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Dual duct constant volume terminal unit controller · BACnet points list

Siemens BACnet PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat) BACnet points list

Updated 4 November 2026

Short answer

Application 6565 controls a dual duct box on a Siemens BACnet PTEC controller over BACnet MS/TP, holding a constant total airflow: OCC FLOW when occupied and a lower UNOCC FLOW when unoccupied. In cooling the cold duct damper holds room temperature and the hot duct damper makes up the volume; in heating the hot duct damper holds the volume. An optional hot water valve or up to three electric stages add heat.

This page lists 101 BACnet objects for the Siemens BACnet PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat) — 86 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 PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat)
Equipment
Dual duct constant volume terminal unit controller
Equipment type
VAV boxes & fan coils
BACnet objects
101 (86 writable)
Transport
BACnet MS/TP
Firmware
Newer than revision Bx40
Also known as
PTEC 6565, Application 6565, App 6565, 550-497P, 540-507N, Siemens dual duct constant volume
Source document
BACnet PTEC Controller Dual Duct with 2 AVS - Constant Volume with Two Inlet Sensors and Optional Reheat, Application 6565, Application Note · 140-0995 · rev. 2015-04-29
Download CSV 101 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 PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat)

Integration in brief

Set the MS/TP address and the application number, then release the box to application control. The BMS commands occupancy with OCC.UNOCC (BO 29) and the occupied setpoints, and reads room temperature, the two duct airflows and the error 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.

ObjectNameWhyAccess
BO 29OCC.UNOCCOCC = occupied, UNOCC = unoccupiedCommand
AO 6OCC CLG STPTOccupied cooling setpoint, °FCommand
AO 7OCC HTG STPTOccupied heating setpoint, °FCommand
AO 32OCC FLOWOccupied total airflow setpoint, cfmCommand
BO 5HEAT.COOLCurrent mode: HEAT or COOLCommand
AI 4ROOM TEMPSpace temperatureRead
AI 35CLG VOLUMECold duct airflow, cfmRead
AI 30HTG VOLUMEHot duct airflow, cfmRead
AO 99ERROR STATUSController error codeCommand

Enable & remote start

Occupancy is OCC.UNOCC (BO 29). With a wall switch on DI 2 and WALL SWITCH (BO 18) = YES, the switch sets it; standalone with no switch the controller stays occupied; on a network the field panel or BMS commands OCC.UNOCC. UNOCC OVRD (BO 21) shows a temporary occupied override from the room unit button.

Network setup

Watch out for

Siemens BACnet PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat) 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.

101 of 101 shown
Type
Access
Show
Siemens BACnet PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat) BACnet Points List
DescriptionStates
AO1CTLR ADDRESSController MS/TP addressCommand
AO2APPLICATIONApplication number running in the controllerCommand
AImin4ROOM TEMPRoom temperature from the room unit°FRead
BOmin5HEAT.COOLCurrent heating/cooling modeCommand0=COOL, 1=HEAT
AOmin6OCC CLG STPTOccupied cooling setpoint°FCommand
AOmin7OCC HTG STPTOccupied heating setpoint°FCommand
AO8UOC CLG STPTUnoccupied cooling setpoint°FCommand
AO9UOC HTG STPTUnoccupied heating setpoint°FCommand
AO11RM STPT MINLowest setpoint allowed from the room unit°FCommand
AO12RM STPT MAXHighest setpoint allowed from the room unit°FCommand
AI13RM STPT DIALSetpoint from the room unit dial or keypad°FRead
BO14STPT DIALUse the room unit setpoint dialCommand0=NO, 1=YES
AI15AUX TEMP AI5Auxiliary temperature input on AI 5°FRead
BO18WALL SWITCHWall switch connected to DI 2Command0=NO, 1=YES
BI19DI OVRD SWRoom unit night override buttonRead0=OFF, 1=ON
AO20OVRD TIMENight override durationhCommand
BO21UNOCC OVRDUnoccupied override statusCommand0=OCC, 1=UNOCC
BI24DI 2Digital input 2Read0=OFF, 1=ON
BI25DI 3Digital input 3Read0=OFF, 1=ON
AO26HTGFLO PGAINHot duct flow loop proportional gainCommand
AO27HTGFLO IGAINHot duct flow loop integral gainCommand
AO28HTGFLO DGAINHot duct flow loop derivative gainCommand
BOmin29OCC.UNOCCOccupied/unoccupied modeCommand0=OCC, 1=UNOCC
AImin30HTG VOLUMEMeasured hot duct airflowcfmRead
AO31UNOCC FLOWAirflow setpoint when unoccupiedcfmCommand
AOmin32OCC FLOWAirflow setpoint when occupiedcfmCommand
AImin35CLG VOLUMEMeasured cold duct airflowcfmRead
AO36CLG FLO COEFCold duct airflow correction coefficientCommand
AO37VALVE COMDReheat valve command%Command
AO38VALVE POSReheat valve position (calculated)%Command
AO39MTR3 TIMINGMotor 3 full-stroke timesCommand
BO40FAIL MODEDamper action if the airflow sensor failsCommand0=OPEN, 1=CLOSE
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
BO47DO 7Digital output 7Command0=OFF, 1=ON
AO48CLG DMP CMDCold duct damper command%Command
AO49CLG DMP POSCold duct damper position%Command
BO50DO 8Digital output 8Command0=OFF, 1=ON
AO51MTR1 TIMINGMotor 1 full-stroke timesCommand
AO52HTG DMP CMDHot duct damper command%Command
AO53HTG DMP POSHot duct damper position%Command
AO54HTG FLO COEFHot duct airflow correction coefficientCommand
AO55MTR2 TIMINGMotor 2 full-stroke timesCommand
AO56DPR1 ROT ANGDamper 1 rotation angleCommand
AO57DPR2 ROT ANGDamper 2 rotation angleCommand
AO58MTR SETUPMotor enable/reverse setup (additive code)Command
AO59DO DIR. REVDigital output direction reverse (additive code)Command
AO60HTGDUCT AREAHot duct inlet areaft²Command
AO63CLG P GAINCooling loop proportional gainCommand
AO64CLG I GAINCooling loop integral gainCommand
AO65CLG D GAINCooling loop derivative gainCommand
AO66CLG BIASCooling loop bias%Command
AO67HTG P GAINHeating loop proportional gainCommand
AO68HTG I GAINHeating loop integral gainCommand
AO69HTG D GAINHeating loop derivative gainCommand
AO70HTG BIASHeating loop bias%Command
AO71CLGFLO PGAINCold duct flow loop proportional gainCommand
AO72CLGFLO IGAINCold duct flow loop integral gainCommand
AO73CLGFLO DGAINCold duct flow loop derivative gainCommand
AO74HTG FLOWHot duct airflow, percent%Command
AO75CLG FLOWCold duct airflow, percent%Command
AO78CTL TEMPTemperature the controller is controlling to°FCommand
AO79CLG LOOPOUTCooling loop output%Command
AO80HTG LOOPOUTHeating loop output%Command
AO81AVG HEAT OUTAverage auxiliary heat output%Command
BO82AUX HTG USEDAuxiliary heat installedCommand0=NO, 1=YES
BO83AUX HTG TYPEAuxiliary heat type: electric or hot waterCommand0=HW, 1=ELEC
BO84DMPR STATUSDamper calibration statusCommand0=CAL, 1=RECAL
AO85HTG FLO STPTHot duct airflow setpoint, percent%Command
AO86SWITCH TIMEMinimum time before heat/cool switchoverminCommand
BO87CAL MODULECalibration module installedCommand0=NO, 1=YES
AO88STAGE COUNTNumber of electric heat stagesCommand
AO89STAGE TIMEElectric heat cycle timeminCommand
AO90SWITCH DBANDTemperature deadband for heat/cool switchover°FCommand
AO91CLG FLOW MINMinimum airflow in coolingcfmCommand
AO92CTL STPTActive control setpoint°FCommand
AO93CLG FLO STPTCold duct airflow setpoint, percent%Command
BO94CAL AIRStart air velocity sensor calibrationCommand0=NO, 1=YES
AO95CAL SETUPCalibration setup codeCommand
AO96CAL TIMERHours between automatic calibrationshCommand
AO97CLGDUCT AREACold duct inlet areaft²Command
AO98LOOP TIMEControl loop intervalsCommand
AOmin99ERROR STATUSController error status codeCommand
AO102AOV 1Analog output 1 (0-10 V)VCommand
AO103AOV 2Analog output 2 (0-10 V)VCommand
AO104AOV 3Analog output 3 (0-10 V)VCommand
AI105AI 3Spare analog input 3%Read
AI106AI 4Spare analog input 4%Read
AO107RMTMP OFFSETRoom temperature calibration offset°FCommand
BI108DI 4Digital input 4Read0=OFF, 1=ON
BI109DI 5Digital input 5Read0=OFF, 1=ON
BI110DI 6Digital input 6Read0=OFF, 1=ON
AO123AI 5 OFFSETCalibration offset for the AI 5 temperature input°FCommand
AO124STAT SUPVDigital room unit loss-of-communication supervision (additive)Command
AI125RM CO2Room CO2ppmRead
AI126RM RHRoom relative humidity%Read
BO127PPCL STATEPPCL program loaded or emptyCommand0=EMPTY, 1=LOADED
Object ID lookup: Siemens PTEC Dual Duct Constant Volume 6565 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 PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat) 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 PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat)

How many BACnet points does the Siemens BACnet PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat) have?

This list has 101 BACnet objects: 9 analog inputs, 66 analog outputs, 6 binary inputs, 20 binary outputs. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Siemens BACnet PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat) BACnet points are writable?

86 of the 101 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 PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat) BACnet documentation?

The source is BACnet PTEC Controller Dual Duct with 2 AVS - Constant Volume with Two Inlet Sensors and Optional Reheat, Application 6565, Application Note (140-0995), revision 2015-04-29, published free by Siemens at https://sid.siemens.com/api/khub/documents/XS_5yvmQo~5DZ5gkp1LX3w/content.

What are the minimum BACnet points to integrate the Siemens BACnet PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat)?

Start with BO 29 OCC.UNOCC (OCC = occupied, UNOCC = unoccupied); AO 6 OCC CLG STPT (Occupied cooling setpoint, °F); AO 7 OCC HTG STPT (Occupied heating setpoint, °F); AO 32 OCC FLOW (Occupied total airflow setpoint, cfm); BO 5 HEAT.COOL (Current mode: HEAT or COOL); AI 4 ROOM TEMP (Space temperature); AI 35 CLG VOLUME (Cold duct airflow, cfm); AI 30 HTG VOLUME (Hot duct airflow, cfm); AO 99 ERROR STATUS (Controller error code).

How do I enable BMS control of the Siemens BACnet PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat)?

Occupancy is OCC.UNOCC (BO 29). With a wall switch on DI 2 and WALL SWITCH (BO 18) = YES, the switch sets it; standalone with no switch the controller stays occupied; on a network the field panel or BMS commands OCC.UNOCC. UNOCC OVRD (BO 21) shows a temporary occupied override from the room unit button.

How do I check these points on the real BACnet PTEC Dual Duct Controller - Application 6565 (2 Air Velocity Sensors, Constant Volume, Optional Reheat)?

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 PTEC Controller Dual Duct with 2 AVS - Constant Volume with Two Inlet Sensors and Optional Reheat, Application 6565, Application Note · 140-0995 · rev. 2015-04-29. Object names, instances and units are reproduced as published; descriptions are our own.