{
 "mbmap": 2,
 "vendor": "Stiebel Eltron",
 "model": "ISG web / ISG plus",
 "models": [
  "ISG web",
  "ISG plus"
 ],
 "vendor_website": "stiebel-eltron.com",
 "description": "Internet Service Gateway ISG web and ISG plus with the Modbus TCP/IP software extension: heat pump manager WPM 3 and WPM 3i system values, parameters, status and energy data",
 "revision": 1,
 "revised": "2026-11-10",
 "source": "Stiebel Eltron, Software documentation Modbus TCP/IP (Software extension for Internet Service Gateway), WPM 3 / WPM 3i chapter and chapter 10",
 "sources": [
  {
   "title": "Software documentation Modbus TCP/IP: Software extension for Internet Service Gateway",
   "date": "2026-06",
   "url": "https://www.stiebel-eltron.com/content/dam/ste/cdbassets/current/commissioning_manual/commissioning_manual_doc-00081716.pdf",
   "note": "linked in issue #200; chapter 7 (WPM 3 and WPM 3i), chapter 10 (SG Ready); no version is printed, the PDF was generated in June 2026"
  }
 ],
 "notes": [
  "Addresses are the numbers of the manufacturer's tables (for example 501 for 30501). The document says the ISG is one-based and that an offset of 1 may be needed depending on the client, so address_base is 1: the address on the wire is the number minus 1. If a read returns the neighbouring value, try address_base 0.",
  "The register tables differ per controller: the manufacturer publishes separate tables for WPMsystem, WPM 3 / WPM 3i, LWZ (05.1, 07.1) Plus (ISG Connect only), integral ventilation units and WPM G (WPE-I). This map follows only the WPM 3 / WPM 3i tables plus the SG Ready registers; the numbers in other tables can mean something else.",
  "Not every object exists on every device. An object that is not available reads 32768 (0x8000), shown here as a sentinel.",
  "Temperatures and most setpoints are integers with a 0.1 scale; the values with data type 7 (pressures, heating curve slope, volume flow) use 0.01. Energy totals are split: total energy = MWh register × 1000 + kWh register (0-999).",
  "The per-heat-pump values (addresses 542-583, 3523 onward), the cooling-circuit setpoints of WPMsystem, the fixed-value mode (1508), the reset registers (1520, 1521) and the power-limitation registers (4250 onward) are not in this map.",
  "Default connection: IP 192.168.0.126 when connected directly, TCP port 502, slave ID 1 (cannot be changed). Modbus TCP/IP needs the Basic service package and cannot be combined with other ISG software interfaces, apart from read access next to the EMI extension.",
  "Written from the manufacturer's document; not tested on a device."
 ],
 "protocol": "tcp",
 "unit_id": 1,
 "port": 502,
 "byte_order": "big",
 "word_order": "big",
 "address_base": 1,
 "x_status": "official",
 "enums": {
  "operating_mode": {
   "0": "Emergency operation",
   "1": "Standby",
   "2": "Program",
   "3": "Comfort",
   "4": "Eco",
   "5": "Hot water only"
  },
  "fault": {
   "0": "No fault",
   "1": "Fault"
  },
  "bus_status": {
   "0": "OK",
   "-1": "Fault",
   "-2": "Fault",
   "-3": "CAN error",
   "-4": "Line error"
  },
  "off_on": {
   "0": "Off",
   "1": "On"
  },
  "sg_input": {
   "0": "Not switched",
   "1": "Switched"
  },
  "sg_state": {
   "1": "1: no start, frost protection only",
   "2": "2: normal operation",
   "3": "3: forced operation, raised heating/hot water temperatures",
   "4": "4: maximum heating and hot water temperatures"
  }
 },
 "sentinels": {
  "int16": {
   "-32768": "Not available"
  },
  "uint16": {
   "0x8000": "Not available"
  }
 },
 "registers": [
  {
   "name": "Actual temperature FE7",
   "group": "System values",
   "area": "input",
   "address": 501,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Setpoint temperature FE7",
   "group": "System values",
   "area": "input",
   "address": 502,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Actual temperature FEK",
   "group": "System values",
   "area": "input",
   "address": 503,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Setpoint temperature FEK",
   "group": "System values",
   "area": "input",
   "address": 504,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Room humidity",
   "group": "System values",
   "area": "input",
   "address": 505,
   "type": "int16",
   "scale": 0.1,
   "unit": "%",
   "access": "R"
  },
  {
   "name": "Dew point temperature",
   "group": "System values",
   "area": "input",
   "address": 506,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Outside temperature",
   "group": "System values",
   "area": "input",
   "address": 507,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Actual temperature heating circuit 1",
   "group": "System values",
   "area": "input",
   "address": 508,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Setpoint temperature heating circuit 1 (WPM 3i)",
   "group": "System values",
   "area": "input",
   "address": 509,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "Only WPM 3i; WPM 3 uses address 510"
  },
  {
   "name": "Setpoint temperature heating circuit 1 (WPM 3)",
   "group": "System values",
   "area": "input",
   "address": 510,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "Only WPM 3; WPM 3i uses address 509"
  },
  {
   "name": "Actual temperature heating circuit 2",
   "group": "System values",
   "area": "input",
   "address": 511,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Setpoint temperature heating circuit 2",
   "group": "System values",
   "area": "input",
   "address": 512,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Flow temperature, heat pump",
   "group": "System values",
   "area": "input",
   "address": 513,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "Only with a flow/return module (MFG)"
  },
  {
   "name": "Flow temperature, booster heater",
   "group": "System values",
   "area": "input",
   "address": 514,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "Only with a flow/return module (MFG)"
  },
  {
   "name": "Return temperature",
   "group": "System values",
   "area": "input",
   "address": 516,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Fixed setpoint temperature",
   "group": "System values",
   "area": "input",
   "address": 517,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Buffer actual temperature",
   "group": "System values",
   "area": "input",
   "address": 518,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Buffer setpoint temperature",
   "group": "System values",
   "area": "input",
   "address": 519,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Heating pressure",
   "group": "System values",
   "area": "input",
   "address": 520,
   "type": "int16",
   "scale": 0.01,
   "unit": "bar",
   "access": "R",
   "description": "Only with a flow/return module (MFG)"
  },
  {
   "name": "Volume flow",
   "group": "System values",
   "area": "input",
   "address": 521,
   "type": "int16",
   "scale": 0.01,
   "unit": "l/min",
   "access": "R",
   "description": "Only with a flow/return module (MFG). The older document revisions list this with one decimal (scale 0.1); the current one lists two decimals"
  },
  {
   "name": "Hot water actual temperature",
   "group": "System values",
   "area": "input",
   "address": 522,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Hot water setpoint temperature",
   "group": "System values",
   "area": "input",
   "address": 523,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Cooling fan actual temperature",
   "group": "System values",
   "area": "input",
   "address": 524,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "Cooling"
  },
  {
   "name": "Cooling fan setpoint temperature",
   "group": "System values",
   "area": "input",
   "address": 525,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "Cooling"
  },
  {
   "name": "Cooling surface actual temperature",
   "group": "System values",
   "area": "input",
   "address": 526,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "Cooling"
  },
  {
   "name": "Cooling surface setpoint temperature",
   "group": "System values",
   "area": "input",
   "address": 527,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "Cooling"
  },
  {
   "name": "Solar collector temperature",
   "group": "System values",
   "area": "input",
   "address": 528,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Solar buffer temperature",
   "group": "System values",
   "area": "input",
   "address": 529,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Solar runtime",
   "group": "System values",
   "area": "input",
   "address": 530,
   "type": "uint16",
   "scale": 1,
   "unit": "h",
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "External heat generator actual temperature",
   "group": "System values",
   "area": "input",
   "address": 531,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "External heat generator setpoint temperature",
   "group": "System values",
   "area": "input",
   "address": 532,
   "type": "int16",
   "scale": 0.1,
   "unit": "K",
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Heating operating limit",
   "group": "System values",
   "area": "input",
   "address": 533,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "Lower outside-temperature limit for heating"
  },
  {
   "name": "Hot water operating limit",
   "group": "System values",
   "area": "input",
   "address": 534,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "Lower outside-temperature limit for hot water"
  },
  {
   "name": "External heat generator runtime",
   "group": "System values",
   "area": "input",
   "address": 535,
   "type": "uint16",
   "scale": 1,
   "unit": "h",
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Source temperature",
   "group": "System values",
   "area": "input",
   "address": 536,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Source temperature, minimum",
   "group": "System values",
   "area": "input",
   "address": 537,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R"
  },
  {
   "name": "Source pressure",
   "group": "System values",
   "area": "input",
   "address": 538,
   "type": "int16",
   "scale": 0.01,
   "unit": "bar",
   "access": "R"
  },
  {
   "name": "Hot gas temperature",
   "group": "System values",
   "area": "input",
   "address": 539,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "R",
   "description": "WPM 3i only"
  },
  {
   "name": "High pressure",
   "group": "System values",
   "area": "input",
   "address": 540,
   "type": "int16",
   "scale": 0.1,
   "unit": "bar",
   "access": "R",
   "description": "WPM 3i only"
  },
  {
   "name": "Low pressure",
   "group": "System values",
   "area": "input",
   "address": 541,
   "type": "int16",
   "scale": 0.1,
   "unit": "bar",
   "access": "R",
   "description": "WPM 3i only"
  },
  {
   "name": "Operating mode",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1501,
   "type": "uint16",
   "access": "RW",
   "enum": "operating_mode",
   "write_min": 0,
   "write_max": 5
  },
  {
   "name": "Comfort temperature, heating circuit 1",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1502,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "description": "Room setpoint for heating",
   "write_min": 5,
   "write_max": 30
  },
  {
   "name": "Eco temperature, heating circuit 1",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1503,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "description": "Room setpoint for heating",
   "write_min": 5,
   "write_max": 30
  },
  {
   "name": "Heating curve slope, heating circuit 1",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1504,
   "type": "int16",
   "scale": 0.01,
   "access": "RW",
   "write_min": 0,
   "write_max": 3
  },
  {
   "name": "Comfort temperature, heating circuit 2",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1505,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "description": "Room setpoint for heating",
   "write_min": 5,
   "write_max": 30
  },
  {
   "name": "Eco temperature, heating circuit 2",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1506,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "description": "Room setpoint for heating",
   "write_min": 5,
   "write_max": 30
  },
  {
   "name": "Heating curve slope, heating circuit 2",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1507,
   "type": "int16",
   "scale": 0.01,
   "access": "RW",
   "write_min": 0,
   "write_max": 3
  },
  {
   "name": "Heating bivalence temperature",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1509,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "description": "Mind the operating limits of the heat pump",
   "write_min": -40,
   "write_max": 40
  },
  {
   "name": "Hot water comfort temperature",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1510,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "write_min": 10,
   "write_max": 60
  },
  {
   "name": "Hot water eco temperature",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1511,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "write_min": 10,
   "write_max": 60
  },
  {
   "name": "Hot water stages",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1512,
   "type": "uint16",
   "access": "RW",
   "description": "Mind the number of connected heat pumps",
   "write_min": 0,
   "write_max": 6
  },
  {
   "name": "Hot water bivalence temperature",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1513,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "write_min": -40,
   "write_max": 40
  },
  {
   "name": "Surface cooling flow setpoint",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1514,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "write_min": 7,
   "write_max": 25
  },
  {
   "name": "Cooling flow hysteresis",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1515,
   "type": "int16",
   "scale": 0.1,
   "unit": "K",
   "access": "RW",
   "description": "Cooling",
   "write_min": 1,
   "write_max": 5
  },
  {
   "name": "Surface cooling room setpoint",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1516,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "write_min": 20,
   "write_max": 30
  },
  {
   "name": "Fan cooling flow setpoint",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1517,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "write_min": 7,
   "write_max": 25
  },
  {
   "name": "Fan cooling flow hysteresis",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1518,
   "type": "int16",
   "scale": 0.1,
   "unit": "K",
   "access": "RW",
   "write_min": 1,
   "write_max": 5
  },
  {
   "name": "Fan cooling room setpoint",
   "group": "Operating modes and setpoints",
   "area": "holding",
   "address": 1519,
   "type": "int16",
   "scale": 0.1,
   "unit": "°C",
   "access": "RW",
   "write_min": 20,
   "write_max": 30
  },
  {
   "name": "Heating circuit 1 pump",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 0,
   "access": "R"
  },
  {
   "name": "Heating circuit 2 pump",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 1,
   "access": "R"
  },
  {
   "name": "Heat-up program active",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 2,
   "access": "R"
  },
  {
   "name": "Electric emergency/booster heating",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 3,
   "access": "R"
  },
  {
   "name": "Heating",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 4,
   "access": "R"
  },
  {
   "name": "Hot water heating",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 5,
   "access": "R"
  },
  {
   "name": "Compressor running",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 6,
   "access": "R"
  },
  {
   "name": "Summer mode",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 7,
   "access": "R"
  },
  {
   "name": "Cooling mode",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 8,
   "access": "R"
  },
  {
   "name": "Defrost",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 9,
   "access": "R"
  },
  {
   "name": "Silent mode 1",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 10,
   "access": "R",
   "description": "Status word; WPM 3i has no silent mode"
  },
  {
   "name": "Silent mode 2 (off)",
   "group": "System status",
   "area": "input",
   "address": 2501,
   "type": "bool",
   "bit": 11,
   "access": "R",
   "description": "Status word; WPM 3i has no silent mode"
  },
  {
   "name": "Utility lock released (EVU)",
   "group": "System status",
   "area": "input",
   "address": 2502,
   "type": "bool",
   "bit": 0,
   "access": "R"
  },
  {
   "name": "Compressor 1 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 0,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Compressor 2 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 1,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Compressor 3 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 2,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Compressor 4 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 3,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Compressor 5 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 4,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Compressor 6 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 5,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Buffer charge pump 1 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 6,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Buffer charge pump 2 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 7,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Buffer charge pump 3 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 8,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Buffer charge pump 4 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 9,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Buffer charge pump 5 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 10,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Buffer charge pump 6 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 11,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Booster heater 1 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 12,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Booster heater 2 running",
   "group": "System status",
   "area": "input",
   "address": 2503,
   "type": "bool",
   "bit": 13,
   "access": "R",
   "description": "WPM 3 only"
  },
  {
   "name": "Fatal fault",
   "group": "System status",
   "area": "input",
   "address": 2504,
   "type": "uint16",
   "access": "R",
   "enum": "fault",
   "description": "System fault flag; acknowledge faults only on the ISG service interface"
  },
  {
   "name": "Bus status",
   "group": "System status",
   "area": "input",
   "address": 2505,
   "type": "int16",
   "access": "R",
   "enum": "bus_status",
   "description": "Zero or negative; the document lists it as unsigned but gives negative values"
  },
  {
   "name": "Defrost initiated",
   "group": "System status",
   "area": "input",
   "address": 2506,
   "type": "uint16",
   "access": "R",
   "enum": "off_on",
   "description": "WPM 3 only"
  },
  {
   "name": "ISG version, extension",
   "group": "System status",
   "area": "input",
   "address": 2570,
   "type": "uint16",
   "access": "R"
  },
  {
   "name": "ISG version, major",
   "group": "System status",
   "area": "input",
   "address": 2571,
   "type": "uint16",
   "access": "R"
  },
  {
   "name": "ISG version, minor",
   "group": "System status",
   "area": "input",
   "address": 2572,
   "type": "uint16",
   "access": "R"
  },
  {
   "name": "ISG version, revision",
   "group": "System status",
   "area": "input",
   "address": 2573,
   "type": "uint16",
   "access": "R"
  },
  {
   "name": "Compressor heat output, all heat pumps, heating, today",
   "group": "Energy",
   "area": "input",
   "address": 3501,
   "type": "uint16",
   "unit": "kWh",
   "access": "R",
   "description": "Daily value"
  },
  {
   "name": "Compressor heat output, all heat pumps, heating, total (kWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3502,
   "type": "uint16",
   "unit": "kWh",
   "access": "R",
   "description": "Total = MWh part × 1000 + kWh part (kWh part 0-999)"
  },
  {
   "name": "Compressor heat output, all heat pumps, heating, total (MWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3503,
   "type": "uint16",
   "unit": "MWh",
   "access": "R",
   "description": "Total = MWh part × 1000 + kWh part"
  },
  {
   "name": "Compressor heat output, all heat pumps, hot water, today",
   "group": "Energy",
   "area": "input",
   "address": 3504,
   "type": "uint16",
   "unit": "kWh",
   "access": "R",
   "description": "Daily value"
  },
  {
   "name": "Compressor heat output, all heat pumps, hot water, total (kWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3505,
   "type": "uint16",
   "unit": "kWh",
   "access": "R",
   "description": "Total = MWh part × 1000 + kWh part (kWh part 0-999)"
  },
  {
   "name": "Compressor heat output, all heat pumps, hot water, total (MWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3506,
   "type": "uint16",
   "unit": "MWh",
   "access": "R",
   "description": "Total = MWh part × 1000 + kWh part"
  },
  {
   "name": "Booster heater heat output, heating, total (kWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3507,
   "type": "uint16",
   "unit": "kWh",
   "access": "R",
   "description": "All heat pumps; total = MWh part × 1000 + kWh part"
  },
  {
   "name": "Booster heater heat output, heating, total (MWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3508,
   "type": "uint16",
   "unit": "MWh",
   "access": "R",
   "description": "All heat pumps"
  },
  {
   "name": "Booster heater heat output, hot water, total (kWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3509,
   "type": "uint16",
   "unit": "kWh",
   "access": "R",
   "description": "All heat pumps; total = MWh part × 1000 + kWh part"
  },
  {
   "name": "Booster heater heat output, hot water, total (MWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3510,
   "type": "uint16",
   "unit": "MWh",
   "access": "R",
   "description": "All heat pumps"
  },
  {
   "name": "Compressor electrical consumption, all heat pumps, heating, today",
   "group": "Energy",
   "area": "input",
   "address": 3511,
   "type": "uint16",
   "unit": "kWh",
   "access": "R",
   "description": "Daily value"
  },
  {
   "name": "Compressor electrical consumption, all heat pumps, heating, total (kWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3512,
   "type": "uint16",
   "unit": "kWh",
   "access": "R",
   "description": "Total = MWh part × 1000 + kWh part (kWh part 0-999)"
  },
  {
   "name": "Compressor electrical consumption, all heat pumps, heating, total (MWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3513,
   "type": "uint16",
   "unit": "MWh",
   "access": "R",
   "description": "Total = MWh part × 1000 + kWh part"
  },
  {
   "name": "Compressor electrical consumption, all heat pumps, hot water, today",
   "group": "Energy",
   "area": "input",
   "address": 3514,
   "type": "uint16",
   "unit": "kWh",
   "access": "R",
   "description": "Daily value"
  },
  {
   "name": "Compressor electrical consumption, all heat pumps, hot water, total (kWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3515,
   "type": "uint16",
   "unit": "kWh",
   "access": "R",
   "description": "Total = MWh part × 1000 + kWh part (kWh part 0-999)"
  },
  {
   "name": "Compressor electrical consumption, all heat pumps, hot water, total (MWh part)",
   "group": "Energy",
   "area": "input",
   "address": 3516,
   "type": "uint16",
   "unit": "MWh",
   "access": "R",
   "description": "Total = MWh part × 1000 + kWh part"
  },
  {
   "name": "Compressor heating runtime",
   "group": "Energy",
   "area": "input",
   "address": 3517,
   "type": "uint16",
   "unit": "h",
   "access": "R",
   "description": "WPM 3i only"
  },
  {
   "name": "Compressor hot water runtime",
   "group": "Energy",
   "area": "input",
   "address": 3518,
   "type": "uint16",
   "unit": "h",
   "access": "R",
   "description": "WPM 3i only"
  },
  {
   "name": "Compressor cooling runtime",
   "group": "Energy",
   "area": "input",
   "address": 3519,
   "type": "uint16",
   "unit": "h",
   "access": "R",
   "description": "WPM 3i only"
  },
  {
   "name": "Booster heater 1 runtime",
   "group": "Energy",
   "area": "input",
   "address": 3520,
   "type": "uint16",
   "unit": "h",
   "access": "R",
   "description": "WPM 3i only"
  },
  {
   "name": "Booster heater 2 runtime",
   "group": "Energy",
   "area": "input",
   "address": 3521,
   "type": "uint16",
   "unit": "h",
   "access": "R",
   "description": "WPM 3i only"
  },
  {
   "name": "Booster heater 1/2 runtime",
   "group": "Energy",
   "area": "input",
   "address": 3522,
   "type": "uint16",
   "unit": "h",
   "access": "R",
   "description": "WPM 3i only"
  },
  {
   "name": "SG Ready enabled",
   "group": "Energy management",
   "area": "holding",
   "address": 4001,
   "type": "uint16",
   "access": "RW",
   "enum": "off_on",
   "write_min": 0,
   "write_max": 1,
   "description": "Switches the SG Ready function on or off"
  },
  {
   "name": "SG Ready input 1",
   "group": "Energy management",
   "area": "holding",
   "address": 4002,
   "type": "uint16",
   "access": "RW",
   "enum": "sg_input",
   "write_min": 0,
   "write_max": 1,
   "description": "Together with input 2 selects the operating state"
  },
  {
   "name": "SG Ready input 2",
   "group": "Energy management",
   "area": "holding",
   "address": 4003,
   "type": "uint16",
   "access": "RW",
   "enum": "sg_input",
   "write_min": 0,
   "write_max": 1
  },
  {
   "name": "SG Ready operating state",
   "group": "Energy management",
   "area": "input",
   "address": 5001,
   "type": "uint16",
   "access": "R",
   "enum": "sg_state"
  }
 ]
}