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VRF outdoor unit monitoring via BACnet gateway · BACnet points list

CoolAutomation CoolMasterNet Mitsubishi Heavy Industries L3SC / KYWC outdoor unit (PRO) objects BACnet points list

Updated 12 November 2026

Short answer

With PRO functionality, CoolAutomation gateways publish service data from Mitsubishi Heavy Industries outdoor units of the L3SC and KYWC series over BACnet: outdoor, heat exchanger, discharge, under-dome and suction temperatures, compressor currents, high and low pressure, operation mode, inverter speed, fan speeds, EEV positions, oil return data, relay and solenoid valve states and calculated superheats (47 objects). Monitoring only.

This page lists 47 BACnet objects for the CoolAutomation CoolMasterNet Mitsubishi Heavy Industries L3SC / KYWC outdoor unit (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 Heavy Industries L3SC / KYWC outdoor unit (PRO) objects
Equipment
VRF outdoor unit monitoring via BACnet gateway
Equipment type
VRF & split air conditioners
BACnet objects
47 (0 writable)
Transport
BACnet IP, BACnet MS/TP
Firmware
Not stated
Default device instance
64
Also known as
Mitsubishi Heavy VRF BACnet, MHI KX BACnet, CoolMasterNet MH, L3SC, KYWC
Brands covered
Mitsubishi Heavy Industries
Source document
BACnet Integration Guidelines - CoolMaster Product Line, CooLinkNet, CooLinkHub, CooLinkBridge · rev. Rev 1.0.4, 2026-07-06
Download CSV 47 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 Heavy Industries L3SC / KYWC outdoor unit (PRO) objects

Integration in brief

Use these objects to monitor Mitsubishi Heavy Industries outdoor equipment only; control stays on the CoolMasterNet indoor-unit objects. Map the outdoor block's VA and trend pressures, compressor speed and discharge temperature (this series has no error output object).

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
PIV 270OpeModeOperation mode codeRead
BI 28252C1Compressor 1 contactor (running)Read
PIV 271Inv1HzInverter compressor speed, HzRead
AI 257ThoAOutdoor air temperature, °CRead
AI 268HPHigh pressure, MPaRead
AI 269LPLow pressure, MPaRead
AI 260ThoD1Discharge temperature, °CRead

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 Heavy Industries L3SC / KYWC outdoor unit (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.

47 of 47 shown
Type
AnalogBinary
Show
CoolAutomation CoolMasterNet Mitsubishi Heavy Industries L3SC / KYWC outdoor unit (PRO) objects BACnet Points List
DescriptionStates
CSV256TypeOutdoor Unit Type NameRead
AImin257ThoAOutdoor air Temperature°CRead
AI258ThoR1Heat Exchanger Temp.1°CRead
AI259ThoR2Heat Exchanger Temp.2°CRead
AImin260ThoD1Discharge Temp.1°CRead
AI261ThoC1Under-dome Temp.1°CRead
AI262ThoP1ThoP1°CRead
AI263ThoSThoS°CRead
AI264ThoSCThoSC°CRead
AI265ThoHThoH°CRead
AI266CT1Comp.1 CurrentARead
AI267CT-inv1CT-inv1ARead
AImin268HPHigh PressureMPaRead
AImin269LPLow PressureMPaRead
PIVmin270OpeModeOperation ModeRead
PIVmin271Inv1HzINV1 Actual HzHzRead
PIV272FMO1FMO1(DC)rpmRead
PIV273FMO2FMO2(DC)rpmRead
IV274EEVH1EEVH1plsRead
IV275EEVSCEEVSCplsRead
AI276ClTrgLPCooling Target LPMPaRead
AI277HtTrgHPHeating Target HPMPaRead
PIV278EEVH-PosOutdoor EEVH Initial Learning Opening PositionplsRead
AI279EEVSC-TgShTarget Superheat of EEVSC°CRead
PIV280OiRetAcc1Oil Return Accumulated Ammount(CM1)ccRead
PIV281OiRetCntDnOil Return Count DownminRead
BImin28252C152C1Read
BI283CH1CH1Read
BI28420S20SRead
BI285SV1SV1Read
BI286SV6SV6Read
BI287SV11SV11Read
BI288SV12SV12Read
BI28963H163H1Read
BI29063H1-R63H1-RRead
BI291CNS1CNS1Read
BI292CNS2CNS2Read
BI293CNG1CNG1Read
BI294CNG2CNG2Read
AI295DisPrsSatTDischarge Pressure Saturated Temperature°CRead
AI296SctPrsSatTSuction Pressure Saturated Temperature°CRead
AI297SctShSuction Superheat°CRead
AI298ScCiShSubcooling Coil Superheat°CRead
AI299UdSh1Under-dome Superheat 1°CRead
AI300ScCiSatPrs1Supercooled Coil Temperature Sensor 1 Saturation PressureMPaRead
AI301DisShDischarge Pipe Superheat Degree°CRead
AI302EEVH-TgShOutdoor Unit EEVH Target Superheat°CRead
Object ID lookup: CoolAutomation CoolMasterNet Mitsubishi Heavy Industries L3SC / KYWC outdoor unit (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 Heavy Industries L3SC / KYWC outdoor unit (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 Heavy Industries L3SC / KYWC outdoor unit (PRO) objects

How many BACnet points does the CoolAutomation CoolMasterNet Mitsubishi Heavy Industries L3SC / KYWC outdoor unit (PRO) objects have?

This list has 47 BACnet objects: 24 analog inputs, 13 binary inputs, 1 characterstring value, 2 integer values, 7 positive integer values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which CoolAutomation CoolMasterNet Mitsubishi Heavy Industries L3SC / KYWC outdoor unit (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 Heavy Industries L3SC / KYWC outdoor unit (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 Heavy Industries L3SC / KYWC outdoor unit (PRO) objects?

Start with PIV 270 OpeMode (Operation mode code); BI 282 52C1 (Compressor 1 contactor (running)); PIV 271 Inv1Hz (Inverter compressor speed, Hz); AI 257 ThoA (Outdoor air temperature, °C); AI 268 HP (High pressure, MPa); AI 269 LP (Low pressure, MPa); AI 260 ThoD1 (Discharge temperature, °C).

How do I enable BMS control of the CoolAutomation CoolMasterNet Mitsubishi Heavy Industries L3SC / KYWC outdoor unit (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 Heavy Industries L3SC / KYWC outdoor unit (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.