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Air-to-water heat pump monitoring via BACnet gateway · BACnet points list

CoolAutomation CoolMasterNet Mitsubishi Electric CAHV heat pump (PRO) objects BACnet points list

Updated 12 November 2026

Short answer

With PRO functionality, CoolAutomation gateways publish service data from Mitsubishi Electric CAHV units over BACnet: type, on/off level, setting and control, water temperature control flags, fan mode, hot water, mode, eco and anti-freeze flags, defrost mode, demand, CN142 connector states, thermistors TH1-TH16, HP1/LP1, currents, bus voltage, Ts/Twi/Two/Twg/Tout temperatures, LEV positions, compressor frequencies, X01-X72 and CN52 states, low-noise and demand limits, last error code and total hours (84 objects). Monitoring only.

This page lists 84 BACnet objects for the CoolAutomation CoolMasterNet Mitsubishi Electric CAHV heat pump (PRO) objects — 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 Mitsubishi Electric CAHV heat pump (PRO) objects
Equipment
Air-to-water heat pump monitoring via BACnet gateway
Equipment type
Heat pumps
BACnet objects
84 (0 writable)
Transport
BACnet IP, BACnet MS/TP
Firmware
Not stated
Default device instance
64
Also known as
Mitsubishi CAHV BACnet, CoolMasterNet Mitsubishi Electric, CAHV
Brands covered
Mitsubishi Electric
Source document
BACnet Integration Guidelines - CoolMaster Product Line, CooLinkNet, CooLinkHub, CooLinkBridge · rev. Rev 1.0.4, 2026-07-06
Download CSV 84 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 Mitsubishi Electric CAHV heat pump (PRO) objects

Integration in brief

Use these objects to monitor Mitsubishi Electric CAHV equipment only; control stays on the CoolMasterNet indoor-unit objects. Map the block's VA and trend mode, compressor frequencies, temperatures and the last error code.

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 258OnOffSetOn/off settingRead
PIV 266MdMode codeRead
PIV 271DfrMdDefrost mode codeRead
PIV 318COMP1Compressor 1 frequency, HzRead
PIV 319COMP2Compressor 2 frequency, HzRead
PIV 339TotHrTotal operating hoursRead
PIV 338ErrLast error codeRead

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 Mitsubishi Electric CAHV heat pump (PRO) objects 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.

84 of 84 shown
Type
AnalogBinary
Show
CoolAutomation CoolMasterNet Mitsubishi Electric CAHV heat pump (PRO) objects BACnet Points List
DescriptionStates
CSV256TypeOutdoor Unit Type NameRead
BI257OnOffLevOn/Off LevelRead
BImin258OnOffSetOn/Off settingRead
PIV259OnOffCtrlOn/Off CtrlRead
BI260WtrTCtrlWater temp CtrlRead
BI261MnWtrTCtrlMain water temp CtrlRead
BI262TSetTemp settingRead
BI263FnMdFan ModeRead
PIV264FnMdStFan Mode StatusRead
BI265HtWtrHot WaterRead
PIVmin266MdModeRead
BI267HtEcHeating EcoRead
BI268AnFrAnti FreezeRead
BI269CopCapCOP/CapacityRead
BI270MulCtrlMulti CtrlRead
PIVmin271DfrMdDefrost modeRead
BI272DmndDemandRead
BI27363H163H1Read
BI274CN142-B3CN142-B3Read
BI275CN142-C3CN142-C3Read
BI276CN142-C4CN142-C4Read
BI277CN142-D3CN142-D3Read
BI278CN142-D4CN142-D4Read
BI279CN142-D6CN142-D6Read
AI280TH1TH1°CRead
AI281TH2TH2°CRead
AI282TH3TH3°CRead
AI283TH4TH4°CRead
AI284TH5TH5°CRead
AI285TH6TH6°CRead
AI286TH7TH7°CRead
AI287TH8TH8°CRead
AI288TH9TH9°CRead
AI289TH10TH10°CRead
AI290TH11TH11°CRead
AI291TH12TH12°CRead
AI292TH13TH13°CRead
AI293TH14TH14°CRead
AI294TH15TH15°CRead
AI295TH16TH16°CRead
AI296THHSTHHS°CRead
AI297HP1HP1Read
AI298LP1LP1Read
AI299IdcIdcARead
AI300IuIuARead
AI301IwIwARead
AI302VdcVdcVRead
AI303TsTs°CRead
AI304TwiTwi°CRead
AI305TwoTwo°CRead
AI306TwgTwg°CRead
AI307ToutTout°CRead
AI308SHsSHs°CRead
AI309SHSH°CRead
AI310THc10THc10°CRead
AI311THc11THc11°CRead
AI312THc12THc12°CRead
AI313THc13THc13°CRead
AI314THc14THc14°CRead
AI315THc15THc15°CRead
PIV316LEV1LEV1plsRead
PIV317LEV2LEV2plsRead
PIVmin318COMP1COMP1HzRead
PIVmin319COMP2COMP2HzRead
PIV320FANFANRead
BI321X01X01Read
BI322X02X02Read
BI323X03X03Read
BI324X04X04Read
BI325X05X05Read
BI326X06X06Read
BI327X07X07Read
BI328X08X08Read
BI329X09X09Read
BI330X72X72Read
BI331CN52-2CN52-2Read
BI332CN52-3CN52-3Read
BI333CN52-4CN52-4Read
BI334CNOUTCNOUTRead
BI335CN52CCN52CRead
PIV336L-nL-noise%Read
PIV337DmndMDemand(max)%Read
PIVmin338ErrLast error codeRead
PIVmin339TotHrTotal hourhRead
Object ID lookup: CoolAutomation CoolMasterNet Mitsubishi Electric CAHV heat pump (PRO) objects 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 Mitsubishi Electric CAHV heat pump (PRO) objects 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 Mitsubishi Electric CAHV heat pump (PRO) objects

How many BACnet points does the CoolAutomation CoolMasterNet Mitsubishi Electric CAHV heat pump (PRO) objects have?

This list has 84 BACnet objects: 36 analog inputs, 34 binary inputs, 1 characterstring value, 13 positive integer values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which CoolAutomation CoolMasterNet Mitsubishi Electric CAHV heat pump (PRO) objects 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 Mitsubishi Electric CAHV heat pump (PRO) objects BACnet documentation?

The source is BACnet Integration Guidelines - CoolMaster Product Line, CooLinkNet, CooLinkHub, CooLinkBridge, revision Rev 1.0.4, 2026-07-06, published free by CoolAutomation at https://support.coolautomation.com/hc/en-us/article_attachments/38262832368157.

What are the minimum BACnet points to integrate the CoolAutomation CoolMasterNet Mitsubishi Electric CAHV heat pump (PRO) objects?

Start with BI 258 OnOffSet (On/off setting); PIV 266 Md (Mode code); PIV 271 DfrMd (Defrost mode code); PIV 318 COMP1 (Compressor 1 frequency, Hz); PIV 319 COMP2 (Compressor 2 frequency, Hz); PIV 339 TotHr (Total operating hours); PIV 338 Err (Last error code).

How do I enable BMS control of the CoolAutomation CoolMasterNet Mitsubishi Electric CAHV heat pump (PRO) objects?

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 Mitsubishi Electric CAHV heat pump (PRO) objects?

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 - CoolMaster Product Line, CooLinkNet, CooLinkHub, CooLinkBridge · rev. Rev 1.0.4, 2026-07-06. Object names, instances and units are reproduced as published; descriptions are our own.