Read

Write

 

 

 

 

Object no.

Object

Address (Decimal)

Register Length

Read Only (RO) or Read/Write (R/W)

Function code (HEX)
0x03---Read Holding Registers

0x04---Read Input Registers

0x06---Write Single Register

0x10---Write Multiple Registers

Multi-Bytes Access Group

Special Process

Default

Data Type (Decimal)

1

Indoor unit On/Off status

0001

1

RO

0x04

-

2

-

-

0: OFF

1: ON (Normal mode)

2: ECO

2

Current VRF mode

0002

1

RO

0x04

-

2

-

-

0: AUTO

1: COOL

2: HEAT

3: Dehumidification

4: FAN

3

Fan speed setting status

0003

1

RO

0x04

-

2

-

-

0: AUTO

1: Fan speed 1

2: Fan speed 2

3: Fan speed 3

4: Fan speed 4

5: Fan speed 5

6: Fan speed 6

7: Fan speed 7

4

Room temperature

0004

1

RO

0x04

-

2

x50

-

-10...50 ℃

5

Active room temperature setpoint

0005

1

RO

0x04

-

2

x50

-

10...50 ℃

6

Alarm status

0006

1

RO

0x04

-

2

-

0

0: OK

1: Error

7

Indoor unit On/Off status

0001

1

RO

0x03

-

2

-

-

0: OFF

1: ON (Normal mode)

2: ECO

8

Current VRF mode

0002

1

RO

0x03

-

2

-

-

0: AUTO

1: COOL

2: HEAT

3: Dehumidification

4: FAN

9

Fan speed setting status

0003

1

RO

0x03

-

2

-

-

0: AUTO

1: Fan speed 1

2: Fan speed 2

3: Fan speed 3

4: Fan speed 4

5: Fan speed 5

6: Fan speed 6

7: Fan speed 7

10

Room temperature

0004

1

RO

0x03

-

2

x50

-

-10...50 ℃

11

Active room temperature setpoint

0005

1

RO

0x03

-

2

x50

-

10...50 ℃

12

Alarm status

0006

1

RO

0x03

-

2

-

0

0: OK

1: Error

13

Indoor unit On/Off command

0010

1

R/W

0x03

0x06 or 0x10

3

-

1

0: OFF

1: ON (Normal mode)

2: ECO

14

VRF mode

0011

1

R/W

0x03

0x06 or 0x10

3

-

0

0: AUTO

1: COOL

2: HEAT

3: Dehumidification

4: FAN

15

Setpoint temperature

0012

1

R/W

0x03

0x06 or 0x10

3

x50

-

5...35 ℃

16

Room temperature from VRF indoor unit

0013

1

R/W

0x03

0x06 or 0x10

3

x50

-

-10...50 ℃

17

Fan speed set

0014

1

R/W

0x03

0x06 or 0x10

3

-

0

0: AUTO

1: Fan speed 1

2: Fan speed 2

3: Fan speed 3

4: Fan speed 4

5: Fan speed 5

6: Fan speed 6

7: Fan speed 7

18

Indoor unit error code

0015

1

R/W

0x03

0x06 or 0x10

3

-

-

VRF error codes (ASCII)

19

Indoor unit error code

0016

1

R/W

0x03

0x06 or 0x10

3

-

-

VRF error codes (ASCII)

20

P01

0030

1

R/W

0x03

0x06 or 0x10

4

-

1

0 = AUTO/HEAT/COOL/FAN/Dehumidification

1 = HEAT/COOL/FAN/Dehumidification

2 = HEAT/COOL/FAN

3 = HEAT/COOL

4 = HEAT/FAN

5 = COOL/FAN/Dehumidification

6 = COOL/FAN

21

P02

0031

1

R/W

0x03

0x06 or 0x10

4

-

1

1 = ON – OFF

2 = ON – ECO – OFF

22

P03

0032

1

R/W

0x03

0x06 or 0x10

4

-

1

0 = 0.5 K

1 = 1 K

23

P04

0033

1

R/W

0x03

0x06 or 0x10

4

-

0

0 = ℃ (Celsius)

1 = °F (Fahrenheit)

24

P05

0034

1

R/W

0x03

0x06 or 0x10

4

x50

0

-5…5 K

25

P06

0035

1

R/W

0x03

0x06 or 0x10

4

-

0

0 = Room temperature

1 = Setpoint

2 = BUS temperature

26

P08

0036

1

R/W

0x03

0x06 or 0x10

4

x50

21 ℃

5…40 ℃

27

P09

0037

1

R/W

0x03

0x06 or 0x10

4

x50

5 ℃

5 ℃…P10 (P10 = 40 ℃ max.)

28

P10

0038

1

R/W

0x03

0x06 or 0x10

4

x50

35 ℃

(P09 = 5 ℃ min.) P09…40 ℃

30

P14

0040

1

R/W

0x03

0x06 or 0x10

4

-

0

0 = Unlock

1 = Setpoint & fan buttons adjustment only

2 = Full lock

34

P27

0044

1

R/W

0x03

0x06 or 0x10

4

-

0

0 = Previous operating mode

1 = OFF

2 = ON (Normal mode)

35

P28

0045

1

R/W

0x03

0x06 or 0x10

4

-

1

0 = Disable

1 = Enable

41

P53

0051

1

R/W

0x03

0x06 or 0x10

4

-

3

1 = 1-speed

2 = 2-speed

3 = 3-speed

4 = 4-speed

5 = 5-speed

6 = 6-speed

7 = 7-speed

46

P71

0057

1

R/W

0x03

0x06 or 0x10

4

-

0

0 = Disable

1 = Reload start

47

P81

0058

1

R/W

0x03

0x06 or 0x10

5

-

247

1…247

48

P82

0059

1

R/W

0x03

0x06 or 0x10

5

-

2

1 = 9600 bps

2 = 19200 bps

3 = 38400 bps

4 = 57600 bps

49

P83

0060

1

R/W

0x03

0x06 or 0x10

5

-

0

0 = 1/8/E/1

1 = 1/8/O/1

2 = 1/8/N/1

3 = 1/8/N/2

50

P98

0061

1

R/W

0x03

0x06 or 0x10

5

-

1

0 = Disable

1 = Enable