{
 "manufacturer": "Daikin",
 "manufacturer_slug": "daikin",
 "model": "DMS502B71 Interface for use in BACnet",
 "model_slug": "dms502b71",
 "aliases": [
  "DMS502B71",
  "DAM411B51",
  "D-BACS",
  "Daikin VRV BACnet interface",
  "BACnet Interface",
  "EDUS72-749"
 ],
 "equipment_type": "VRV BACnet gateway",
 "applies_to": "Daikin VRV and ductless indoor units and ERV (VAM) units on up to four DIII-Net lines (256 groups).",
 "summary": "The DMS502B71 BACnet Interface (with the optional DAM411B51 expansion for DIII-Net ports 3 and 4) is a BACnet IP server that maps every VRV indoor unit group to the same 35-member object template. Integrators read on/off, mode, fan speed, room temperature, alarm and malfunction code, and can write start/stop, mode, setpoint, fan speed, airflow direction and remote-controller permit/prohibit per group. Object names end in the three-digit indoor unit number and instance numbers are built from that unit number.",
 "bacnet_transport": [
  "BACnet IP"
 ],
 "firmware": "Ver. 6.20 or later",
 "default_device_instance": null,
 "notes": [
  "Instances shown are for indoor unit 000. For unit number N, instance = N x 256 + member number, and XXX in the name is N (000-255).",
  "DIII-Net port 1 covers units 000-063, port 2 064-127, ports 3 and 4 (DAM411B51 option) 128-255.",
  "Member 15 is blank. Members 17 (centralized control) and 21 (forced system stop) exist only for units 000, 064, 128 and 192.",
  "Accumulated gas and power need the optional power-proportional-distribution setup; ERV members apply to VAM units.",
  "Setpoint, On/Off, mode, airflow direction and fan speed are saved to indoor-unit non-volatile memory; avoid frequent writes."
 ],
 "source": {
  "title": "Design Guide - Interface for use in BACnet (DMS502B71 / DAM411B51)",
  "doc_number": "EDUS72-749C",
  "revision_date": null,
  "url": "https://daikincomfort.com/docs/default-source/interface-for-use-bacnet-/eg-dms502b71bacnet-guide.pdf"
 },
 "integration": {
  "summary": "Commission the interface with the Daikin test-operation/setup tool, then address each indoor unit group by its object suffix (000-255). Typical integration writes start/stop, mode, setpoint and fan speed per group and reads on/off status, room temperature, alarm and malfunction code.",
  "minimum_points": [
   {
    "ref": "BO 1",
    "name": "StartStopCommand_XXX",
    "why": "Start/stop the indoor unit group"
   },
   {
    "ref": "MO 5",
    "name": "AirConModeCommand_XXX",
    "why": "Operation mode command"
   },
   {
    "ref": "AV 10",
    "name": "TempAdjust_XXX",
    "why": "Setpoint"
   },
   {
    "ref": "MO 7",
    "name": "AirFlowRateCommand_XXX",
    "why": "Fan speed command"
   },
   {
    "ref": "BI 2",
    "name": "StartStopStatus_XXX",
    "why": "Actual on/off status"
   },
   {
    "ref": "AI 9",
    "name": "RoomTemp_XXX",
    "why": "Room temperature (reference value)"
   },
   {
    "ref": "BI 3",
    "name": "Alarm_XXX",
    "why": "Indoor unit malfunction alarm"
   },
   {
    "ref": "MI 4",
    "name": "MalfunctionCode_XXX",
    "why": "Daikin malfunction code"
   },
   {
    "ref": "BI 20",
    "name": "CommunicationStatus_XXX",
    "why": "Communication error with the unit"
   }
  ],
  "enable": "There is no separate enable: the BMS writes the command objects directly. Remote-controller lockouts are available per group (RemoteControlStart, RemoteControlAirConModeSet, RemoteControlTempAdjust = Prohibit), and CL_Rejection (only on 000/064/128/192) disables Daikin centralized controllers on that DIII-Net line. SystemForcedOff stops all units on a DIII-Net line and blocks remote-controller starts; clearing it does not restart the units, so the BMS (or another controller) must start them again.",
  "heartbeat": null,
  "remote_sensors": null,
  "setup": [
   "BACnet/IP port factory setting 47808 (settable 1-65535).",
   "Can register as a BACnet foreign device when a BBMD is on another subnet.",
   "After power-up the interface needs about one minute to discover indoor units; reads return UNKNOWN_OBJECT until then.",
   "The interface can communicate with at most 100 BACnet networks."
  ],
  "gotchas": [
   "Setpoint, On/Off, mode, airflow direction and fan speed are stored in indoor-unit non-volatile memory with a write-count limit; avoid cyclic writes.",
   "Out-of-range setpoints are rounded to the unit's min/max, and F/C conversion can return a value slightly different from what was written; do not keep resending until they match.",
   "Room temperature from the return air sensor can be skewed when the fan is off or during defrost; treat it as a reference only.",
   "Daikin centralized controllers keep the ability to change on/off, mode and setpoint unless CL_Rejection is active."
  ]
 },
 "points": [
  {
   "type": "BO",
   "instance": 1,
   "name": "StartStopCommand_XXX",
   "description": "On/Off setting",
   "units": "",
   "access": "C",
   "states": "Inactive=Off, Active=On"
  },
  {
   "type": "BI",
   "instance": 2,
   "name": "StartStopStatus_XXX",
   "description": "On/Off status",
   "units": "",
   "access": "R",
   "states": "Inactive=Off, Active=On"
  },
  {
   "type": "BI",
   "instance": 3,
   "name": "Alarm_XXX",
   "description": "Alarm",
   "units": "",
   "access": "R",
   "states": "Inactive=Normal, Active=Malfunction"
  },
  {
   "type": "MI",
   "instance": 4,
   "name": "MalfunctionCode_XXX",
   "description": "Malfunction code",
   "units": "",
   "access": "R",
   "states": "1=Normal, other states=Daikin-specified malfunction code"
  },
  {
   "type": "MO",
   "instance": 5,
   "name": "AirConModeCommand_XXX",
   "description": "Operation mode setting",
   "units": "",
   "access": "C",
   "states": "1=Cool, 2=Heat, 3=Fan, 4=Auto, 5=Dry"
  },
  {
   "type": "MI",
   "instance": 6,
   "name": "AirConModeStatus_XXX",
   "description": "Operation mode status",
   "units": "",
   "access": "R",
   "states": "1=Cool, 2=Heat, 3=Fan, 4=not used, 5=Dry"
  },
  {
   "type": "MO",
   "instance": 7,
   "name": "AirFlowRateCommand_XXX",
   "description": "Fan speed setting",
   "units": "",
   "access": "C",
   "states": "1=Low, 2=High, 3=Middle, 4=Auto"
  },
  {
   "type": "MI",
   "instance": 8,
   "name": "AirFlowRateStatus_XXX",
   "description": "Fan speed status",
   "units": "",
   "access": "R",
   "states": "1=Low, 2=High, 3=Middle, 4=Auto"
  },
  {
   "type": "AI",
   "instance": 9,
   "name": "RoomTemp_XXX",
   "description": "Measured room temperature",
   "units": "°C/°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 10,
   "name": "TempAdjust_XXX",
   "description": "Setpoint",
   "units": "°C/°F",
   "access": "W",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 11,
   "name": "FilterSign_XXX",
   "description": "Filter sign signal",
   "units": "",
   "access": "R",
   "states": "Inactive=No, Active=Yes"
  },
  {
   "type": "BV",
   "instance": 12,
   "name": "FilterSignReset_XXX",
   "description": "Filter sign signal reset",
   "units": "",
   "access": "W",
   "states": "Reset"
  },
  {
   "type": "BV",
   "instance": 13,
   "name": "RemoteControlStart_XXX",
   "description": "Remote controller permit/prohibit (On/Off)",
   "units": "",
   "access": "W",
   "states": "Inactive=Permit, Active=Prohibit"
  },
  {
   "type": "BV",
   "instance": 14,
   "name": "RemoteControlAirConModeSet_XXX",
   "description": "Remote controller permit/prohibit (operation mode)",
   "units": "",
   "access": "W",
   "states": "Inactive=Permit, Active=Prohibit"
  },
  {
   "type": "BV",
   "instance": 16,
   "name": "RemoteControlTempAdjust_XXX",
   "description": "Remote controller permit/prohibit (setpoint)",
   "units": "",
   "access": "W",
   "states": "Inactive=Permit, Active=Prohibit"
  },
  {
   "type": "BV",
   "instance": 17,
   "name": "CL_Rejection_XXX",
   "description": "Centralized control (lower central control disable)",
   "units": "",
   "access": "W",
   "states": "Inactive=Enabled, Active=Disabled"
  },
  {
   "type": "ACC",
   "instance": 18,
   "name": "GasTotalPower_XXX",
   "description": "Accumulated gas",
   "units": "m3",
   "access": "R",
   "states": ""
  },
  {
   "type": "ACC",
   "instance": 19,
   "name": "ElecTotalPower_XXX",
   "description": "Accumulated power",
   "units": "kWh",
   "access": "R",
   "states": ""
  },
  {
   "type": "BI",
   "instance": 20,
   "name": "CommunicationStatus_XXX",
   "description": "Communication status",
   "units": "",
   "access": "R",
   "states": "Inactive=Normal, Active=Communication error"
  },
  {
   "type": "BV",
   "instance": 21,
   "name": "SystemForcedOff_XXX",
   "description": "Forced system stop",
   "units": "",
   "access": "W",
   "states": "Inactive=Inactive, Active=Active"
  },
  {
   "type": "AV",
   "instance": 22,
   "name": "AirDirectionCommand_XXX",
   "description": "Airflow direction setting",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AI",
   "instance": 23,
   "name": "AirDirectionStatus_XXX",
   "description": "Airflow direction status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BO",
   "instance": 24,
   "name": "ForcedThermoOFFCommand_XXX",
   "description": "Forced thermo-off setting",
   "units": "",
   "access": "C",
   "states": "Inactive=Inactive, Active=Active"
  },
  {
   "type": "BI",
   "instance": 25,
   "name": "ForcedThermoOFFStatus_XXX",
   "description": "Forced thermo-off status",
   "units": "",
   "access": "R",
   "states": "Inactive=Inactive, Active=Active"
  },
  {
   "type": "BO",
   "instance": 26,
   "name": "EnergyEfficiencyCommand_XXX",
   "description": "Energy saving setting",
   "units": "",
   "access": "C",
   "states": "Inactive=Inactive, Active=Active"
  },
  {
   "type": "BI",
   "instance": 27,
   "name": "EnergyEfficiencyStatus_XXX",
   "description": "Energy saving status",
   "units": "",
   "access": "R",
   "states": "Inactive=Inactive, Active=Active"
  },
  {
   "type": "BI",
   "instance": 28,
   "name": "ThermoStatus_XXX",
   "description": "Thermo-on status",
   "units": "",
   "access": "R",
   "states": "Inactive=Off, Active=On"
  },
  {
   "type": "BI",
   "instance": 29,
   "name": "CompressorStatus_XXX",
   "description": "Compressor status",
   "units": "",
   "access": "R",
   "states": "Inactive=Off, Active=On"
  },
  {
   "type": "BI",
   "instance": 30,
   "name": "IndoorFanStatus_XXX",
   "description": "Indoor fan status",
   "units": "",
   "access": "R",
   "states": "Inactive=Off, Active=On"
  },
  {
   "type": "BI",
   "instance": 31,
   "name": "HeaterStatus_XXX",
   "description": "Heater status",
   "units": "",
   "access": "R",
   "states": "Inactive=Off, Active=On"
  },
  {
   "type": "MO",
   "instance": 32,
   "name": "VentilationModeCommand_XXX",
   "description": "Ventilation mode setting (ERV)",
   "units": "",
   "access": "C",
   "states": "1=Bypass, 2=ERV, 3=Auto"
  },
  {
   "type": "MI",
   "instance": 33,
   "name": "VentilationModeStatus_XXX",
   "description": "Ventilation mode status (ERV)",
   "units": "",
   "access": "R",
   "states": "1=Bypass, 2=ERV, 3=Auto"
  },
  {
   "type": "MO",
   "instance": 34,
   "name": "VentilationAmountCommand_XXX",
   "description": "Ventilation amount setting (ERV)",
   "units": "",
   "access": "C",
   "states": "1=Low, 2=High, 3=Auto, 4=Low (fresh up), 5=High (fresh up), 6=Auto (fresh up)"
  },
  {
   "type": "MI",
   "instance": 35,
   "name": "VentilationAmountStatus_XXX",
   "description": "Ventilation amount status (ERV)",
   "units": "",
   "access": "R",
   "states": "1=Low, 2=High, 3=Auto, 4=Low (fresh up), 5=High (fresh up), 6=Auto (fresh up)"
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/daikin/dms502b71",
 "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"
}