{
 "manufacturer": "Greystone Energy Systems",
 "manufacturer_slug": "greystone",
 "model": "UP Series ultra-low pressure transducer (BACnet MS/TP)",
 "model_slug": "up-ultra-low-pressure-transducer",
 "aliases": [
  "UP",
  "UPB",
  "UPXXXBAC",
  "Greystone ultra low differential pressure"
 ],
 "equipment_type": "Ultra-low differential pressure sensor / transducer",
 "applies_to": "Greystone UP series ultra-low differential pressure transducers with BACnet MS/TP.",
 "summary": "The UP Series is a Greystone ultra-low differential pressure transducer with native BACnet MS/TP. Pressure is one Analog Input; averaging time, alarm limits, alarm delays and backlight mode are Analog Values; Binary Values set alarm enable/test, units and trigger an auto-zero, and three Binary Inputs report the alarms.",
 "bacnet_transport": [
  "BACnet MS/TP"
 ],
 "firmware": null,
 "default_device_instance": 381003,
 "access_inferred": false,
 "notes": [
  "Points from the object list on page 1 of the setup guide.",
  "Alarm limit defaults are 75 % and 25 % of the selected range; pressure values follow BV 3 (in. w.c. or Pa).",
  "Auto zero only works in normal mode and within ±7.5 % of full scale; BV 4 returns to 0 after a few seconds.",
  "Access from the object pages: AV and BV Present_Value are read/write."
 ],
 "source": {
  "title": "UP Series Ultra Low Pressure Transducer - Setup Guide BACnet Communication",
  "doc_number": "SG-UPXXXBAC-01-01",
  "revision_date": "11/18",
  "url": "https://downloads.greystoneenergy.com/Website%20Documents/UP/SG-UPXXXBAC-01.pdf"
 },
 "integration": {
  "summary": "Set the MS/TP MAC in the menu, choose units, then read pressure (AI 1) and the alarm BIs. Alarm limits and delays are set once.",
  "minimum_points": [
   {
    "ref": "AI 1",
    "name": "Pressure Sensor Value",
    "why": "Differential pressure"
   },
   {
    "ref": "BI 1",
    "name": "Alarm Status",
    "why": "Any pressure alarm"
   },
   {
    "ref": "BI 2",
    "name": "Low Alarm Status",
    "why": "Low pressure alarm"
   },
   {
    "ref": "BI 3",
    "name": "High Alarm Status",
    "why": "High pressure alarm"
   }
  ],
  "enable": null,
  "heartbeat": null,
  "remote_sensors": null,
  "setup": [
   "Device instance defaults to 381003 (381000 + MAC); it stops following the MAC once written over BACnet."
  ],
  "gotchas": [
   "Only auto-zero (BV 4) when the actual pressure is near zero."
  ]
 },
 "points": [
  {
   "type": "AI",
   "instance": 1,
   "name": "Pressure Sensor Value",
   "description": "Pressure in the selected units",
   "units": "Pa / in. w.c.",
   "access": "R",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 1,
   "name": "Pressure Averaging Time",
   "description": "Reading averaging time, 1-60 s (default 5)",
   "units": "s",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 2,
   "name": "Alarm High Limit",
   "description": "High pressure alarm limit (default 75 % of range)",
   "units": "Pa / in. w.c.",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 3,
   "name": "Alarm Low Limit",
   "description": "Low pressure alarm limit (default 25 % of range)",
   "units": "Pa / in. w.c.",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 4,
   "name": "Alarm On Delay",
   "description": "Alarm on delay, 1-600 s (default 5)",
   "units": "s",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 5,
   "name": "Alarm Off Delay",
   "description": "Alarm off delay, 1-600 s (default 5)",
   "units": "s",
   "access": "W",
   "states": ""
  },
  {
   "type": "AV",
   "instance": 6,
   "name": "Backlight Mode",
   "description": "LCD backlight (default Auto)",
   "units": "",
   "access": "W",
   "states": "0=Off, 1=On, 2=Auto"
  },
  {
   "type": "BV",
   "instance": 1,
   "name": "Alarm Enable",
   "description": "Alarm functions enable",
   "units": "",
   "access": "W",
   "states": "0=Alarm Disable, 1=Alarm Enable"
  },
  {
   "type": "BV",
   "instance": 2,
   "name": "Alarm Test",
   "description": "Alarm test; write back to 0 afterwards",
   "units": "",
   "access": "W",
   "states": "0=Normal Operation, 1=Alarm Test"
  },
  {
   "type": "BV",
   "instance": 3,
   "name": "Pressure Units",
   "description": "Pressure units",
   "units": "",
   "access": "W",
   "states": "0=in. w.c., 1=Pa"
  },
  {
   "type": "BV",
   "instance": 4,
   "name": "Auto Zero",
   "description": "Write 1 to zero the sensor; resets itself",
   "units": "",
   "access": "W",
   "states": "0=Normal, 1=Perform zero cal"
  },
  {
   "type": "BI",
   "instance": 1,
   "name": "Alarm Status",
   "description": "Any pressure alarm",
   "units": "",
   "access": "R",
   "states": "0=No Alarm, 1=Pressure Alarm"
  },
  {
   "type": "BI",
   "instance": 2,
   "name": "Low Alarm Status",
   "description": "Low pressure alarm",
   "units": "",
   "access": "R",
   "states": "0=No Low Alarm, 1=Low Alarm"
  },
  {
   "type": "BI",
   "instance": 3,
   "name": "High Alarm Status",
   "description": "High pressure alarm",
   "units": "",
   "access": "R",
   "states": "0=No High Alarm, 1=High Alarm"
  }
 ],
 "page": "https://easybacnet.com/bacnet-points-lists/greystone/up-ultra-low-pressure-transducer",
 "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"
}