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

Software version

0001

1

RO

0x04

-

-

-

-

102 = U1.0.2

2

Hardware version

0002

1

RO

0x04

-

-

-

-

102 = U1.0.2

3

Application overview

0003

1

RO

0x04

-

-

-

-

0 = 2-pipe, 2-wire valve, heating only

1 = 2-pipe, 2-wire valve, cooling only

2 = 2-pipe, 2-wire valve, H/C changeover manual

3 = 2-pipe, 3-wire valve, heating only

4 = 2-pipe, 3-wire valve, cooling only

5 = 2-pipe, 3-wire valve, H/C changeover manual

6 = 4-pipe, 2-wire valve, H/C changeover manual

7 = 4-pipe, 2-wire valve, H/C changeover auto

4

Room operating mode: State

0004

1

RO

0x04

-

-

-

-

1 = Protection

2 = Comfort

3 = Economy

5

Room temperature (via built-in or X1 sensor)

0005

1

RO

0x04

-

-

× 50

-

-20...70 °C

-100 °C = Out of service

6

Temperature setpoint

0006

1

RO

0x04

-

-

× 50

-

5...40 °C

7

Heating output

0007

1

RO

0x04

-

-

-

-

0 = Off

1 = On

8

Cooling output

0008

1

RO

0x04

-

-

-

-

0 = Off

1 = On

9

Fan operation

0009

1

RO

0x04

-

-

-

-

0 = Manual

1 = Automatic

10

Fan output

0010

1

RO

0x04

-

-

-

-

0 = Fan off

1 = Low fan

2 = Medium fan

3 = High fan

11

X1 (AI – NTC 3k)

0011

1

RO

0x04

-

-

× 50

-

-20...70 °C

-100 °C = Out of service

12

X1 (DI)

0012

1

RO

0x04

-

-

-

-

0 = Off

1 = On

13

Fault information

0013

1

RO

0x04

-

-

-

-

0: No alarm

Any bit set to 1 stands for an alarm or error defined as follows

Bit0: (BUS) communication error

Bit1: (Er1) Built-in sensor error

Bit2: (Er2) External input X1 error, e.g., sensor or switch is broken or removed

14

P01 / Application

0001

1

R/W

0x03

0x06

-

-

2

0 = 2-pipe, 2-wire valve, heating only

1 = 2-pipe, 2-wire valve, cooling only

2 = 2-pipe, 2-wire valve, H/C changeover manual

3 = 2-pipe, 3-wire valve, heating only

4 = 2-pipe, 3-wire valve, cooling only

5 = 2-pipe, 3-wire valve, H/C changeover manual

6 = 4-pipe, 2-wire valve, H/C changeover manual

7 = 4-pipe, 2-wire valve, H/C changeover auto

15

P05 / Sensor calibration

0002

1

R/W

0x03

0x06

-

× 50

0

-5...+5 K

16

P06 / Standard temperature display

0003

1

R/W

0x03

0x06

-

-

0

0 = Room temperature (via built-in or X1 sensor)

1 = Temperature setpoint

2 = Temperature via bus

17

P09 / Minimum Comfort setpoint

0004

1

R/W

0x03

0x06

-

× 50

5 °C

5 °C...P10 (not included)

18

P10 / Maximum Comfort setpoint

0005

1

R/W

0x03

0x06

-

× 50

35 °C

P09 (not included)...40 °C

19

P11 / Economy heating setpoint (WheatEco)

0006

1

R/W

0x03

0x06

-

× 50

15 °C

0 = Off

5 °C...P12 (WCoolEco)

20

P12 / Economy cooling setpoint (WcoolEco)

0007

1

R/W

0x03

0x06

-

× 50

30 °C

0 = Off

P11 (WHeatEco)...40 °C

21

P14 / Keylock function

0008

1

R/W

0x03

0x06

-

-

0

0 = Unlock

1 = Full lock (only the button is unlocked)

2 = Full lock (all buttons are locked)

3 = Partial lock (setpoints are allowed to change via the +/- button; the button is unlocked)

22

P15 / Fan control deadzone in Comfort

0009

1

R/W

0x03

0x06

-

-

0

0 = Fan off

1 = Fan speed 1

23

P16 / Fan operations

0010

1

R/W

0x03

0x06

-

-

1

0 = Disable

1 = Enable

24

P27 / Operating mode settings upon power failure

0011

1

R/W

0x03

0x06

-

-

0

0 = Return to previous operating mode

1 = Protection

2 = Comfort

25

P28 / Timer with delay OFF

0012

1

R/W

0x03

0x06

-

-

0

0 = Users to set on-time period

1 to 23 = Preset with a fixed on-time in hours

26

P30 / Multifunctional Input (X1) function

0013

1

R/W

0x03

0x06

-

-

0

0 = Disable

1 = External room or return air temperature sensor (AI, NTC3k)

2 = Keycard contact (normally open)

3 = Keycard contact (normally close)

27

P65 / Protection heating setpoint

0014

1

R/W

0x03

0x06

-

× 50

8 °C

0 = Off

5 °C...P66 (WCoolProt); P66 = 40 °C max.

28

P66 / Protection cooling setpoint

0015

1

R/W

0x03

0x06

-

× 50

0

0 = Off

P50 (WCoolProt)...40 °C; P65 = 5 °C min.

29

P71 / Reload factory setting

0016

1

R/W

0x03

0x06

-

-

0

0 = Disabled

1 = Reload start

30

Room operating mode: Preselection

0101

1

R/W

0x03

0x06

-

-

4

1 = Protection

2 = Comfort

3 = Economy

4 = Not used

31

SYS Protection (Time schedule protection)

0102

1

R/W

0x03

0x06

-

-

0

0 = Inactive

1 = Protection

32

Fan command value

0103

1

R/W

0x03

0x06

-

-

0

0 = Auto

1 = Low speed fan

2 = Medium speed fan

3 = High speed fan

33

Temperature setpoint: Comfort

0104

1

R/W

0x03

0x06

-

× 50

21

5...40 °C

34

Temperature via bus

0105

1

R/W

0x03

0x06

-

× 50

-

-20...70 °C

35

Heating/cooling/ventilation changeover

0106

1

R/W

0x03

0x06

-

-

1

0 = Heating

1 = Cooling

2 = Ventilation

36

System time

0201

0202

2

R/W

0x03

0x10

-

-

0000

hhmm

h 0...23 = Hours

m 0...59 = Minutes

37

Restart device

0203

1

R/W

0x03

0x06

-

-

0

0 = Off

1 = Restart

38

Reserve1

0204

1

R/W

0x03

0x06

-

-

0

-

39

Reserve2

0205

1

R/W

0x03

0x06

-

-

0

-