Weishaupt · Heat pump
Heat pumps (WWP) with WEM energy management module, Modbus TCP datapoint list Modbus register map
Default configuration
- Protocol
- Modbus TCP
- Port
- 502
- Unit ID
- 1
- Addressing
- 0-based
- Byte order
- Big endian
- Word order
- High word first
Register map
| Address | Count | Name | Type | Unit | Scale | Access |
|---|---|---|---|---|---|---|
| 0 | 1 | Outdoor temperature 1 Input register 30001. 0.1 °C resolution; -32768/-32767/-32766/-32758/-32757 are the sensor fault codes (no sensor, break, short circuit, digital status off/on). | Int16 | °C | 0.1 | R |
| 1 | 1 | Outdoor temperature 2 Input register 30002. Second outdoor sensor, same fault-code scheme as outdoor temperature 1. | Int16 | °C | 0.1 | R |
| 2 | 1 | Fault Input register 30003. Error code, 0...65534 = code from the connected device's code table, 65535 = no active error code. | UInt16 | - | 1 | R |
| 3 | 1 | Warning Input register 30004. Warning code, 0...65534 = code from the connected device's code table, 65535 = no active warning code. | UInt16 | - | 1 | R |
| 4 | 1 | No fault Input register 30005. 1 = no fault active, 0 = fault active, 2...65535 = undefined. | UInt16 | - | 1 | R |
| 5 | 1 | Operating status display Input register 30006. Operating status code; the document's value table lists 0...44 (undefined, relay test, emergency stop, diagnosis, manual mode, defrost, EVU lock, SG tariff, standby, heating, hot water, legionella protection, cooling, summer, holiday, screed, locked, readiness, regenerative, oil return, ...). | UInt16 | - | 1 | R |
| 2100 | 1 | Hot water setpoint temperature Input register 32101. -32768 = no setpoint request active, 1 = no setpoint request active, 50...5000 = 5.0...500.0 °C. | Int16 | °C | 0.1 | R |
| 2101 | 1 | Hot water temperature Input register 32102. -32768/-32767/-32766/-32758/-32757 are the sensor fault codes. | Int16 | °C | 0.1 | R |
| 3100 | 1 | Heat pump operating status Input register 33101. Operating status code; the document's value table lists 0...44 and is the same enumeration as the system operating status display. | UInt16 | - | 1 | R |
| 3101 | 1 | Heat pump fault message Input register 33102. 0 = fault active, 1 = fault-free operation, 2...65535 = undefined. | UInt16 | - | 1 | R |
| 3102 | 1 | Power request Input register 33103. 0...100 = 0...100 % power request; -32768 = no sensor (read as 32768 on the wire). | UInt16 | % | 1 | R |
| 3103 | 1 | Flow temperature Input register 33104. Sensor fault codes -32767/-32766/-32758/-32757 apply. | Int16 | °C | 0.1 | R |
| 3104 | 1 | Return temperature Input register 33105. Sensor fault codes -32768/-32767/-32766/-32758/-32757 apply. | Int16 | °C | 0.1 | R |
| 3107 | 1 | Hydraulic separator Input register 33108. Sensor fault codes apply. | Int16 | °C | 0.1 | R |
| 3108 | 1 | Regenerative Input register 33109. Regenerative source temperature; sensor fault codes apply. | Int16 | °C | 0.1 | R |
| 3109 | 1 | Buffer Input register 33110. Buffer tank temperature; sensor fault codes apply. | Int16 | °C | 0.1 | R |
| 3110 | 1 | Total flow (B7) Input register 33111. Sensor fault codes apply. | Int16 | °C | 0.1 | R |
| 5100 | 1 | SG-Ready 1 Input register 35101. 0 = off, 1 = on, 2...65535 = undefined. | UInt16 | - | 1 | R |
| 5101 | 1 | SG-Ready 2 Input register 35102. 0 = off, 1 = on, 2...65535 = undefined. | UInt16 | - | 1 | R |
| 5102 | 1 | Input H1.2 Input register 35103. Sensor input; -32768/-32767/-32766/-32758/-32757 are the sensor fault codes, otherwise -50.0...500.0 °C. | Int16 | °C | 0.1 | R |
| 5103 | 1 | Input H1.3 Input register 35104. Sensor input; -32768/-32767/-32766/-32758/-32757 are the sensor fault codes, otherwise -50.0...500.0 °C. | Int16 | °C | 0.1 | R |
| 5104 | 1 | Input H1.4 Input register 35105. Sensor input; -32768/-32767/-32766/-32758/-32757 are the sensor fault codes, otherwise -50.0...500.0 °C. | Int16 | °C | 0.1 | R |
| 5105 | 1 | Input H1.5 Input register 35106. Sensor input; -32768/-32767/-32766/-32758/-32757 are the sensor fault codes, otherwise -50.0...500.0 °C. | Int16 | °C | 0.1 | R |
| 5106 | 1 | Input DE1 Input register 35107. Digital input, 0 = off, 1 = on. | UInt16 | - | 1 | R |
| 5107 | 1 | Input DE2 Input register 35108. Digital input, 0 = off, 1 = on. | UInt16 | - | 1 | R |
| 6100 | 1 | Total energy today Input register 36101. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6101 | 1 | Total energy yesterday Input register 36102. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6102 | 1 | Total energy month Input register 36103. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6103 | 1 | Total energy year Input register 36104. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6200 | 1 | Heating energy today Input register 36201. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6201 | 1 | Heating energy yesterday Input register 36202. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6202 | 1 | Heating energy month Input register 36203. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6203 | 1 | Heating energy year Input register 36204. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6300 | 1 | Hot water energy today Input register 36301. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6301 | 1 | Hot water energy yesterday Input register 36302. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6302 | 1 | Hot water energy month Input register 36303. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6303 | 1 | Hot water energy year Input register 36304. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6400 | 1 | Cooling energy today Input register 36401. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6401 | 1 | Cooling energy yesterday Input register 36402. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6402 | 1 | Cooling energy month Input register 36403. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
| 6403 | 1 | Cooling energy year Input register 36404. Energy counter 0...65535 kWh. | UInt16 | kWh | 1 | R |
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Notes
Source: Weishaupt “Datenpunktliste Modbus TCP (WWP)”, document 83807301, edition 1/2025-11, vendor-hosted at https://www.weishaupt.de/uploads/tx_weishaupt_documents/documents/83807301.pdf (German; the value, unit and enum columns are German). §3.1 gives the factory interface settings: Modbus TCP on port 502, slave address 1 (all system devices answer on address 1 and are separated by IP address), function code 0x04 for the read block, and at most 5 consecutive data points per read. The document numbers its data points as 3xxxx input registers and 4xxxx holding registers; this seed stores the wire address (reference minus 30001 resp. 40001) with zero_based addressing. Scaling comes from the document's Format/Wert columns: Format Sensor and FormatSollwert carry 0.1 °C (-500...5000 = -50.0...500.0 °C), FormatFeuchte and FormatLeistungswert are whole percent, FormatEnergie is kWh, FormatWarmwasserPush is minutes and the status/fault formats are enumerations that the document tabulates (0...44); the enumeration values are summarised rather than transcribed. The heating-circuit block (3.3, input registers 31xxx) prints four parallel address columns for heating circuits 1-4 with their value tables interleaved, so those rows are left out rather than guessed, as is the second heat-generator block (3.6, addresses 34101-34107: status, operating hours and the E-heater status/hour counters). The hot-water, heat-pump, input and statistics blocks are complete. Registers the document types as unsigned are UInt16, temperature and setpoint registers Int16. The system-block read/write registers (40001, 40002) are the only writable points in this map.