{
 "manufacturer": "Mitsubishi Electric",
 "manufacturer_slug": "mitsubishi-electric",
 "model": "Procon MelcoBEMS MINI (A1M+) - Air-To-Air units",
 "short_model": "MelcoBEMS MINI Air-to-Air",
 "model_slug": "melcobems-mini-a1m-plus-air-to-air",
 "aliases": [
  "A1M+",
  "MelcoBEMS MINI A1M PLUS",
  "MelcoBEMS MINI (A1M)",
  "Procon A1M"
 ],
 "equipment_type": "Split / VRF indoor unit interface (single unit)",
 "applies_to": "Mitsubishi Electric air-to-air split and indoor units connected one per adapter through the CN105 connector.",
 "summary": "The MelcoBEMS MINI (A1M+) plugs into the CN105 connector of one Mitsubishi Electric indoor unit and serves it on BACnet MS/TP (RS-485) or BACnet IP. For air-to-air units it gives on/off, mode, setpoint, fan speed and vane commands with matching status objects, room temperature, the fault code, and an option to feed a BMS room temperature to the unit.",
 "bacnet_transport": [
  "BACnet IP",
  "BACnet MS/TP"
 ],
 "firmware": "4.1.1",
 "default_device_instance": null,
 "access_inferred": true,
 "notes": [
  "Access is not printed per object; it follows the guide's property table (AV, BO and multistate outputs have a writable present value and priority array; inputs are read-only).",
  "The adapter detects the connected unit type and only serves the matching object list (Air-To-Air, Air-To-Water or Lossnay).",
  "Temperature objects read in °C or °F according to the Temperature Units multistate output.",
  "The older MelcoBEMS MINI (A1M, BACnet MS/TP only) has the same objects 0-11 but not BO 12 / AV 13 (external temperature)."
 ],
 "source": {
  "title": "Procon MelcoBEMS MINI (A1M+) Installation Manual (manual 1.0.3, firmware 4.1.1)",
  "doc_number": null,
  "revision_date": null,
  "url": "https://library.mitsubishielectric.co.uk/pdf/download_full/5538"
 },
 "integration": {
  "summary": "Set DIP switch 7 to BACnet, give the adapter a node address or IP, then write on/off, mode, setpoint and fan speed and read the matching state objects, room temperature and fault code.",
  "minimum_points": [
   {
    "ref": "BO 0",
    "name": "Drive OFF/ON Setup",
    "why": "Unit on/off command"
   },
   {
    "ref": "MO 3",
    "name": "Mode Setup",
    "why": "Mode command (heat/dry/cool/fan/auto)"
   },
   {
    "ref": "AV 2",
    "name": "Setpoint",
    "why": "Temperature setpoint"
   },
   {
    "ref": "MO 5",
    "name": "Fan Speed Setup",
    "why": "Fan speed command"
   },
   {
    "ref": "BI 1",
    "name": "Drive OFF/ON State",
    "why": "On/off status"
   },
   {
    "ref": "MI 4",
    "name": "Mode State",
    "why": "Current mode"
   },
   {
    "ref": "AI 10",
    "name": "Inlet Temperature",
    "why": "Room (inlet) temperature"
   },
   {
    "ref": "AI 11",
    "name": "Fault Code",
    "why": "4-digit fault code, 8000 = no error"
   }
  ],
  "enable": "No separate enable; the Setup objects command the indoor unit directly.",
  "heartbeat": null,
  "remote_sensors": "Set External Temperature ON/OFF Setup (BO 12) to ON and write External Temperature Input (AV 13); the unit then uses that value instead of its own temperature.",
  "setup": [
   "DIP switch 7 OFF selects BACnet (MS/TP and BACnet IP); ON selects Modbus RTU.",
   "DIP switches 1-5 set the RS-485 node address 1-30 (all OFF = 1, all ON = set in software); it is the MS/TP station ID.",
   "DIP switch 6 ON fixes RS-485 at 9600 baud, no parity; OFF uses the software baud rate (MS/TP up to 76800).",
   "Default IP address 192.168.92.114; network settings are changed on the adapter's web page.",
   "Device instance, Max Master and Max Info Frames are set through Modbus holding registers 272-275."
  ],
  "gotchas": [
   "Fan speed and vane positions available depend on the indoor unit model.",
   "If one adapter serves a twin/triple/quad system, the fault code object should not be relied on; the guide recommends one adapter per indoor unit."
  ]
 },
 "points": [
  {
   "type": "BO",
   "instance": 0,
   "name": "Drive OFF/ON Setup",
   "description": "",
   "units": "",
   "access": "C",
   "states": "0=Drive OFF, 1=Drive ON"
  },
  {
   "type": "BI",
   "instance": 1,
   "name": "Drive OFF/ON State",
   "description": "",
   "units": "",
   "access": "R",
   "states": "0=Drive OFF, 1=Drive ON"
  },
  {
   "type": "AV",
   "instance": 2,
   "name": "Setpoint",
   "description": "",
   "units": "°C/°F",
   "access": "C",
   "states": ""
  },
  {
   "type": "MO",
   "instance": 3,
   "name": "Mode Setup",
   "description": "",
   "units": "",
   "access": "C",
   "states": "1=Heating, 2=Humidity reduction, 3=Cooling, 4=Ventilation, clean air operation, 5=Auto Operation"
  },
  {
   "type": "MI",
   "instance": 4,
   "name": "Mode State",
   "description": "",
   "units": "",
   "access": "R",
   "states": "1=Heating, 2=Humidity reduction, 3=Cooling, 4=Ventilation, clean air operation, 5=Auto Operation"
  },
  {
   "type": "MO",
   "instance": 5,
   "name": "Fan Speed Setup",
   "description": "",
   "units": "",
   "access": "C",
   "states": "1=Auto, 2=Quiet, 3=Weak, 4=Strong, 5=Very strong (SH i)"
  },
  {
   "type": "MI",
   "instance": 6,
   "name": "Fan Speed State",
   "description": "",
   "units": "",
   "access": "R",
   "states": "1=Auto, 2=Quiet, 3=Weak, 4=Strong, 5=Very strong (SH i)"
  },
  {
   "type": "MO",
   "instance": 7,
   "name": "Air Direction Setup",
   "description": "",
   "units": "",
   "access": "C",
   "states": "1=Auto, 2=Position 1, 3=Position 2, 4=Position 3, 5=Position 4, 6=Position 5, 7=Swing"
  },
  {
   "type": "MI",
   "instance": 8,
   "name": "Air Direction State",
   "description": "",
   "units": "",
   "access": "R",
   "states": "1=Auto, 2=Position 1, 3=Position 2, 4=Position 3, 5=Position 4, 6=Position 5, 7=Swing"
  },
  {
   "type": "MO",
   "instance": 9,
   "name": "Temperature Units",
   "description": "",
   "units": "",
   "access": "C",
   "states": "1=ºC, 2=ºF"
  },
  {
   "type": "AI",
   "instance": 10,
   "name": "Inlet Temperature",
   "description": "",
   "units": "°C/°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 11,
   "name": "Fault Code",
   "description": "",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 12,
   "name": "External Temperature ON/OFF Setup",
   "description": "Use AV 13 in place of the unit's own temperature",
   "units": "",
   "access": "C",
   "states": "0=Feature OFF, 1=Feature ON"
  },
  {
   "type": "AV",
   "instance": 13,
   "name": "External Temperature Input",
   "description": "",
   "units": "°C/°F",
   "access": "C",
   "states": ""
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/mitsubishi-electric/melcobems-mini-a1m-plus-air-to-air",
 "note": "Provided as-is. Point availability varies by firmware and options; verify against the live device.",
 "disclaimer": "DISCLAIMER: reference only, provided AS IS with no warranty. May contain errors or be out of date. You must verify every point against the manufacturer's current documentation and the live device before use. easybacnet.com accepts no liability for its use and is not affiliated with the manufacturer. Terms: https://easybacnet.com/terms#content"
}