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Laboratory room airflow and pressure controller · BACnet points list

Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation) BACnet points list

Updated 7 November 2026

Short answer

Application 6763 holds a set airflow offset between supply and general exhaust to pressurize a lab room, and also handles ventilation and room temperature, on a Siemens BACnet PRC-OAVS controller over BACnet MS/TP. Both dampers use floating actuators. Reheat can be driven 0-10 V or floating, and three heating modes are available: reheat from the room loop, reheat from a discharge loop, or discharge loop plus a 0-10 V perimeter radiation valve. Two offset setpoints (PRS1/PRS2) can be switched, and the room can be run without a supply box or without an exhaust box.

This page lists 125 BACnet objects for the Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation) — 115 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Siemens’s own free documentation, linked below.

Manufacturer
Siemens
Model
BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation)
Equipment
Laboratory room airflow and pressure controller
Equipment type
Thermostats, sensors & meters
BACnet objects
125 (115 writable)
Transport
BACnet MS/TP
Firmware
Not stated
Also known as
Application 6763, App 6763, 570-810P, PRC-OAVS, Siemens Pressurized Room Controller, Siemens lab room pressurization
Source document
BACnet PRC-OAVS with Slow Floating Damper Control, AOV or Floating Reheat, Optional Discharge Control and Optional AOV Perimeter Radiation, Application 6763, Application Note · 140-1059 · rev. 2014-10-15
Download CSV 125 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 Siemens’s current documentation and the live device before use. Not official Siemens information. Terms of use.

BMS integration notes: Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation)

Integration in brief

Address the controller on the BACnet MS/TP trunk and calibrate the airflow modules. The BMS commands day/night with DAY.NGT (BO 29), sets the day setpoints and the airflow offset, keeps OTHER SUP / OTHER EXH current where unmeasured airflows exist, and reads room temperature, supply and exhaust airflow, the airflow difference and the ventilation and pressurization 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.

ObjectNameWhyAccess
BO 29DAY.NGTDAY = occupied, NIGHT = unoccupiedCommand
AO 6DAY CLG STPTOccupied cooling setpoint, °FCommand
AO 7DAY HTG STPTOccupied heating setpoint, °FCommand
AO 88VOL DIF STPTExhaust-minus-supply airflow offset, cfmCommand
AO 4ROOM TEMPSpace temperatureCommand
AI 35SUP VOLMeasured supply airflow, cfmRead
AI 30GEX VOLMeasured general exhaust airflow, cfmRead
AI 62VOL DIFFRNCExhaust minus supply airflow, cfmRead
BO 22VOL DIF ALMRoom pressurization (offset) alarmCommand
BO 68VENT ALMVentilation alarmCommand

Enable & remote start

Day/night is DAY.NGT (BO 29). With a wall switch on DI 2 and WALL SWITCH (BO 18) = YES the switch sets it; on a network the field panel or BMS commands it. NGT OVRD (BO 21) shows a temporary override from the room unit button. PRESS STATE (BI 51) picks which offset setpoint (PRS1DIF or PRS2DIF STPT) is active.

Sensors & values from the BMS

OTHER SUP (AO 61) and OTHER EXH (AO 89) take airflows from equipment not wired to this controller; the guide suggests updating them over the network (PPCL) when they change. NET ALM CMD (BO 23) lets the field panel switch the local alarm output.

Network setup

Watch out for

Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation) 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.

125 of 125 shown
Type
Access
Show
Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation) BACnet Points List
DescriptionStates
AO1CTLR ADDRESSController MS/TP addressCommand
AO2APPLICATIONApplication number running in the controllerCommand
BO3TRACK MODEFlow tracking mode: supply tracks exhaust or exhaust tracks supplyCommand0=ETS, 1=STE
AOmin4ROOM TEMPRoom temperature from the room unit°FCommand
BO5HEAT.COOLCurrent heating/cooling modeCommand0=COOL, 1=HEAT
AOmin6DAY CLG STPTDay (occupied) cooling setpoint°FCommand
AOmin7DAY HTG STPTDay (occupied) heating setpoint°FCommand
AO8NGT CLG STPTNight (unoccupied) cooling setpoint°FCommand
AO9NGT HTG STPTNight (unoccupied) heating setpoint°FCommand
BO10AZM DO8Autozero solenoid output (DO 8)Command0=OFF, 1=ON
AO11RM STPT MINLowest setpoint allowed from the room unit°FCommand
AO12RM STPT MAXHighest setpoint allowed from the room unit°FCommand
AO13RM STPT DIALSetpoint from the room unit dial or keypad°FCommand
BO14STPT DIALUse the room unit setpoint dialCommand0=NO, 1=YES
AO15DISCH P GAINDischarge air loop proportional gainCommand
AO16FLOW STARTHeating loop % where airflow starts to rise%Command
AO17FLOW ENDHeating loop % where airflow reaches maximum%Command
BO18WALL SWITCHWall switch connected to DI 2Command0=NO, 1=YES
BO19DI OVRD SWRoom unit night override buttonCommand0=OFF, 1=ON
AO20OVRD TIMENight override durationhCommand
BO21NGT OVRDNight override statusCommand0=DAY, 1=NIGHT
BOmin22VOL DIF ALMRoom pressurization (volume differential) alarmCommand0=OFF, 1=ON
BO23NET ALM CMDAlarm command from the networkCommand0=OFF, 1=ON
BI24DI 2Digital input 2Read0=OFF, 1=ON
AI25AI 4Spare analog input 4%Read
AO26GEX P GAINGeneral exhaust flow loop proportional gainCommand
AO27CLG I GAINCooling loop integral gainCommand
AO28STAT SUPVDigital room unit loss-of-communication supervision (additive)Command
BOmin29DAY.NGTDay/night (occupancy) modeCommand0=DAY, 1=NIGHT
AImin30GEX VOLMeasured general exhaust airflowcfmRead
AO31CLG FLO MINMinimum supply airflow in coolingcfmCommand
AO32CLG FLO MAXMaximum supply airflow in coolingcfmCommand
AO33HTG FLO MINMinimum supply airflow in heatingcfmCommand
AO34HTG FLO MAXMaximum supply airflow in heatingcfmCommand
AImin35SUP VOLMeasured supply airflowcfmRead
AO36SUP FLO COEFSupply airflow pickup coefficientCommand
AO37REHEAT CMDReheat valve command%Command
AO38RAD VALV CMDPerimeter radiation valve command%Command
AO39DIS TEMP MAXMaximum discharge air temperature setpoint°FCommand
AO40AVS FAILMODEValve action if an air velocity sensor fails (code)Command
BO41DO 1Digital output 1Command0=OFF, 1=ON
BO42DO 2Digital output 2Command0=OFF, 1=ON
BO43DO 3Digital output 3Command0=OFF, 1=ON
BO44DO 4Digital output 4Command0=OFF, 1=ON
BO45DO 5Digital output 5Command0=OFF, 1=ON
BO46DO 6Digital output 6Command0=OFF, 1=ON
BO47ALARM DO7Local alarm output on DO 7Command0=OFF, 1=ON
AO48SUP DMP CMDSupply damper command%Command
AO49SUP DMP POSSupply damper position (calculated)%Command
AO50REHEAT STARTHeating loop % where reheat starts%Command
BI51PRESS STATEActive pressurization state (PRS1 or PRS2)Read0=PRS1, 1=PRS2
AO52GEX DMP CMDGeneral exhaust damper command%Command
AO53GEX DMP POSGeneral exhaust damper position (calculated)%Command
AO54GEX FLO COEFGeneral exhaust airflow pickup coefficientCommand
AO55AOV3Analog output 3 (0-10 V)VCommand
AO56PRS1DIF STPTAirflow offset setpoint for pressure state 1cfmCommand
AO57PRS2DIF STPTAirflow offset setpoint for pressure state 2cfmCommand
AO58REHEAT ENDHeating loop % where reheat is at full output%Command
AI59TOTL SUPPLYTotal room supply airflowcfmRead
AO60GEXDUCT AREAGeneral exhaust duct areaft²Command
AO61OTHER SUPFixed supply from other sources in the roomcfmCommand
AImin62VOL DIFFRNCExhaust minus supply airflowcfmRead
AO63CLG P GAINCooling loop proportional gainCommand
AI64DIS TEMP AI5Discharge air temperature (AI 5)°FRead
AO65DIS TEMP MINMinimum discharge air temperature setpoint°FCommand
AO66TEMP OFFSETRoom temperature calibration offset°FCommand
AO67HTG P GAINHeating loop proportional gainCommand
BOmin68VENT ALMVentilation alarmCommand0=OFF, 1=ON
AO69DISCH STPTDischarge air setpoint, reset by the room loop°FCommand
AI70AI 3Spare analog input 3%Read
AO71SUP P GAINSupply flow loop proportional gainCommand
AO72HTG I GAINHeating loop integral gainCommand
BO73PPCL STATEPPCL program loaded or emptyCommand0=EMPTY, 1=LOADED
AO74AOV1Analog output 1 (0-10 V)VCommand
AO75AOV2Analog output 2 (0-10 V)VCommand
AO76TEMP CTL VOLSupply airflow wanted for temperature controlcfmCommand
AO77RAD STARTHeating loop % where perimeter radiation starts%Command
AO78CTL TEMPTemperature the controller is controlling to°FCommand
AO79CLG LOOPOUTCooling loop output%Command
AO80HTG LOOPOUTHeating loop output%Command
AI81TOTL EXHAUSTTotal room exhaust airflowcfmRead
BO82TRACK METHODTracking flow or setpointCommand0=STPT, 1=FLOW
AO83RAD ENDHeating loop % where perimeter radiation is full on%Command
AO85GEX STPTGeneral exhaust airflow setpointcfmCommand
AO86GEX MINMinimum general exhaust airflowcfmCommand
AO87GEX MAXMaximum general exhaust airflowcfmCommand
AOmin88VOL DIF STPTActive volume differential setpointcfmCommand
AO89OTHER EXHFixed exhaust from other sources in the roomcfmCommand
AO90SWITCH DBANDTemperature deadband for heat/cool switchover°FCommand
AO91HC.ENDISHeat/cool enable: 1 heat, 2 cool, 3 bothCommand
AO92CTL STPTActive control setpoint°FCommand
AO93SUP STPTSupply airflow setpointcfmCommand
BO94CAL AIRStart air velocity sensor calibrationCommand0=NO, 1=YES
AO95CAL SETUPCalibration setup codeCommand
AO96CAL TIMERHours between automatic calibrationshCommand
AO97SUPDUCT AREASupply duct areaft²Command
AO98LOOP TIMEControl loop intervalsCommand
AO99ERROR STATUSController error status codeCommand
AO101MTR3 TIMINGMotor 3 full-stroke timesCommand
AO102MTR3 ROT ANGFloating reheat actuator rotation angleCommand
AO103SWITCH TIMEMinimum time before heat/cool switchoverminCommand
BO104CAL MODULECalibration module installedCommand0=NO, 1=YES
AO105AOV1 OPENAOV1 voltage at openVCommand
AO106AOV1 CLOSEAOV1 voltage at closedVCommand
AO107AOV2 OPENAOV2 voltage at openVCommand
AO108AOV2 CLOSEAOV2 voltage at closedVCommand
AO109MTR1 ROT ANGMotor 1 rotation angleCommand
AO110MTR2 ROT ANGMotor 2 rotation angleCommand
AO111SWITCH LIMITLoop output below which mode may switch%Command
AO112MTR1 TIMINGMotor 1 full-stroke timesCommand
AO113MTR2 TIMINGMotor 2 full-stroke timesCommand
AO114FAIL LIMITFlow error that triggers the change to flow trackingcfmCommand
AO115MODHTG FLOMinimum supply air velocity before reheat may modulatefpmCommand
AO116RM CO2Room CO2ppmCommand
AO117RM RHRoom relative humidity%Command
AO118DIF ALM DELDelay before the volume differential alarmsCommand
AO119P1 V ALM LVLVentilation alarm airflow level, pressure state 1cfmCommand
AO120P2 V ALM LVLVentilation alarm airflow level, pressure state 2cfmCommand
AO121FAIL TIMETime the flow error must last before flow trackingsCommand
AO122ALARM ENASelects which alarms switch DO 7 (code)Command
AO123MTR SETUPMotor enable/reverse setup (additive code)Command
AO124DO DIR.REVDigital output direction reverse (additive code)Command
AO125VENT ALM DELDelay before the ventilation alarmsCommand
AO126DIF ALM DBDDeadband around the volume differential setpoint for alarmcfmCommand
AO127DISCH I GAINDischarge air loop integral gainCommand
Object ID lookup: Siemens PRC-OAVS Floating Damper 6763 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 BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation) 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 Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation)

How many BACnet points does the Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation) have?

This list has 125 BACnet objects: 8 analog inputs, 93 analog outputs, 2 binary inputs, 22 binary outputs. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation) BACnet points are writable?

115 of the 125 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 Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation) BACnet documentation?

The source is BACnet PRC-OAVS with Slow Floating Damper Control, AOV or Floating Reheat, Optional Discharge Control and Optional AOV Perimeter Radiation, Application 6763, Application Note (140-1059), revision 2014-10-15, published free by Siemens at https://sid.siemens.com/api/khub/documents/v73Q6Z9Hc6wkGE1u6jCRpQ/content.

What are the minimum BACnet points to integrate the Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation)?

Start with BO 29 DAY.NGT (DAY = occupied, NIGHT = unoccupied); AO 6 DAY CLG STPT (Occupied cooling setpoint, °F); AO 7 DAY HTG STPT (Occupied heating setpoint, °F); AO 88 VOL DIF STPT (Exhaust-minus-supply airflow offset, cfm); AO 4 ROOM TEMP (Space temperature); AI 35 SUP VOL (Measured supply airflow, cfm); AI 30 GEX VOL (Measured general exhaust airflow, cfm); AI 62 VOL DIFFRNC (Exhaust minus supply airflow, cfm); BO 22 VOL DIF ALM (Room pressurization (offset) alarm); BO 68 VENT ALM (Ventilation alarm).

How do I enable BMS control of the Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation)?

Day/night is DAY.NGT (BO 29). With a wall switch on DI 2 and WALL SWITCH (BO 18) = YES the switch sets it; on a network the field panel or BMS commands it. NGT OVRD (BO 21) shows a temporary override from the room unit button. PRESS STATE (BI 51) picks which offset setpoint (PRS1DIF or PRS2DIF STPT) is active.

Can the BMS supply sensor values to the Siemens BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation)?

OTHER SUP (AO 61) and OTHER EXH (AO 89) take airflows from equipment not wired to this controller; the guide suggests updating them over the network (PPCL) when they change. NET ALM CMD (BO 23) lets the field panel switch the local alarm output.

How do I check these points on the real BACnet PRC-OAVS Room Pressurization - Application 6763 (Floating Dampers, AOV or Floating Reheat, Optional Perimeter Radiation)?

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 Siemens BACnet points lists

Source: BACnet PRC-OAVS with Slow Floating Damper Control, AOV or Floating Reheat, Optional Discharge Control and Optional AOV Perimeter Radiation, Application 6763, Application Note · 140-1059 · rev. 2014-10-15. Object names, instances and units are reproduced as published; descriptions are our own.