There are two types of registers. The "Common" and the "HP-Specfic" registers.
The interface is continuously syncing with the Common registers and will output any change.
A Common register consists of sensor information, status of devices (compressor, pumps,
valves), a few standard settings and a some other controller parameter such as Degree
minutes. The Common registers has a common structure and id's for all heat pump models.
With the "XL" command will get a list of all available registers for to connected heatpump
and with the "XP" command you have the option to turn on clear text register names and
values shown in decimal. This feature is convenient for test and debug.
The HP-Specific registers will only be read and output if the "XS" command is sent. These
registers are unique for every heat pump model. You can set/write to some of the HP-Specific
registers using the "XW" command. Please see tables in the end of this document for details.
Example of register data output from the interface
XR00010106(cr) 0x0001=reg Radiator return of temp type (0)
0x0106=data (0x01*256)+0x06 = 262 = 26.2 deg C
XR00030198(cr) 0x0003=reg Heat carrier return of temp type (0)
0x0198=data (0x01*256)+0x98 = 408 = 40.8 deg C
XR0006FFE6(cr) 0x0001=reg Cold carrier out of temp type (0)
0xFFE6 and 0x8000 = true (left most bit set=negative)
0xFFE6=data ((0xFF*256)+0xE9)-65536 = -2.3 deg C
XR1A040001(cr) 0x1A04=reg Radiator return of on/off type (1)
0x0001=data ON
Example of data output from the interface with clear text output turned on (XP)
XR000200ED 002 Radiator Forward (23.7c)
XR0003018A 003 Heat carrier Return (39.4c)
XR000400E9 004 Heat carrier Forwrd (23.3c)
XR00050075 005 Brine in/Evaporator (11.7c)
XR00060057 006 Brine out/Condenser (8.7c)
XR0007FF6A 007 Outdoor (-15.0c)
XR0008DEAD 008 Indoor (-853.1c)
XR000901D3 009 Hot water 1 / Top (46.7c)
XR000B024A 00B Hot gas / Compr. (58.6c)
XR000E0000 00E Air intake (0.0c)
XR002000D9 020 Radiator Forward 2 (21.7c)
XR00210000 021 Indoor 2 (0.0c)
XR1A010001 A01 Compressor (1.0 )
XR1A040001 A04 Pump Cold circuit (1.0 )
XR1A050001 A05 Pump Heat circuit (1.0 )
XR1A060001 A06 Pump Radiator (1.0 )
XR1A070000 A07 Switch valve 1 (0.0 )
XR1A090000 A09 Fan (0.0 )
XR1A0A0001 A0A High Pressostat (1.0 )
XR1A0B0001 A0B Low Pressostat (1.0 )
XR1A0C0000 A0C Heating cable (0.0 )
XR1A0D0000 A0D Crank case heater (0.0 )
XR1A200000 A20 Alarm (0.0 )
