{
 "manufacturer": "York",
 "manufacturer_slug": "york",
 "model": "YSAA Air-Cooled Screw Chiller - BAS (ISN) E-Link (YorkTalk 2)",
 "model_slug": "ysaa-e-link",
 "short_model": "YSAA E-Link",
 "aliases": [
  "YORK YSAA",
  "YSAA BAS",
  "E-Link",
  "eLink",
  "YorkTalk 2",
  "031-02550"
 ],
 "equipment_type": "Air-cooled screw chiller (via E-Link gateway)",
 "applies_to": "YORK YSAA air-cooled screw chillers (board 031-02550), connected through a YORK E-Link gateway over YorkTalk 2.",
 "summary": "The E-Link gateway reads the YSAA board over YorkTalk 2 (4800 baud) and serves BACnet, N2, LON and Modbus objects named by YorkTalk page: remote setpoint and start/stop, chilled liquid and per-system refrigerant temperatures and pressures, run hours and timers, and status codes.",
 "bacnet_transport": [],
 "firmware": null,
 "default_device_instance": null,
 "access_inferred": false,
 "notes": [
  "This is a YorkTalk 2 E-Link sheet; objects are named by YorkTalk page (YT2_S01_P03 and so on), and only populated slots not marked unavailable on every version are listed.",
  "Access follows the sheet's Modbus function note: the remote slots AV 1-4 and BV 1-4 accept writes; the rest are read-only.",
  "Multistate states are shown as printed (from 0); this sheet does not say whether the BACnet value adds 1, so confirm by discovery (read the state text).",
  "Some slots carry a second meaning for other unit types (for example SP units); only the meaning available on this sheet's versions is kept."
 ],
 "source": {
  "title": "YSAA BAS (ISN) E-Link points list",
  "doc_number": null,
  "revision_date": "2018-01-12",
  "url": "https://docs.johnsoncontrols.com/chillers/api/khub/documents/xvSi0e3Kwnf7B~5daaWaOw/content"
 },
 "integration": {
  "summary": "Put the chiller in remote/ISN control at the panel, then start and stop it with the E-Link remote run/stop object and write the remote setpoint and current limit. Read the operating, safety and warning codes, run status and water temperatures.",
  "minimum_points": [
   {
    "ref": "BV 1",
    "name": "YT2_S01_P07",
    "why": "Remote start/stop (1 = run)"
   },
   {
    "ref": "AV 1",
    "name": "YT2_S01_P03",
    "why": "Remote leaving chilled liquid setpoint"
   },
   {
    "ref": "BV 21",
    "name": "YT2_S01_P52",
    "why": "Must read Remote (1) for BMS control"
   },
   {
    "ref": "MV 1",
    "name": "YT2_S01_P56",
    "why": "System 1 operating code"
   },
   {
    "ref": "AV 5",
    "name": "YT2_S01_P11",
    "why": "Leaving chilled liquid temperature"
   },
   {
    "ref": "AV 6",
    "name": "YT2_S01_P12",
    "why": "Entering chilled liquid temperature"
   },
   {
    "ref": "MV 2",
    "name": "YT2_S01_P57",
    "why": "System 1 fault code"
   },
   {
    "ref": "BV 5",
    "name": "YT2_S01_P36",
    "why": "System 1 alarm (1 = alarm)"
   }
  ],
  "enable": "The E-Link remote slots (AV 1-4, BV 1-4) are the BMS commands; the chiller panel must be set for remote (ISN/BAS) control for them to take effect.",
  "heartbeat": null,
  "remote_sensors": null,
  "setup": [
   "The E-Link gateway talks to the chiller microboard over YorkTalk 2 and serves BACnet, N2, LON and Modbus; BACnet addressing is set on the E-Link.",
   "Check the chiller program version against the sheet's version table; availability codes (S/O/N) are per version."
  ],
  "gotchas": [
   "Points marked optional (O) on the sheet report only on units with that option or program version."
  ]
 },
 "points": [
  {
   "type": "AV",
   "instance": 1,
   "name": "YT2_S01_P03",
   "description": "Remote Setpoint",
   "units": "°F",
   "access": "W",
   "states": "99=Auto"
  },
  {
   "type": "BV",
   "instance": 1,
   "name": "YT2_S01_P07",
   "description": "Start/Stop Command",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 4,
   "name": "YT2_S01_P10",
   "description": "History Buffer Request",
   "units": "",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 5,
   "name": "YT2_S01_P11",
   "description": "Leaving Chilled Liquid Temp",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 6,
   "name": "YT2_S01_P12",
   "description": "Entering Chilled Liquid Temp",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 7,
   "name": "YT2_S01_P13",
   "description": "Evaporator Liquid Temp",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 9,
   "name": "YT2_S01_P15",
   "description": "Sys 1 Suction Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 10,
   "name": "YT2_S01_P16",
   "description": "Ambient Air Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 11,
   "name": "YT2_S01_P17",
   "description": "Sys 1 Suction Superheat",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 12,
   "name": "YT2_S01_P18",
   "description": "Sys 1 Run Time in seconds",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 13,
   "name": "YT2_S01_P19",
   "description": "Sys 1 Suction Pressure",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 14,
   "name": "YT2_S01_P20",
   "description": "Sys 1 Discharge Pressure",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 16,
   "name": "YT2_S01_P22",
   "description": "Sys 1 Run Hours",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 17,
   "name": "YT2_S01_P23",
   "description": "Sys 1 EEV Output % (EEV)",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 18,
   "name": "YT2_S01_P24",
   "description": "Sys 1 Anti-Recycle Timer in seconds",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 19,
   "name": "YT2_S01_P25",
   "description": "Anti-Coincident Timer in seconds",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 20,
   "name": "YT2_S01_P26",
   "description": "Sys 2 Suction Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 21,
   "name": "YT2_S01_P27",
   "description": "Sys 2 Run Time in seconds",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 22,
   "name": "YT2_S01_P28",
   "description": "Sys 2 Suction Pressure",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 23,
   "name": "YT2_S01_P29",
   "description": "Sys 2 Discharge Pressure",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 25,
   "name": "YT2_S01_P31",
   "description": "Sys 2 Run Hours",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 26,
   "name": "YT2_S01_P32",
   "description": "Sys 2 Suction Superheat",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 27,
   "name": "YT2_S01_P33",
   "description": "Sys 2 Anti-Recycle Timer in seconds",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 28,
   "name": "YT2_S01_P34",
   "description": "Sys 2 EEV Output %",
   "units": "%",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 5,
   "name": "YT2_S01_P36",
   "description": "Sys 1 Alarm",
   "units": "",
   "access": "R",
   "states": "0=No Alarm, 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 6,
   "name": "YT2_S01_P37",
   "description": "Sys 2 Alarm",
   "units": "",
   "access": "R",
   "states": "0=No Alarm, 1=Alarm"
  },
  {
   "type": "BV",
   "instance": 7,
   "name": "YT2_S01_P38",
   "description": "Evaporator Heater Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 8,
   "name": "YT2_S01_P39",
   "description": "Evaporator Pump Status",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 9,
   "name": "YT2_S01_P40",
   "description": "Sys 1 Comp Run",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 10,
   "name": "YT2_S01_P41",
   "description": "Sys 1 SV Min Load",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 11,
   "name": "YT2_S01_P42",
   "description": "Sys 1 SV Load",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 12,
   "name": "YT2_S01_P43",
   "description": "Sys 1 SV Unload",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 13,
   "name": "YT2_S01_P44",
   "description": "Sys 2 Comp Run",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 14,
   "name": "YT2_S01_P45",
   "description": "Sys 2 SV Min Load",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 15,
   "name": "YT2_S01_P46",
   "description": "Sys 2 SV Load",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 16,
   "name": "YT2_S01_P47",
   "description": "Sys 2 SV Unload",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 19,
   "name": "YT2_S01_P50",
   "description": "Chilled Liquid Type",
   "units": "",
   "access": "R",
   "states": "0=Water, 1=Glycol"
  },
  {
   "type": "BV",
   "instance": 20,
   "name": "YT2_S01_P51",
   "description": "Lead System",
   "units": "",
   "access": "R",
   "states": "0=Sys1, 1=Sys2"
  },
  {
   "type": "BV",
   "instance": 21,
   "name": "YT2_S01_P52",
   "description": "Local/Remote Control Mode",
   "units": "",
   "access": "R",
   "states": "0=Local, 1=Remote"
  },
  {
   "type": "BV",
   "instance": 22,
   "name": "YT2_S01_P53",
   "description": "Units",
   "units": "",
   "access": "R",
   "states": "0=Imperial, 1=SI"
  },
  {
   "type": "BV",
   "instance": 23,
   "name": "YT2_S01_P54",
   "description": "Lead/Lag Control Mode",
   "units": "",
   "access": "R",
   "states": "0=Manual, 1=Auto"
  },
  {
   "type": "MV",
   "instance": 1,
   "name": "YT2_S01_P56",
   "description": "Sys 1 Operational Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 2,
   "name": "YT2_S01_P57",
   "description": "Sys 1 Fault Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 3,
   "name": "YT2_S01_P58",
   "description": "Sys 2 Operational Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 4,
   "name": "YT2_S01_P59",
   "description": "Sys 2 Fault Code",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 6,
   "name": "YT2_S01_P61",
   "description": "Sys 1 Condenser Fan Stage",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "MV",
   "instance": 8,
   "name": "YT2_S01_P63",
   "description": "Sys 2 Condenser Fan Stage",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 30,
   "name": "YT2_S01_P66",
   "description": "Anti-Recycle Time Programmed",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 31,
   "name": "YT2_S01_P67",
   "description": "Leaving Chilled Liquid Temp Cutout",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 32,
   "name": "YT2_S01_P68",
   "description": "Low Ambient Temp Cutout",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 34,
   "name": "YT2_S01_P70",
   "description": "Low Suction Pressure Cutout Cooling",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 35,
   "name": "YT2_S01_P71",
   "description": "High Discharge Pressure Cutout",
   "units": "psi",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 36,
   "name": "YT2_S01_P72",
   "description": "Remote Setpoint",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 37,
   "name": "YT2_S01_P73",
   "description": "Cooling Range",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 40,
   "name": "YT2_S01_P76",
   "description": "Sys 1 Discharge Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 41,
   "name": "YT2_S01_P77",
   "description": "Sys 1 Discharge Superheat",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 42,
   "name": "YT2_S01_P78",
   "description": "Sys 2 Discharge Temperature",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 43,
   "name": "YT2_S01_P79",
   "description": "Sys 2 Discharge Superheat",
   "units": "°F",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 29,
   "name": "YT2_S01_P84",
   "description": "SCC Auto Detect Available",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 105,
   "name": "YT2_S02_P36",
   "description": "Option Indicator",
   "units": "",
   "access": "R",
   "states": "0=Disabled, 1=Enabled"
  },
  {
   "type": "BV",
   "instance": 119,
   "name": "YT2_S02_P50",
   "description": "SCC Auto Detect Digit 1",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 120,
   "name": "YT2_S02_P51",
   "description": "SCC Auto Detect Digit 2",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 121,
   "name": "YT2_S02_P52",
   "description": "SCC Auto Detect Digit 3",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 122,
   "name": "YT2_S02_P53",
   "description": "SCC Auto Detect Digit 4",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 123,
   "name": "YT2_S02_P54",
   "description": "SCC Auto Detect Digit 5",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 124,
   "name": "YT2_S02_P55",
   "description": "SCC Auto Detect Digit 6",
   "units": "",
   "access": "R",
   "states": ""
  },
  {
   "type": "BV",
   "instance": 129,
   "name": "YT2_S02_P84",
   "description": "Units",
   "units": "",
   "access": "R",
   "states": "0=Imperial, 1=Metric"
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/york/ysaa-e-link",
 "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"
}