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VRF outdoor unit monitoring via BACnet gateway · BACnet points list

CoolAutomation CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P BACnet points list

Updated 11 November 2026

Short answer

With PRO functionality, CoolAutomation gateways publish service data from each Daikin VRV outdoor unit over BACnet: ambient, suction, evaporating, condensing and discharge temperatures, EV openings, CT and inverter currents, fan step, compressor, heater and valve states, and protection-control flags such as retries and stepping-down or drooping control (52 objects for this series group). Monitoring only.

This page lists 52 BACnet objects for the CoolAutomation CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P — 0 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from CoolAutomation’s own free documentation, linked below.

Manufacturer
CoolAutomation
Model
CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P
Equipment
VRF outdoor unit monitoring via BACnet gateway
Equipment type
VRF & split air conditioners
BACnet objects
52 (0 writable)
Transport
BACnet IP, BACnet MS/TP
Firmware
Not stated
Default device instance
64
Also known as
Daikin VRV BACnet, CoolMasterNet Daikin, Daikin outdoor unit BACnet, VRV4S1, VRV4S2, VRV-3S, VRV-3P
Brands covered
Daikin
Source document
BACnet Integration Guidelines - CoolMasterNet, CooLinkNet, CooLinkHub, CooLinkBridge · rev. Rev 0.5, 2019-04-29
Download CSV 52 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 CoolAutomation’s current documentation and the live device before use. Not official CoolAutomation information. Terms of use.

BMS integration notes: CoolAutomation CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P

Integration in brief

Use these objects to monitor Daikin outdoor equipment only; control stays on the CoolMasterNet indoor-unit objects. Map the outdoor block's VA and trend the key temperatures, compressor data and error state.

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
BI 278Comp1InvInverter compressor runningRead
BI 296DfrstDefrost activeRead
IV 258AmbTAmbient temperature, °CRead
IV 260EvTEvaporating temperature, °CRead
IV 261CndTCondensing temperature, °CRead
PIV 262InvRSInverter speed, rpsRead
PIV 276InvCurInverter current, ARead
BI 289ErrStateUnit error stateRead

Enable & remote start

BACnet must be enabled on the gateway; these objects belong to its PRO (service data) functionality.

Network setup

Watch out for

CoolAutomation CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P 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.

52 of 52 shown
Type
Binary
Show
CoolAutomation CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P BACnet Points List
DescriptionStates
PIV256AirNetAirNet Addr.Read
PIV257HPHPhpRead
IVmin258AmbTAmbient temperature°CRead
IV259SuctTSuction Temperature°CRead
IVmin260EvTEvaporating Temperature°CRead
IVmin261CndTCondensing Temperature°CRead
PIVmin262InvRSInverter Revolution SpeedrpsRead
PIV263EVOp1EV opening 1pulsesRead
PIV264EVOp2EV opening 2pulsesRead
PIV265CTSTD1CT1 (STD1)ARead
PIV266CTSTD2CT2 (STD2)ARead
PIV267FanStpFan stepRead
IV268CilTR4T :Coil temp.°CRead
IV269ScCilExtTSubcooling Coil exit Temp.°CRead
PIV270DschTInvDisch. temp.(INV)°CRead
PIV271DschTStd1Disch. temp.(STD1)°CRead
PIV272DschTStd2Disch. temp.(STD2)°CRead
IV273AccEntrTAccumulator Entrance Temp.°CRead
IV274RcvrLiqTReceiver Liquid Temp.°CRead
PIV275InvTInverter temp.°CRead
PIVmin276InvCurInverter currentARead
PIV277InvFanCurINV FAN currentARead
BImin278Comp1InvCompressor1(INV)Read
BI279Comp2Std1Compressor2(STD1)Read
BI280Comp3Std2Compressor3(STD2)Read
BI281OiRtrnOil returnRead
BI282HotGasHot GasRead
BI283CcH1CH1:Crankcase HeaterRead
BI284CcH2CH2:Crankcase HeaterRead
BI285CcH3CH3:Crankcase HeaterRead
BI286SoftStrtSoft startRead
BI287ResrtStbyRestart stand-byRead
BI288MulOiMulti oilRead
BImin289ErrStateUnit Error statRead
BI290EnrgyCutOutpEnergy cut outputRead
BI291HiPRtryHigh pressure retryRead
BI292LoPRtryLow pressure retryRead
BI293DischPipRtryDisch. pipe retryRead
BI2944WayVlv4 way valveRead
BI295InjctInjectionRead
BImin296DfrstDefrostRead
BI297HiPStpDnCtlH.P. stepping down cntlRead
BI298LoPStpDnCtlL.P. stepping down cntlRead
BI299DmndStpDnCtlDemand stepping down cntlRead
BI300InvRtryINV retryRead
BI301InvDschStpDnCtlINV Disch. stepping down cntlRead
BI302InvOCStpDnCtlINV OC stepping down cntlRead
BI303InvFinStpDnCtlINV Fin stepping down cntlRead
BI304Std1DschStpDnCtlSTD1 Disch. stepping down cntlRead
BI305Std1OCStpDnCtlSTD1 OC stepping down cntlRead
BI306Std2DschStpDnCtlSTD2 Disch. stepping down cntlRead
BI307Std2OCStpDnCtlSTD2 OC stepping down cntlRead
Object ID lookup: CoolAutomation Daikin ODU VRV4S1/S2/3S/3P 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 CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P 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 CoolAutomation CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P

How many BACnet points does the CoolAutomation CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P have?

This list has 52 BACnet objects: 30 binary inputs, 8 integer values, 14 positive integer values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which CoolAutomation CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P BACnet points are writable?

None of the listed objects are marked writable in the source documentation. The source has no read/write column, so this is inferred from object type.

Where is the official CoolAutomation CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P BACnet documentation?

The source is BACnet Integration Guidelines - CoolMasterNet, CooLinkNet, CooLinkHub, CooLinkBridge, revision Rev 0.5, 2019-04-29, published free by CoolAutomation at https://coolautomation.com/Lib/doc/CoolMasterNet/manual/CoolMasterNet-BACnet-guidelines.pdf.

What are the minimum BACnet points to integrate the CoolAutomation CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P?

Start with BI 278 Comp1Inv (Inverter compressor running); BI 296 Dfrst (Defrost active); IV 258 AmbT (Ambient temperature, °C); IV 260 EvT (Evaporating temperature, °C); IV 261 CndT (Condensing temperature, °C); PIV 262 InvRS (Inverter speed, rps); PIV 276 InvCur (Inverter current, A); BI 289 ErrState (Unit error state).

How do I enable BMS control of the CoolAutomation CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P?

BACnet must be enabled on the gateway; these objects belong to its PRO (service data) functionality.

How do I check these points on the real CoolMasterNet Daikin VRV outdoor unit (PRO) objects - VRV4S1, VRV4S2, VRV-3S, VRV-3P?

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 CoolAutomation BACnet points lists

Source: BACnet Integration Guidelines - CoolMasterNet, CooLinkNet, CooLinkHub, CooLinkBridge · rev. Rev 0.5, 2019-04-29. Object names, instances and units are reproduced as published; descriptions are our own.