV38Unoc_CL_Set
AV39Unoc_HT_Set
AV40STBCoolOffset
AV41STBHeatOffset
AV42EffCLSP
AV43EffHTSP
AV50RT_Cal
AV51Eff_RH
AV52HUM_SP
AV53SAH
AV54SAH_HL_Set
AV55DEH_SP
AV56SAT_HL_Set
AV57SAT_CTR_Set
AV58SAT_LL_Set
AV59Eff_SAT
AV60ComprLockout
AV65EconoMin_Pos
AV66EconoMaxCO2Pos
AV67OATheatOutAuth
AV68OATeconOutAuth
AV75OAH
AV76OAE
AV77EnthSP
AV78MATSP
AV79MAT
BV2OVRSTAT
BV3Mot_Det
BV4AutogenDesc
BV5Occ_Sch
BV7Freeze_Status
BV8Free_CL_Status
BV21EnthalpyAuth
MV1CFGSens
MV2AI_RS
MV3MODE
MV4FAN
MV5Eff_Occ
MV6Occ_Cmd
MV7CFG_Y1
MV8CFG_Y2
MV9CFG_Y3
MV10CFG_Y4
MV16CFG_W1
MV17CFG_W2
MV18CFG_W3
MV19CFG_W4
MV23CFG_FAN
MV27AI_OAT
MV28AI_SAT
MV30AO_ECO
MV32CFG_EXH
MV44BI_PIR
MV45BI_SCH_Input
MV48BO_HUM
MV49AO_HUM
MV52AI_RH
MV54AI_SRH
MV55AIC_SRH
MV57OAH_Loc
MV58MAT_Loc
MV62CFGSetp
MV65BO_OCC
MV66AI1_CFG
MV67AI2_CFG
MV68BO_DEHU
MV70PB
MV100HELP_mess
MV127Preset
MV200Brightness
MV201BgColor
MV202LockTemp
MV203Language
MV204Display_Units
MV205System_Unit
MV221Radar_Status
MV223Detection_range
MV235Radar_Freq
MV244Sensitivity
LO1RoomT_Cool
LO2RoomT_heat
LO6SupplyTemp
LO7SupplyTempHL
LO8SupplyTempLL
LO10Room_RH
LO11Supply_RH_HL
LO12PidMAT
SCH1OccSchedule

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.
AI-8 RoomCO2 exists only on C models such as the OS537MHC.
BO and AO descriptions are generated from the MSV-127 preset when BV-4 is On.
Multistate state numbers follow the order the states are printed, starting at 1; MSV-223 and MSV-235 print a range.
AV-35 and AV-36 (occupied setpoints) are tagged Status in this guide.

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 OS537 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 OS537 thermostat, RTU firmware

How many BACnet points does the Strato Automation OPENSTAT OS537 thermostat, RTU firmware have?

This list has 123 BACnet objects: 8 analog inputs, 3 analog outputs, 42 analog values, 1 binary input, 7 binary outputs, 7 binary values, 8 loops, 1 schedule, 46 multi-state values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Strato Automation OPENSTAT OS537 thermostat, RTU firmware BACnet points are writable?

84 of the 123 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 OS537 thermostat, RTU firmware BACnet documentation?

The source is OS537 (Universal Firmware) User Guide, Rooftop Unit (RTU) - BACnet Objects, revision July 2026 rev 0, published free by Strato Automation at https://stratoautomation.com/wp-content/uploads/2025/08/OS537-User-Guide-July-2026-rev-0.pdf.

What are the minimum BACnet points to integrate the Strato Automation OPENSTAT OS537 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); AI 7 RoomRH (Room humidity); AV 6 HTG_Dem (Heating demand, %); AV 7 CLG_Dem (Cooling demand, %); AV 16 SATemp (Supply air temperature); MV 100 HELP_mess (Alarm / help message).

How do I enable BMS control of the Strato Automation OPENSTAT OS537 thermostat, RTU firmware?

Occupancy can be written to BV-5; MSV-45 selects the schedule source and MSV-6 forces local, occupied or unoccupied.

Can the BMS supply sensor values to the Strato Automation OPENSTAT OS537 thermostat, RTU firmware?

Sensor location MSVs (MSV-2, 27, 28, 52, 54, 57, 58) can be set to 'External' to take the value from the network.

How do I check these points on the real OPENSTAT OS537 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

Source: OS537 (Universal Firmware) User Guide, Rooftop Unit (RTU) - BACnet Objects · rev. July 2026 rev 0. Object names, instances and units are reproduced as published; descriptions are our own.