Easy BACnet- Home
- BACnet points lists
- Midea
- IMMP-BAC(A) BACnet gateway - outdoor unit device
VRF outdoor unit gateway (BACnet IP) · BACnet points list
Midea IMMP-BAC(A) BACnet gateway - outdoor unit device BACnet points list
Updated 7 November 2026
The IMMP-BAC(A) gateway publishes each VRF outdoor unit as a separate BACnet IP device. The outdoor device is mostly monitoring: operating mode, run and alarm state, compressor frequencies and discharge temperatures, pressures, fan speeds, EXV openings, valve and heater outputs, and the error code.
This page lists 37 BACnet objects for the Midea IMMP-BAC(A) BACnet gateway - outdoor unit device — 0 of them writable — with each object’s type, instance number, name, engineering units and access. It is re-typed from Midea’s own free documentation, linked below.
- Manufacturer
- Midea
- Model
- IMMP-BAC(A) BACnet gateway - outdoor unit device
- Equipment
- VRF outdoor unit gateway (BACnet IP)
- Equipment type
- VRF & split air conditioners
- BACnet objects
- 37 (0 writable)
- Transport
- BACnet IP
- Firmware
- Not stated
- Also known as
- IMMP-BAC(A), K05.2-BACNET(A), IMMP-BAC-A
Reference only, provided as-is: verify against Midea’s current documentation and the live device before use. Not official Midea information. Terms of use.
BMS integration notes: Midea IMMP-BAC(A) BACnet gateway - outdoor unit device
The outdoor unit device is read-only monitoring. Map BI 1 run state, MI 1 mode, AI 1 ambient temperature and the compressor data, plus BI 2 alarm and AI 8 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.
| Object | Name | Why | Access |
|---|---|---|---|
| BI 1 | Encendido/ apagado | Outdoor unit running | Read |
| MI 1 | Estado del modo de funcionamiento | Operating mode | Read |
| AI 1 | Temperatura ambiente | Outdoor ambient temperature, °C | Read |
| AI 2 | Frecuencia del compresor 1 | Compressor 1 frequency, Hz | Read |
| BI 2 | Indicación de alarma | Outdoor unit alarm | Read |
| AI 8 | Código de avería | Error code (1-260 = A0...UU) | Read |
Network setup
- Default gateway IP address is 192.168.1.8; change it on the gateway web page, then set a BACnet network number between 2 and 254 (unique per gateway) and restart the gateway for it to take effect.
- Unit device instances follow the network/port/address formula in the notes.
Watch out for
- Outdoor device instances add 100 to the port block (network x 10000 + port x 1000 + 100 + address).
Midea IMMP-BAC(A) BACnet gateway - outdoor unit device 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.
| Description | States | |||||
|---|---|---|---|---|---|---|
| MImin | 1 | Estado del modo de funcionamiento | Outdoor unit operating mode | Read | 1=apagado, 2=reservado, 3=refrigeración, 4=calefacción, 5=refrigeración forzada, 6=refrigeración principal, 7=calefacción principal, 8=calefacción forzada | |
| BImin | 1 | Encendido/ apagado | On/off status | Read | 0=APAGADO, 1=ENCENDIDO | |
| BImin | 2 | Indicación de alarma | Alarm indication | Read | 0=Sin error, 1=Error | |
| BI | 3 | SV1 | Valve / heater output state | Read | ||
| BI | 4 | SV2 | Valve / heater output state | Read | ||
| BI | 5 | SV3 | Valve / heater output state | Read | ||
| BI | 6 | SV4 | Valve / heater output state | Read | ||
| BI | 7 | SV5 | Valve / heater output state | Read | ||
| BI | 8 | SV6 | Valve / heater output state | Read | ||
| BI | 9 | SV7 | Valve / heater output state | Read | ||
| BI | 10 | SV8 | Valve / heater output state | Read | ||
| BI | 11 | ST1 | Valve / heater output state | Read | ||
| BI | 12 | ST2 | Valve / heater output state | Read | ||
| BI | 13 | ST3 | Valve / heater output state | Read | ||
| BI | 14 | SV8B | Valve / heater output state | Read | ||
| BI | 15 | SV9 | Valve / heater output state | Read | ||
| BI | 17 | HEATER 1 | Valve / heater output state | Read | ||
| BI | 18 | HEATER 2 | Valve / heater output state | Read | ||
| AImin | 1 | Temperatura ambiente | Ambient temperature | °C | Read | |
| AImin | 2 | Frecuencia del compresor 1 | Compressor 1 frequency | Hz | Read | |
| AI | 3 | Frecuencia del compresor 2 | Compressor 2 frequency | Hz | Read | |
| AI | 4 | Temperatura de descarga del compresor 1 | Compressor 1 discharge temperature | °C | Read | |
| AI | 5 | Temperatura de descarga del compresor 2 | Compressor 2 discharge temperature | °C | Read | |
| AI | 6 | Alta presión | High pressure | bar | Read | |
| AI | 7 | Baja presión | Low pressure | bar | Read | |
| AImin | 8 | Código de avería | Error code (see code table) | Read | ||
| AI | 9 | Velocidad ventilador 1 | Fan 1 speed | Read | ||
| AI | 10 | Velocidad ventilador 2 | Fan 2 speed | Read | ||
| AI | 11 | T3 | T3 temperature | °C | Read | |
| AI | 12 | T3B | T3B temperature (reserved) | °C | Read | |
| AI | 13 | Versión | Software version | Read | ||
| AI | 14 | Tipo de unidad exterior | Outdoor unit type | Read | ||
| AI | 15 | Potencia de unidad exterior | Outdoor unit capacity | Read | ||
| AI | 16 | Apertura de Exv1 | EXV1 opening | Read | ||
| AI | 17 | Apertura de Exv2 | EXV2 opening | Read | ||
| AI | 18 | Apertura de Exv3 | EXV3 opening | Read | ||
| BV | 1 | Parada de emergencia | Emergency stop (reserved) | Read | 0=parada de emergencia APAGADA, 1=parada de emergencia ENCENDIDA |
No points match these filters.
Object ID lookup: Midea IMMP-BAC point IDs by name
MI1Estado del modo de funcionamientoBI1Encendido/ apagadoBI2Indicación de alarmaBI3SV1BI4SV2BI5SV3BI6SV4BI7SV5BI8SV6BI9SV7BI10SV8BI11ST1BI12ST2BI13ST3BI14SV8BBI15SV9BI17HEATER 1BI18HEATER 2AI1Temperatura ambienteAI2Frecuencia del compresor 1AI3Frecuencia del compresor 2AI4Temperatura de descarga del compresor 1AI5Temperatura de descarga del compresor 2AI6Alta presiónAI7Baja presiónAI8Código de averíaAI9Velocidad ventilador 1AI10Velocidad ventilador 2AI11T3AI12T3BAI13VersiónAI14Tipo de unidad exteriorAI15Potencia de unidad exteriorAI16Apertura de Exv1AI17Apertura de Exv2AI18Apertura de Exv3BV1Parada de emergencia
Integration notes
- The manual is in Spanish (Midea Spain); object names are kept as printed and the English descriptions are ours.
- Each unit is its own BACnet device. Indoor unit device instance = BACnet network number x 10000 + RS-485 port (0-3) x 1000 + indoor address (0-63); outdoor unit = network x 10000 + port x 1000 + 100 + outdoor address (0-31).
- Error codes are numbered 1-260 and map to the display codes A0...UU (blocks of 20 per letter).
- BV 1 emergency stop is marked reserved in the doc.
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 IMMP-BAC(A) BACnet gateway - outdoor unit device 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 Midea IMMP-BAC(A) BACnet gateway - outdoor unit device
How many BACnet points does the Midea IMMP-BAC(A) BACnet gateway - outdoor unit device have?
This list has 37 BACnet objects: 18 analog inputs, 17 binary inputs, 1 binary value, 1 multi-state input. The exact set on a given unit depends on its firmware, installed options and configuration.
Which Midea IMMP-BAC(A) BACnet gateway - outdoor unit device BACnet points are writable?
None of the listed objects are marked writable in the source documentation.
Where is the official Midea IMMP-BAC(A) BACnet gateway - outdoor unit device BACnet documentation?
The source is Manual de Instalación y de Usuario, Sistema de control IMMP-BAC(A) (K05.2-BACNET(A)) (210427_MI-MU_F-CTR_IMMP-BAC-A-ES), revision 2021-04, published free by Midea at https://www.midea.es/wp-content/uploads/2021/04/210427_MI-MU_F-CTR_IMMP-BAC-A-ES.pdf.
What are the minimum BACnet points to integrate the Midea IMMP-BAC(A) BACnet gateway - outdoor unit device?
Start with BI 1 Encendido/ apagado (Outdoor unit running); MI 1 Estado del modo de funcionamiento (Operating mode); AI 1 Temperatura ambiente (Outdoor ambient temperature, °C); AI 2 Frecuencia del compresor 1 (Compressor 1 frequency, Hz); BI 2 Indicación de alarma (Outdoor unit alarm); AI 8 Código de avería (Error code (1-260 = A0...UU)).
How do I check these points on the real IMMP-BAC(A) BACnet gateway - outdoor unit device?
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 Midea BACnet points lists
- VRF BACnet gateway (V8 indoor unit device)
Midea GW3-BAC gateway - V8 VRF indoor unit device
Midea V8 series VRF indoor units connected through the GW3-BAC gateway.
Also known as: GW3-BAC, Midea GW3-BAC IDU, Midea V8 BACnet gateway, Midea VRF V8 BACnet IP, Pasarela GW3-BAC - VRF BACnet gateway (V8 outdoor unit device)
Midea GW3-BAC gateway - V8 VRF outdoor unit device
Midea V8 series VRF outdoor units connected through the GW3-BAC gateway.
Also known as: GW3-BAC, Midea GW3-BAC ODU, Midea V8 outdoor unit BACnet, Midea VRF V8 BACnet IP - VRF hydronic module (air to water heat pump) gateway (BACnet IP)
Midea IMMP-BAC(A) BACnet gateway - HTHM hydronic module device
Midea high-temperature hydronic modules (HTHM) on an MDV VRF system, connected through the IMMP-BAC(A) gateway.
Also known as: IMMP-BAC(A), K05.2-BACNET(A), IMMP-BAC-A - VRF indoor unit gateway (BACnet IP)
Midea IMMP-BAC(A) BACnet gateway - indoor unit device
Midea MDV VRF and commercial indoor units connected through the IMMP-BAC(A) building control gateway.
Also known as: IMMP-BAC(A), K05.2-BACNET(A), IMMP-BAC-A
Source: Manual de Instalación y de Usuario, Sistema de control IMMP-BAC(A) (K05.2-BACNET(A)) · 210427_MI-MU_F-CTR_IMMP-BAC-A-ES · rev. 2021-04. Object names, instances and units are reproduced as published; descriptions are our own.