Hisense YXE-A03U Technical & Service Manual page 107

4.
Control BOX (B544(E))
MODEBUS Protocol
4
1.Function code
Address code: The address code is set by the DIP switch.
Function code: The function code is as follows:
01
02
03
04
05
06
2. Definition of registers
(1) Instruction of the registers
Coil and Hold Registers are for setting air conditioner parameters.
Discrete Inputs and Input Registers are for reading air conditioner status.
(2) Definition of registers as follows:
No.
00001
00002
00003 Electric heater status
00004 Energy-saving status
00005
00006 Compressor status
00007
00008
No. Object
00001 Indoor temperature
The setting
00002
temperature
00003 Mode
00004 Fan speed
00005 Swing
00006
Outlet air
00007
temperature
Code
Read Coils
Read Discrete Inputs
Read Holding Registers
Read Input Registers
Write Single Coil
Write Single Holding Register
Read Discrete Inputs (Code 0x02)
Object Type
ON/OFF status BI
Sleep status BI
BI
BI
Defrost status BI
BI
Super mode BI
Mute mode BI
Read Input Registers (0x04)
Type Reg Addr
AI 0001
AI 0002
MI 0007
MI 0008
MI 0009
Fault MI 0012
AI 0015
Function
Addr
0000 0-OFF/1-ON
0003 0-OFF/1-ON
0004 0-OFF/1-ON
0009 0-OFF/1-ON
0010 0-No/1-Yes
0011 0-OFF/1-ON
0014 0-No/1-Yes
0015 0-No/1-Yes
Value
-20-79
18-32
FAN=00；HEAT=01；
COOL=02；DRY=03；
AUTO CODE=05;
AUTO HEAT=06
AUTO FAN=07;
AUTO=00；HIGH=01
MIDDLE=03；LOW=02
NO SWING=0；
LEFT/RIGHT=1;
UP/DOWN=2;
UP/DOWN/LEFT/RIGHT=3
1-255
-20-79
105
Value Comment
Comment
See Error Code table