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VRF outdoor unit monitoring via BACnet gateway · BACnet points list

CoolAutomation CoolMasterNet LG WATER5 master outdoor unit (PRO) objects BACnet points list

Updated 12 November 2026

Short answer

With PRO functionality, CoolAutomation gateways publish service data from LG WATER5 master outdoor units over BACnet: type, operation mode, error code, target and current high and low pressure, compression ratio, superheat and subcooling, compressor speed, EEV positions, refrigerant and outdoor temperatures, inverter currents, voltages and IPM temperatures, and valve and compressor states, including heat source water in and out temperatures (41 objects). Monitoring only.

This page lists 41 BACnet objects for the CoolAutomation CoolMasterNet LG WATER5 master 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 LG WATER5 master outdoor unit (PRO) objects
Equipment
VRF outdoor unit monitoring via BACnet gateway
Equipment type
VRF & split air conditioners
BACnet objects
41 (0 writable)
Transport
BACnet IP, BACnet MS/TP
Firmware
Not stated
Default device instance
64
Also known as
LG Multi V Water 5 BACnet, LG WATER5 BACnet, CoolMasterNet LG, WATER5 Master
Brands covered
LG
Source document
BACnet Integration Guidelines - CoolMaster Product Line, CooLinkNet, CooLinkHub, CooLinkBridge · rev. Rev 1.0.4, 2026-07-06
Download CSV 41 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 LG WATER5 master outdoor unit (PRO) objects

Integration in brief

Use these objects to monitor LG outdoor equipment only; control stays on the CoolMasterNet indoor-unit objects. Map the master outdoor unit's VA and trend water temperatures, pressures and 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
CSV 257ModeOperation mode textRead
BI 291CompOperCompressor runningRead
PIV 266Inv1TrcFrqInverter compressor frequency, HzRead
AI 278HtSrcWtrInTHeat source water inlet temp, °CRead
AI 277HtSrcWtrOuTHeat source water outlet temp, °CRead
PIV 262HiPrsTrcHigh pressure, kPaRead
PIV 263LoPrsTrcLow pressure, kPaRead
AI 273Inv1DisTInverter compressor discharge temp, °CRead
PIV 258ErrError 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 LG WATER5 master 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.

41 of 41 shown
Type
AnalogBinary
Show
CoolAutomation CoolMasterNet LG WATER5 master outdoor unit (PRO) objects BACnet Points List
DescriptionStates
CSV256TypeOutdoor Unit Type NameRead
CSVmin257ModeOperation ModeRead
PIVmin258ErrError CodeRead
PIV259HiPrsTrgTarget high pressurekPaRead
PIV260LoPrsTrgTarget low pressurekPaRead
AI261SCSHTrgTarget degree of subcooling and super heat°CRead
PIVmin262HiPrsTrcCurrent high pressurekPaRead
PIVmin263LoPrsTrcCurrent low pressurekPaRead
AI264ComprRatioCompression ratioRead
PIV265Inv1TrgFrqInverter 1 target frequencyHzRead
PIVmin266Inv1TrcFrqInverter 1 current frequencyHzRead
PIV267MainEEVMain EEVplsRead
PIV268ScEEVSubcooling EEVplsRead
AI269AirTOutdoor air temperature°CRead
AI270SuctTCompressor suction temperature°CRead
AI271BubTCondenser temperature°CRead
AI272DewTEvaporator temperature°CRead
AImin273Inv1DisTInverter 1 discharge temperature°CRead
AI274HtCnclEEVTHeat cancel EEV temperature°CRead
AI275ScOutTSubcooling outlet temperature°CRead
AI276LiqTLiquid pipe temperature°CRead
AImin277HtSrcWtrOuTHeat source water out°CRead
AImin278HtSrcWtrInTHeat source water in°CRead
AI279SHTrcCurrent degree of super heat°CRead
AI280SCTrcCurrent degree of subcooling°CRead
AI281SCSCTrcCurrent degree of subcooling and super heat°CRead
PIV282HtCnclEEVHeat cancel EEVplsRead
AI283Inv1InCTInverter 1 input currentARead
PIV284Inv1InVTInverter 1 input voltageVRead
AI285Inv1PhsCTInverter 1 phase currentARead
PIV286Inv1DcLnkInverter 1 DC LINK voltageVRead
PIV287Inv1IpmTInverter 1 IPM temperature°CRead
BI2884way4 WAY valveRead
BI289Inv1HtVlvInverter1 heaterRead
BI290OilLvl1Oil level 1Read
BImin291CompOperCompressor operationRead
BI292HotGasHot gasRead
BI293Inv1BkpInverter1 backupRead
BI294DDCDDCRead
PIV295MICOMMICOM versionRead
PIV296CompQtyCompressor quantityRead
Object ID lookup: CoolAutomation CoolMasterNet LG WATER5 master outdoor unit 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 LG WATER5 master 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 LG WATER5 master outdoor unit (PRO) objects

How many BACnet points does the CoolAutomation CoolMasterNet LG WATER5 master outdoor unit (PRO) objects have?

This list has 41 BACnet objects: 17 analog inputs, 7 binary inputs, 2 characterstring values, 15 positive integer values. The exact set on a given unit depends on its firmware, installed options and configuration.

Which CoolAutomation CoolMasterNet LG WATER5 master 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 LG WATER5 master 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 LG WATER5 master outdoor unit (PRO) objects?

Start with CSV 257 Mode (Operation mode text); BI 291 CompOper (Compressor running); PIV 266 Inv1TrcFrq (Inverter compressor frequency, Hz); AI 278 HtSrcWtrInT (Heat source water inlet temp, °C); AI 277 HtSrcWtrOuT (Heat source water outlet temp, °C); PIV 262 HiPrsTrc (High pressure, kPa); PIV 263 LoPrsTrc (Low pressure, kPa); AI 273 Inv1DisT (Inverter compressor discharge temp, °C); PIV 258 Err (Error code).

How do I enable BMS control of the CoolAutomation CoolMasterNet LG WATER5 master 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 LG WATER5 master 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.