Fujitsu UTY-VBGX BACnet Gateway for VRF BACnet points list

Updated 28 October 2026

Short answer

The UTY-VBGX connects a Fujitsu Airstage VRF network to BACnet IP and creates a fixed set of objects for every indoor and outdoor unit it finds, plus gateway-wide batch commands. Object names and instances are built from the refrigerant system and unit addresses, so the instance number tells you which unit a point belongs to. Device name, instance and port are set with the Fujitsu configuration tool.

This page lists 55 BACnet objects for the Fujitsu UTY-VBGX BACnet Gateway for VRF — 25 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Fujitsu’s own free documentation, linked below.

Manufacturer: Fujitsu
Model: UTY-VBGX BACnet Gateway for VRF
Equipment: VRF BACnet IP gateway
Equipment type: VRF & split air conditioners
BACnet objects: 55 (25 writable)
Transport: BACnet IP
Firmware: Not stated
Default device instance: 144000
Also known as: UTY-VBGX, UTYVBGX, BACnet Gateway for VRF System, Fujitsu General BACnet gateway
Source document: BACnet Gateway for VRF System UTY-VBGX Instruction Manual (PICS & User Manual) · rev. r1.3.2 (2017)

Download CSV 55 rows Download EDE B.I.G.-EU JSON Manufacturer PDF ↗ Download Easy BACnet Mobile App Google Play

BMS integration notes: Fujitsu UTY-VBGX BACnet Gateway for VRF

Integration in brief

Set the gateway IP, device instance and LON unit address with the Fujitsu configuration tool, scan the VRF network for units, and download the configuration. Each indoor unit then appears as a block of IU_rr_uu objects; map on/off, mode, setpoint, room temp and the error status first.

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.

Object	Name	Why	Access
BO 100101	IU_rr_uu_Operation_Setting	Start/stop the indoor unit	Command
MO 100101	IU_rr_uu_OperationMode_Setting	Command the operating mode	Command
AO 100101	IU_rr_uu_SetTemp_Setting	Setpoint command	Command
MO 110101	IU_rr_uu_FanSpeed_Setting	Fan speed command	Command
BI 110101	IU_rr_uu_Operation_Status	Confirm run status	Read
MI 100101	IU_rr_uu_OperationMode_Status	Read back the mode	Read
AI 110101	IU_rr_uu_SpaceTemp_Status	Room temperature	Read
BI 100101	IU_rr_uu_Exists_Status	Shows whether the unit is present	Read
BI 150101	IU_rr_uu_Error_Status	Indoor unit fault	Read
MI 150101	IU_rr_uu_ErrorCode_Status	Error code (1-255) when a fault is active	Read

Enable & remote start

No enable point is described. Remote controller prohibition is a 65-state multistate (IU_rr_uu_RC_Prohibit_Setting, or Batch_RC_Prohibition_Setting for all units) whose states combine filter reset, start, start/stop, mode, setpoint and timer lockouts, plus All. Outdoor units have a ForcedOff setting.

Network setup

Default IP 192.168.100.144, mask 255.255.255.0, configuration password 'admin'.
Default device instance 144 in the configuration tool (the object table shows 144000); give each gateway a unique value.
UDP port 47808 by default; network role can be disabled, foreign device or BBMD.
LON unit address of the gateway must be 92-95 and unique on the VRF network; temperature units (C/F) are chosen in the tool.
A unit scan takes about 5-6 minutes; units can also be added manually.

Watch out for

Outputs keep Priority_Array slots 1-15 empty and put the value in slot 16, so priority-based commanding may not behave as expected.
State_Text cannot be read as a whole array; read each index separately.
Input objects list Reliability as NO_FAULT_DETECTED or UNRELIABLE_OTHER; the manual does not say exactly when UNRELIABLE_OTHER is set.
Error code meanings come from the manual's error tables for each series and may be added without notice.

Fujitsu UTY-VBGX BACnet Gateway for VRF 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.

55 of 55 shown

Type

Other

Access

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Fujitsu UTY-VBGX BACnet Gateway for VRF BACnet Points List
			Description			States
DEV	144000	UTY-VBGX	Gateway device object		Read
BI	0	Gateway_ES_Status	Energy saving status		Read	Inactive=Not used, Active=Energy Saving
BI	1	Gateway_Error_Status	Gateway error status		Read	Inactive=Normal, Active=Abnormal
BO	0	Gateway_ES_Setting	Energy saving command		Command	Inactive=Not Used, Active=Energy Saving
MI	0	Gateway_ErrorCode_Status	Gateway error code		Read	1=No Error, 2=Hardware Error, 3=No Configuration Present
AO	0	Batch_SetTemp_Setting	Setpoint for all indoor units	°C (or °F per configuration)	Command
BO	1	Batch_Operation_Setting	On/off for all indoor units		Command	Inactive=Off, Active=On
MO	0	Batch_OperationMode_Setting	Mode for all indoor units		Command	1=Cool, 2=Heat, 3=Fan, 4=Dry, 5=Auto
MO	1	Batch_FanSpeed_Setting	Fan speed for all indoor units		Command	1=Low, 2=High, 3=Med, 4=Auto, 5=Quiet, 6=Med-Low, 7=Med-High
MO	2	Batch_RC_Prohibition_Setting	Remote controller prohibition for all units (65 states)		Command	See RC Prohibition table in manual (65 states)
AI	100101	IU_rr_uu_SetTemp_Status	Current setpoint	°C (or °F per configuration)	Read
AImin	110101	IU_rr_uu_SpaceTemp_Status	Room temperature	°C (or °F per configuration)	Read
AI	120101	IU_rr_uu_AutoTempLoLim_Status	Auto mode setpoint low limit	°C (or °F per configuration)	Read
AI	130101	IU_rr_uu_AutoTempHiLim_Status	Auto mode setpoint high limit	°C (or °F per configuration)	Read
AI	140101	IU_rr_uu_CoolTempLoLim_Status	Cool mode setpoint low limit	°C (or °F per configuration)	Read
AI	150101	IU_rr_uu_CoolTempHiLim_Status	Cool mode setpoint high limit	°C (or °F per configuration)	Read
AI	160101	IU_rr_uu_HeatTempLoLim_Status	Heat mode setpoint low limit	°C (or °F per configuration)	Read
AI	170101	IU_rr_uu_HeatTempHiLim_Status	Heat mode setpoint high limit	°C (or °F per configuration)	Read
AOmin	100101	IU_rr_uu_SetTemp_Setting	Setpoint command	°C (or °F per configuration)	Command
AO	110101	IU_rr_uu_AutoTempLoLim_Setting	Set auto mode low limit	°C (or °F per configuration)	Command
AO	120101	IU_rr_uu_AutoTempHiLim_Setting	Set auto mode high limit	°C (or °F per configuration)	Command
AO	130101	IU_rr_uu_CoolTempLoLim_Setting	Set cool mode low limit	°C (or °F per configuration)	Command
AO	140101	IU_rr_uu_CoolTempHiLim_Setting	Set cool mode high limit	°C (or °F per configuration)	Command
AO	150101	IU_rr_uu_HeatTempLoLim_Setting	Set heat mode low limit	°C (or °F per configuration)	Command
AO	160101	IU_rr_uu_HeatTempHiLim_Setting	Set heat mode high limit	°C (or °F per configuration)	Command
BImin	100101	IU_rr_uu_Exists_Status	Indoor unit present on the network		Read	Inactive=Not Exists, Active=Exists
BImin	110101	IU_rr_uu_Operation_Status	Run status		Read	Inactive=Off, Active=On
BI	120101	IU_rr_uu_ThermostatOFF_Status	Thermostat-off status		Read	Inactive=Reset, Active=Set
BI	130101	IU_rr_uu_FilterSign_Status	Filter sign		Read	Inactive=Unsigned, Active=Signed
BI	140101	IU_rr_uu_Emergency_Status	Emergency stop status		Read	Inactive=Normal, Active=Stop
BImin	150101	IU_rr_uu_Error_Status	Indoor unit fault		Read	Inactive=Normal, Active=Fault
BI	160101	IU_rr_uu_TempLimValid_Status	Setpoint limits enabled		Read	Inactive=Invalid, Active=Valid
BOmin	100101	IU_rr_uu_Operation_Setting	On/off command		Command	Inactive=Off, Active=On
BO	110101	IU_rr_uu_ThermostatOFF_Setting	Thermostat-off command		Command	Inactive=Reset, Active=Set
BO	120101	IU_rr_uu_Reset_Filter_Setting	Filter sign reset		Command	Inactive=Reset, Active=Not Reset
BO	130101	IU_rr_uu_TempLimValid_Setting	Enable setpoint limits		Command	Inactive=Invalid, Active=Valid
MImin	100101	IU_rr_uu_OperationMode_Status	Current mode		Read	1=Cool, 2=Heat, 3=Fan, 4=Dry, 5=Auto
MI	110101	IU_rr_uu_FanSpeed_Status	Current fan speed		Read	1=Low, 2=High, 3=Med, 4=Auto, 5=Quiet, 6=Med-Low, 7=Med-High
MI	120101	IU_rr_uu_AirFlowDirVT_Status	Vertical louver position		Read	1=1, 2=2, 3=3, 4=4, 5=Swing
MI	130101	IU_rr_uu_AirFlowDirHZ_Status	Horizontal louver position		Read	1=1, 2=2, 3=3, 4=4, 5=5, 6=Swing
MI	140101	IU_rr_uu_RC_Prohibit_Status	Remote controller prohibition status (65 states)		Read	See RC Prohibition table in manual (65 states)
MImin	150101	IU_rr_uu_ErrorCode_Status	Indoor unit error code (1-255)		Read	See error content table in manual
MOmin	100101	IU_rr_uu_OperationMode_Setting	Mode command		Command	1=Cool, 2=Heat, 3=Fan, 4=Dry, 5=Auto
MOmin	110101	IU_rr_uu_FanSpeed_Setting	Fan speed command		Command	1=Low, 2=High, 3=Med, 4=Auto, 5=Quiet, 6=Med-Low, 7=Med-High
MO	120101	IU_rr_uu_AirFlowDirVT_Setting	Vertical louver command		Command	1=1, 2=2, 3=3, 4=4, 5=Swing
MO	130101	IU_rr_uu_AirFlowDirHZ_Setting	Horizontal louver command		Command	1=1, 2=2, 3=3, 4=4, 5=5, 6=Swing
MO	140101	IU_rr_uu_RC_Prohibit_Setting	Remote controller prohibition command		Command	See RC Prohibition table in manual (65 states)
BI	300101	OU_rr_uu_Error_Status	Outdoor unit fault		Read	Inactive=Normal, Active=Fault
BI	310101	OU_rr_uu_ForcedOff_Status	Forced-off status		Read	Inactive=Reset, Active=Set
BO	310101	OU_rr_uu_ForcedOff_Setting	Forced-off command		Command	Inactive=Reset, Active=Set
MI	300101	OU_rr_uu_ErrorCode_Status	Outdoor unit error code (1-255)		Read	See error content table in manual
MI	310101	OU_rr_uu_CapacitySave_Status	Capacity saving level		Read	1=Not set, 2=100%, 3=90%, 4=80%, 5=70%, 6=60%, 7=50%, 8=40%
MI	320101	OU_rr_uu_LowNoiseOp_Status	Low noise operation status		Read	1=Not Set, 2=-/-/E, 3=-/A/-, 4=-/A/E, 5=1/-/-, 6=1/-/E, 7=1/A/-, 8=1/A/E, 9=2/-/-, 10=2/-/E, 11=2/A/-, 12=2/A/E, 13=3/-/-, 14=3/-/E, 15=3/A/-, 16=3/A/E
MO	300101	OU_rr_uu_LowNoiseOp_Setting	Low noise operation command		Command	1=Stop, 2=Level1-Quiet, 3=Level1-Ability, 4=Level2-Quiet, 5=Level2-Ability, 6=Level3-Quiet, 7=Level3-Ability
MO	310101	OU_rr_uu_CapacitySave_Setting	Capacity saving command		Command	1=Not set, 2=100%, 3=90%, 4=80%, 5=70%, 6=60%, 7=50%, 8=40%

Integration notes

Indoor unit instances are TTrruu: TT = point code (10-17), rr = refrigerant system address (00-99), uu = indoor unit address (00-63). Instances here use rr=01, uu=01 (e.g. 100101).
Outdoor unit instances are 30rruu-32rruu with uu = outdoor unit address (0-3). Gateway and batch objects use fixed low instances (0-2).
The detailed object pages give different OU instances (ForcedOff_Setting 30rruu, CapacitySave_Status 32rruu, CapacitySave_Setting 33rruu) than the summary table used here; verify on site.
The object table lists the device as 144000; the configuration tool section says the default Device Instance is 144. Each gateway needs a unique value.
Outputs keep Priority_Array slots 1-15 empty and mirror Present_Value in slot 16; State_Text must be read one array index at a time.
Error code and RC prohibition state texts are long lookup tables in the manual and are not reproduced here.

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. Easy BACnet scans a network for BACnet IP devices from an Android phone, reads every object on the UTY-VBGX BACnet Gateway for VRF 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 Fujitsu UTY-VBGX BACnet Gateway for VRF

How many BACnet points does the Fujitsu UTY-VBGX BACnet Gateway for VRF have?

This list has 55 BACnet objects: 8 analog inputs, 8 analog outputs, 11 binary inputs, 7 binary outputs, 1 device, 10 multi-state inputs, 10 multi-state outputs. The exact set on a given unit depends on its firmware, installed options and configuration.

Which Fujitsu UTY-VBGX BACnet Gateway for VRF BACnet points are writable?

25 of the 55 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.

Where is the official Fujitsu UTY-VBGX BACnet Gateway for VRF BACnet documentation?

The source is BACnet Gateway for VRF System UTY-VBGX Instruction Manual (PICS & User Manual), revision r1.3.2 (2017), published free by Fujitsu at https://www.bacnetinternational.net/catalog/manu/fujitsu%20general%20limited/UTY-VBGX%20PICS%20&%20User%20Manual%20eng%20r1.3.2.pdf.

What are the minimum BACnet points to integrate the Fujitsu UTY-VBGX BACnet Gateway for VRF?

Start with BO 100101 IU_rr_uu_Operation_Setting (Start/stop the indoor unit); MO 100101 IU_rr_uu_OperationMode_Setting (Command the operating mode); AO 100101 IU_rr_uu_SetTemp_Setting (Setpoint command); MO 110101 IU_rr_uu_FanSpeed_Setting (Fan speed command); BI 110101 IU_rr_uu_Operation_Status (Confirm run status); MI 100101 IU_rr_uu_OperationMode_Status (Read back the mode); AI 110101 IU_rr_uu_SpaceTemp_Status (Room temperature); BI 100101 IU_rr_uu_Exists_Status (Shows whether the unit is present); BI 150101 IU_rr_uu_Error_Status (Indoor unit fault); MI 150101 IU_rr_uu_ErrorCode_Status (Error code (1-255) when a fault is active).

How do I enable BMS control of the Fujitsu UTY-VBGX BACnet Gateway for VRF?

How do I check these points on the real UTY-VBGX BACnet Gateway for VRF?

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.

Source: BACnet Gateway for VRF System UTY-VBGX Instruction Manual (PICS & User Manual) · rev. r1.3.2 (2017). Object names, instances and units are reproduced as published; descriptions are our own.