Register map(s) for this device, with a note of how far each has been checked. Addresses are 0-based, as on the wire. Scale and byte order are confirmed only at the hardware-verified rung.
Decode path is structurally sound (addresses, widths, finite values). Does NOT prove word order or scaling.
| point | address (0-based) | type | scale | unit |
|---|---|---|---|---|
| Outdoor temperature (BT1) | 1 | I16 | 0.1 | °C |
| Supply temperature (BT2) | 4 | I16 | 0.1 | °C |
| Supply temperature (BT2) | 5 | I16 | 0.1 | °C |
| Return temperature (BT3) | 7 | I16 | 0.1 | °C |
| Hot water top (BT7) | 8 | I16 | 0.1 | °C |
| Hot water charging (BT6) | 9 | I16 | 0.1 | °C |
| Brine in (BT10) | 10 | I16 | 0.1 | °C |
| Brine out (BT11) | 11 | I16 | 0.1 | °C |
| Condenser supply line (BT12) | 12 | I16 | 0.1 | °C |
| Discharge (BT14) | 13 | I16 | 0.1 | °C |
| Liquid line (BT15) | 14 | I16 | 0.1 | °C |
| Suction gas (BT17) | 16 | I16 | 0.1 | °C |
| Exhaust air (BT20) | 19 | I16 | 0.1 | °C |
| Extract air (BT21) | 20 | I16 | 0.1 | °C |
| Reset alarm | 22 | U16 | 1 | |
| Room temperature (BT50) | 26 | I16 | 0.1 | °C |
| Pool temperature (BT51) | 27 | I16 | 0.1 | °C |
| Cooling temperature (EQ1-BT64) | 30 | I16 | 0.1 | °C |
| Return line (EQ1-BT65) | 31 | I16 | 0.1 | °C |
| Supply temp. min. | 34 | I16 | 0.1 | °C |
| Boiler temperature (BT52) | 38 | I16 | 0.1 | °C |
| External supply line (BT25) | 39 | I16 | 0.1 | °C |
| Flow sensor (BF1) | 40 | I16 | 0.1 | l/m |
| Own curve 41 | 41 | I16 | 1 | |
| Own curve 42 | 42 | I16 | 1 | |
| Own curve 43 | 43 | I16 | 1 | |
| Own curve 44 | 44 | I16 | 1 | |
| Own curve 45 | 45 | I16 | 1 | |
| Current BE3 | 46 | U32LE | 0.1 | A |
| Current BE2 | 48 | U32LE | 0.1 | A |
| Current BE1 | 50 | U32LE | 0.1 | A |
| Hot water demand | 56 | I16 | 1 | |
| Start temperature HW normal temperature | 59 | I16 | 0.1 | |
| Stop temperature HW normal temperature | 63 | I16 | 0.1 | |
| Supply temp. 1 (BT63) | 72 | I16 | 0.1 | °C |
| Return temperature (BT3) | 77 | I16 | 0.1 | °C |
| Compressor sensor (EB100-BT29) | 86 | I16 | 0.1 | °C |
| Outgoing hot water (BT70) | 87 | I16 | 0.1 | °C |
| Return temperature (BT71) | 88 | I16 | 0.1 | °C |
| Collector temperature (BT57) | 90 | I16 | 0.1 | °C |
| Heating dump temperat. (BT75) | 91 | I16 | 0.1 | °C |
| Period time heating | 92 | U16 | 0.1 | |
| Period time hot water | 93 | U16 | 0.1 | |
| Period time cooling | 94 | U16 | 0.1 | |
| Operating mode brine pump | 96 | I16 | 1 | |
| Degree minutes start compressor | 97 | I16 | 1 | |
| Collector in (BT26) | 106 | I16 | 0.1 | °C |
| Hot water comfort return (BT82) | 174 | I16 | 0.1 | °C |
| Hot water comfort heater (BT83) | 175 | I16 | 0.1 | °C |
| Allow add.heat (at operation mode manual) | 180 | U16 | 1 | |
| Permit heating (at operation mode manual) | 181 | U16 | 1 | |
| Permit cooling (at operation mode manual) | 182 | U16 | 1 | |
| Auto mode, start temperature for cooling | 183 | U16 | 0.1 | |
| Auto mode, stop temperature for heating | 184 | I16 | 0.1 | |
| Auto mode, additional heat stop temperature | 185 | I16 | 0.1 | |
| Alarm action, lower room temperature | 196 | U16 | 1 | |
| Alarm action lower HW temperature | 197 | U16 | 1 | |
| AUX relay (AUX10) | 216 | U16 | 1 | |
| Heating medium pump speed (GP1) (at operation mode manual) | 218 | U16 | 1 | % |
| Brine pump speed (GP2) (at operation mode manual) | 222 | I16 | 1 | % |
| AUX relay (AUX11) | 224 | U16 | 1 | |
| Operating mode | 237 | U16 | 1 | |
| Requested compressor frequency | 298 | U16 | 0.1 | Hz |
| Requested compressor frequency | 299 | U16 | 0.1 | Hz |
| Requested compressor frequency | 300 | U16 | 0.1 | Hz |
| Requested compressor frequency | 301 | U16 | 0.1 | Hz |
| Pulse energy meter (BE7/BF3) | 396 | U32LE | 0.01 | kWh |
| Pulse energy meter (BE6/BF2) | 398 | U32LE | 0.01 | kWh |
| Alarm number | 400 | U16 | 1 | |
| Fan speed | 401 | U16 | 1 | Rpm |
| Airflow (BP16) | 425 | I16 | 0.1 | m3/h |
| Low press (BP8) | 502 | I16 | 0.1 | °C |
| High pressure (BP9) | 503 | I16 | 0.1 | °C |
| Injection (BT81) | 504 | I16 | 0.1 | °C |
| Evaporator out (BT84) | 507 | I16 | 0.1 | °C |
| Low press (BP8) | 518 | I16 | 0.1 | °C |
| High pressure (BP9) | 519 | I16 | 0.1 | °C |
| Injection (BT81) | 520 | I16 | 0.1 | °C |
| Evaporator out (BT84) | 523 | I16 | 0.1 | °C |
| Low press (BP8) | 534 | I16 | 0.1 | °C |
| High pressure (BP9) | 535 | I16 | 0.1 | °C |
| Injection (BT81) | 536 | I16 | 0.1 | °C |
| Evaporator out (BT84) | 539 | I16 | 0.1 | °C |
| Low press (BP8) | 550 | I16 | 0.1 | °C |
| High pressure (BP9) | 551 | I16 | 0.1 | °C |
| Injection (BT81) | 552 | I16 | 0.1 | °C |
| Evaporator out (BT84) | 555 | I16 | 0.1 | °C |
| Degree minutes start additional heat | 679 | I16 | 1 | |
| Operat. mode charge pump | 783 | U16 | 1 | |
| Operating mode heating medium pump | 853 | I16 | 1 | |
| Alarm number | 860 | U16 | 1 | |
| Alarm number | 885 | U16 | 1 | |
| Alarm number | 910 | U16 | 1 | |
| Calculated supply temp | 1017 | I16 | 0.1 | °C |
| Total run time additional heat | 1025 | I32LE | 0.1 | h |
| Operating prioritisation | 1028 | U16 | 1 | |
| Add. heat steps | 1029 | U16 | 1 | |
| Oper. mode shunt climate system 2 | 1032 | U16 | 1 | |
| Shunt valve (QN11) | 1034 | U16 | 1 | |
| Current compressor frequency | 1046 | U16 | 0.1 | Hz |
| Hot water circulation (GP11) | 1063 | U16 | 1 | |
| External heating medium pump (GP10) status | 1066 | U16 | 1 | |
| Compressor starter | 1083 | I32LE | 1 | |
| Statistics compressor EP14 | 1087 | I32LE | 1 | h |
| Compressor status | 1100 | U16 | 1 | |
| Heating medium pump speed (GP1) | 1102 | U16 | 1 | % |
| Brine pump speed (GP2) | 1104 | U16 | 1 | % |
| Diverter valve QN19 | 1134 | U16 | 1 | |
| Operating mode brine pump | 1319 | I16 | 1 | |
| Return temperature (BT3) | 1340 | I16 | 0.1 | °C |
| Condenser supply line (BT12) | 1343 | I16 | 0.1 | °C |
| Discharge (BT14) | 1344 | I16 | 0.1 | °C |
| Liquid line (BT15) | 1345 | I16 | 0.1 | °C |
| Suction gas (BT17) | 1346 | I16 | 0.1 | °C |
| Compressor starts (EP14) | 1354 | U32LE | 1 | |
| Total run time compressor (EP14) | 1356 | U32LE | 0.1 | h |
| Return temperature (BT3) | 1385 | I16 | 0.1 | °C |
| Condenser supply line (BT12) | 1388 | I16 | 0.1 | °C |
| Discharge (BT14) | 1389 | I16 | 0.1 | °C |
| Liquid line (BT15) | 1390 | I16 | 0.1 | °C |
| Suction gas (BT17) | 1391 | I16 | 0.1 | °C |
| Compressor starts (EP14) | 1399 | U32LE | 1 | |
| Total run time compressor (EP14) | 1401 | U32LE | 0.1 | h |
| Return temperature (BT3) | 1430 | I16 | 0.1 | °C |
| Condenser supply line (BT12) | 1433 | I16 | 0.1 | °C |
| Discharge (BT14) | 1434 | I16 | 0.1 | °C |
| Liquid line (BT15) | 1435 | I16 | 0.1 | °C |
| Suction gas (BT17) | 1436 | I16 | 0.1 | °C |
| Compressor starts (EP14) | 1444 | U32LE | 1 | |
| Total run time compressor (EP14) | 1446 | U32LE | 0.1 | h |
| Return temperature (BT3) (EP15) | 1454 | I16 | 0.1 | °C |
| Brine in (BT10) (EP15) | 1455 | I16 | 0.1 | °C |
| Brine out (BT11) (EP15) | 1456 | I16 | 0.1 | °C |
| Condenser supply line (BT12) (EP15) | 1457 | I16 | 0.1 | °C |
| Discharge (BT14) (EP15) | 1458 | I16 | 0.1 | °C |
| Liquid line (BT15) (EP15) | 1459 | I16 | 0.1 | °C |
| Suction gas (BT17) (EP15) | 1460 | I16 | 0.1 | °C |
| Oil temperature (BT29) (EP15) | 1461 | I16 | 0.1 | °C |
| Pressure (BP8) (EP15) | 1462 | I16 | 0.1 | °C |
| Compressor, time to start (EB100-EP15) | 1464 | U16 | 1 | |
| Heating medium pump speed (EB101-EP15) | 1466 | U16 | 1 | % |
| Brine pump speed (EB101-EP15) | 1467 | U16 | 1 | % |
| Total run time compressor (EP15) | 1470 | U32LE | 0.1 | h |
| Total run time compressor hot water (EP15) | 1472 | U32LE | 0.1 | h |
| Alarm number (EP15) | 1474 | U16 | 1 | |
| Return temperature (BT3) (EP14) | 1475 | I16 | 0.1 | °C |
| Brine in (BT10) (EP14) | 1476 | I16 | 0.1 | °C |
| Brine out (BT11) (EP14) | 1477 | I16 | 0.1 | °C |
| Condenser supply line (BT12) (EP14) | 1478 | I16 | 0.1 | °C |
| Discharge (BT14) (EP14) | 1479 | I16 | 0.1 | °C |
| Liquid line (BT15) (EP14) | 1480 | I16 | 0.1 | °C |
| Suction gas (BT17) (EP14) | 1481 | I16 | 0.1 | °C |
| Oil temperature (BT29) (EP14) | 1482 | I16 | 0.1 | °C |
| Pressure (BP8) (EP14) | 1483 | I16 | 0.1 | °C |
| Compressor, time to start (EB100-EP14) | 1485 | U16 | 1 | |
| Heating medium pump speed (EB101-EP14) | 1487 | U16 | 1 | % |
| Brine pump speed (EB101-EP14) | 1488 | U16 | 1 | % |
| Compressor starts (EP14) | 1489 | U32LE | 1 | |
| Total run time compressor (EP14) | 1491 | U32LE | 0.1 | h |
| Total run time compressor hot water (EP14) | 1493 | U32LE | 0.1 | h |
| Alarm number (EP14) | 1495 | U16 | 1 | |
| Calc supply temp cooling | 1567 | I16 | 0.1 | °C |
| Status ACS 45 | 1568 | U16 | 1 | |
| Heat dump QN36 | 1569 | U16 | 1 | |
| Shunt valve QN18 | 1570 | U16 | 1 | |
| Flow measurement hot water (compressor incl. add) | 1575 | U32LE | 0.1 | kWh |
| Flow measurement (compressor incl. add.) | 1577 | U32LE | 0.1 | kWh |
| Flow measurement pool (compressor only) | 1581 | U32LE | 0.1 | kWh |
| Flow measurement hot water (compressor only) | 1583 | U32LE | 0.1 | kWh |
| Flow measurement heat (compressor only) | 1585 | U32LE | 0.1 | kWh |
| Charge pump speed (EQ1-GP12) | 1589 | U16 | 1 | |
| Outdoor temperature (BT28) | 1609 | I16 | 0.1 | °C |
| Evaporator in (BT16) | 1610 | I16 | 0.1 | °C |
| Outdoor temperature (BT28) | 1613 | I16 | 0.1 | °C |
| Evaporator in (BT16) | 1614 | I16 | 0.1 | °C |
| Outdoor temperature (BT28) | 1617 | I16 | 0.1 | °C |
| Evaporator in (BT16) | 1618 | I16 | 0.1 | °C |
| Outdoor temperature (BT28) | 1621 | I16 | 0.1 | °C |
| Evaporator in (BT16) | 1622 | I16 | 0.1 | °C |
| Heating medium pump speed (GP1) / Charge pump (EB101-GP12) | 1636 | U16 | 1 | % |
| Hot water charging (BT6) (EP15) | 1682 | I16 | 0.1 | °C |
| Hot water top (BT7) (EP15) | 1683 | I16 | 0.1 | °C |
| Supply temperature (BT2) (EP15) | 1684 | I16 | 0.1 | °C |
| Compressor status (EP15) | 1685 | U16 | 1 | |
| Compressor status (EP14) | 1686 | U16 | 1 | |
| Current compressor frequency | 1761 | I16 | 0.1 | Hz |
| Defrost | 1763 | U16 | 1 | |
| Current compressor frequency | 1775 | I16 | 0.1 | Hz |
| Defrost | 1777 | U16 | 1 | |
| Current compressor frequency | 1789 | I16 | 0.1 | Hz |
| Defrost | 1791 | U16 | 1 | |
| Pressure (BP4) | 1801 | I16 | 0.1 | bar |
| Low pressure switch (BP2) | 1802 | I16 | 0.1 | bar |
| Current compressor frequency | 1803 | I16 | 0.1 | Hz |
| Defrost | 1805 | U16 | 1 | |
| Diverter valve (QN35) | 1821 | U16 | 1 | |
| Charge pump speed (GP12) | 1822 | U16 | 1 | % |
| Ext. heat. medium pump (GP10) | 1825 | U16 | 1 | |
| Circulation pump GP9/GP16 | 1828 | U16 | 1 | |
| Diverter valve QN12 | 1830 | U16 | 1 | |
| ACS EQ1-GP14 | 1831 | U16 | 1 | |
| Passive cooling pump (GP13) | 1833 | U16 | 1 | |
| Circulation pump GP3 | 1835 | U16 | 1 | |
| Evaporator (BT16 2) | 1966 | I16 | 0.1 | °C |
| Alarm number | 1975 | U16 | 1 | |
| Hot water start (BT5) | 2014 | I16 | 0.1 | °C |
| Fan speed GQ2 | 2133 | U16 | 1 | % |
| Instantaneous used power | 2166 | U32LE | 0.1 | W |
| Current power | 2176 | U32LE | 1 | W |
| Total average power (Solar PV) | 2178 | U32LE | 1 | W |
| Total energy | 2180 | I32LE | 0.1 | kWh |
| Active alarm | 2195 | U16 | 1 | |
| Diverter valve (QN10) | 2196 | U16 | 1 | |
| Exh. air (AZ30-BT20) | 2202 | I16 | 0.1 | °C |
| Extr. air (AZ30-BT21) | 2203 | I16 | 0.1 | °C |
| Supp. air (AZ30-BT22) | 2204 | I16 | 0.1 | °C |
| Outd temperature (AZ30-BT23) | 2205 | I16 | 0.1 | °C |
| Humidity (AZ30-BM20) | 2206 | I16 | 0.1 | RH |
| Exh. air (AZ31-BT20) | 2207 | I16 | 0.1 | °C |
| Extract air (AZ31-BT21) | 2208 | I16 | 0.1 | °C |
| Supply air (AZ31-BT22) | 2209 | I16 | 0.1 | °C |
| Outd temperature (AZ31-BT23) | 2210 | I16 | 0.1 | °C |
| Exh. air (AZ10-BT20) | 2211 | I16 | 0.1 | RH |
| Exh. air (AZ32-BT20) | 2212 | I16 | 0.1 | °C |
| Extract air (AZ32-BT21) | 2213 | I16 | 0.1 | °C |
| Supply air (AZ32-BT22) | 2214 | I16 | 0.1 | °C |
| Outd temperature (AZ32-BT23) | 2215 | I16 | 0.1 | °C |
| Humidity (AZ32-BM20) | 2216 | I16 | 0.1 | RH |
| Exh. air (AZ33-BT20) | 2217 | I16 | 0.1 | °C |
| Extract air (AZ33-BT21) | 2218 | I16 | 0.1 | °C |
| Supply air (AZ33-BT22) | 2219 | I16 | 0.1 | °C |
| Outd temperature (AZ33-BT23) | 2220 | I16 | 0.1 | °C |
| Humidity (AZ33-BM20) | 2221 | I16 | 0.1 | RH |
| Heating medium pump speed (GP1) | 2242 | U16 | 1 | % |
| Low pressure (BP8) | 2308 | I16 | 0.01 | bar |
| Shunt 0-10V | 2401 | I16 | 1 | |
| Operating mode, shunt controlled brine (QN41) | 2410 | U16 | 1 | |
| Diverter valve (QN10)-1 | 2411 | U16 | 1 | |
| Diverter valve (QN10)-2 | 2412 | U16 | 1 | |
| Diverter valve (QN10) Slave 1 | 2437 | I16 | 1 | |
| Diverter valve (QN10) Slave 2 | 2438 | I16 | 1 | |
| Diverter valve (QN10) Slave 3 | 2439 | I16 | 1 | |
| Diverter valve (QN10) Slave 4 | 2440 | I16 | 1 | |
| Diverter valve (QN10) Slave 5 | 2441 | I16 | 1 | |
| Diverter valve (QN10) Slave 6 | 2442 | I16 | 1 | |
| Diverter valve (QN10) Slave 7 | 2443 | I16 | 1 | |
| Diverter valve (QN10) Slave 8 | 2444 | I16 | 1 | |
| Step add. heat type (ELK 26/42) | 2454 | U16 | 1 | |
| Solar energy used for | 2726 | U16 | 1 | |
| Activate function | 2740 | U16 | 1 | |
| Control AUX via modbus | 2741 | I16 | 1 | |
| Control calculated supply temp - heat | 5009 | I16 | 0.1 | °C |
| Control Calculated supply temp - cooling | 5017 | I16 | 0.1 | °C |
| Outdoor temperature BT1 | 5217 | I16 | 1 | |
| External supply line BT25 | 5218 | I16 | 1 | |
| Return temperature BT71 | 5219 | I16 | 1 | |
| Hot water start BT5 | 5220 | I16 | 1 | |
| Hot water charging BT6 | 5221 | I16 | 1 | |
| Hot water top BT7 | 5222 | I16 | 1 | |
| Pool 1 temperature BT51 | 5223 | I16 | 1 | |
| Pool 2 temperature BT51 | 5224 | I16 | 1 | |
| Boiler temperature BT52 | 5225 | I16 | 1 | |
| Room sensor BT50 | 5987 | I16 | 1 |
Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.
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