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Extension for a Modbus TCP connection

The heat pump manager can be used as an accessory NWPM extension be integrated into an Ethernet network. With the NWPM extension it is possible to access the heat pump manager with the Modbus TCP protocol.

The following description always refers to the latest firmware. This can differ from previous versions.

Table of Contents

NWPM extension for ModbusTCP

Order reference

NWPM

item number

356960

Operating conditions

0 to 55 ° C
20/80% RH

Ethernet interface

RJ45 10BaseT
Cat5 max. 100m

protocol

Modbus TCP

Modbus TCP port

502

Slave ID

1

Storage

16 MB RAM
8 MB flash
3 MB for user pages

CPU

ARM7 TDMI @ 74MHz clock

operating system

Linux 2.4.21

Usable

from WPM 2004
from software H_H50

Delivery status with

Firmware

A1.5.0

user interface

v12

System requirement

The minimum system requirement for using the NWPM extension is a Dimplex heat pump with heat pump manager WPM 2004, WPM 2006, WPM 2007 or WPM EconPlus series with software version H_H50 and higher.

Furthermore, a PC with network connection, a router and an S / FTP cable of category 5e or higher is required to connect the NWPM extension necessary. A browser such as Mozilla Firefox must be installed on the PC to display the user-specific interface.

Function codes supported

Type

R / W

Function code

Modbus function

Digital

R.

01 (0x01)

Read coils

Analogue

R.

03 (0x03)

Read Holding Register

Digital

W.

05 (0x05)

Write single coil

Analogue

W.

06 (0x06)

Write single register

Digital

W.

15 (0x15)

Write multiple coils

Analogue

W.

16 (0x16)

Write multiple registers

installation

Note

ATTENTION
Before opening the device, all circuits must be disconnected from the power supply. All electrical connection work may only be carried out by a qualified electrician or a specialist for specified activities in compliance with the installation and operating instructions.

The installation of the NWPM extension takes place on the heat pump manager in the designated slot “Serial Card / BMS Card”. The following steps are carried out:

  • De-energize the heat pump manager

  • Remove the cover of the “Serial Card / BMS Card” slot with a small screwdriver

  • Installation of the NWPM extension

  • Close the opening with the enclosed cover

  • Supply the heat pump manager with voltage

Info

NOTE
For easy installation the NWPM extension Insert it at a slight angle, then hold it upright and press down. Then ensure that it is firmly seated!

Heat pump manager settings

Depending on the software version of the heat pump manager, the following settings must be checked and, if necessary, adjusted:

Software version

menu

Submenu

Setting value

from WPM_H

Modem -> with the key combination «menu"+"Enter" Select

protocol

Local

baud rate

19200

address

001

from WPM_L

Network -> with the key «menu" Select

protocol

LAN

from WPM_L20.2

Network -> with the key «menu" Select

protocol

LAN

Address range

1..127

Determine the IP address

Access to the user interface of the NWPM extension takes place via the dynamically assigned IP address of the router. This IP address can be found in the router's user interface using the respective MAC address of the NWPM extension can be read out. To do this, the administration of the router must be accessed.

From the heat pump manager software version L12 and firmware version A1.5.0 of the NWPM extension (delivery status from May 2013), the IP address assigned by the router can be read in the menu. This menu is accessed by pressing the key combination at the same time (approx. 5 seconds) «ESC» and «Enter». By pressing the «buttonmenu»You get back to the standard display.

  • Use the arrow keys to select "OTHER INFORMATION" and use «Enter» confirm

  • Select "PCOWEB / NET CONFIG" with the arrow keys and press «Enter» confirm

  • Select "PCOWEB settings" with the arrow keys and press «Enter» confirm

  • If the NWPM extension is connected to a router where the DHCP function is active, the assigned IP address is displayed

  • If the NWPM extension is not connected to a router, a fixed IP address can be assigned

  • The selection of DHCP must be set from ON to OFF and the desired IP address set

  • The netmask and gateway

  • or DNS1 and DNS2 can be read or assigned

  • If changes have been made, they must finally be confirmed with YES and a restart carried out

Hostname

After successfully assigning a dynamic IP address to the router and supporting this function, there is the option of access via a host name. This is made up of the term "pcowebXXXXXX" and the last 6 digits of the MAC address.

Example: http: // pcoweb10601f /

Info

NOTE
Access by host name is possible from firmware A1.5.0.

Netscan

First of all, the current version "Netscan" for the existing operating system must be searched for on the Internet and saved on the hard drive. If necessary, the folder content is then extracted and the "netscan.exe" file is executed.

  • IP address range selection of the network via the "IP" icon

  • Mark the address range of the network

  • Scanning the IP addresses "Start Scanning" and reading out the IP address based on the MAC address

Data point list

Operating data

KNX / EIB

Modbus

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL/REG

Conversion Rule

Conversion Value

DPT

Datapoint type

R/W

Unit

Surname

WPM software J / L

WPM software H

Outside temperature (R1)

1

27

signed 16 bit

float

OUT

Return

register

None

9.001

signed 16 bit

R.

° C

R

° C

Return temperature (R2)

2

29

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

° C

Return temperature setpoint

53

28

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

° C

Hot water temperature (R3)

3

30th

30

signed 16 bit

floatOUT

register

None

9.001

signed 16 bit

R

.

° C

Set hot water temperature

58

40

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

° C

Flow temperature (R9)

5

31

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

° C

Heat source inlet temperature (R24) *

6th

6

-

signed 16 bit

floatOUT

register

None

9.001

signed 16 bit

R

.

° C

Heat source outlet temperature (R6)

7th

7

41

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R.

R

° C

Target temperature 2nd heating circuit

54

32

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

° C

Temperature 2nd heating circuit (R5)

9

33

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

° C

Target temperature 3rd heating circuit

55

34

signed 16 bit

floatOUT

register

None

9.001

signed 16 bit

R

.

° C

Temperature 3rd heating circuit (R13)

10

35

signed 16 bit

floatOUT

register

None

9.001

signed 16 bit

R

.

° C

Room temperature 1 / RT-RTH Econ

11th

11

36

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

° C

Room temperature 2

12th

12

38

signed 16 bit

floatOUT

register

None

9.001

signed 16 bit

R

.

° C

Room humidity 1 / RT-RTH Econ

13th

13

37

unsigned 16 bit

float

OUT

register

None

9.001

unsigned 16 bit

R.

R

° C

Room humidity 2

14th

14

39

unsigned 16 bit

floatOUT

register

None

9.001

unsigned 16 bit

R

.

° C

Passive cooling

Flow temperature (R11)

19th

19

42

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

° C

Return temperature (R4)

20th

20

43

signed 16 bit

floatOUT

register

None

9.001

signed 16 bit

R

.

° C

Passive / active cooling

Return temp. according to primary circuit (R24)

21

-

signed 16 bit

floatOUT

register

None

9.001

signed 16 bit

R

.

° C

Solar

Collector sensor (R23)

10

-

signed 16 bit

floatOUT

register

None

9.001

signed 16 bit

R

.

° C

Solar storage tank (R22)

23

-

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

° C

ventilation

Ventilation

Outside air temperature

120

-

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

° C

Supply air temperature

121

-

signed 16 bit

floatOUT

register

None

9.001

signed 16 bit

R

.

° C

Exhaust air temperature

122

-

signed 16 bit

floatOUT

register

None

9.001

signed 16 bit

R

.

° C

Exhaust air temperature

123

-

signed 16 bit

floatOUT

register

None

9.001

signed 16 bit

R

.

° C

Speed of supply air fan

125

-

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

1 / min

Exhaust fan speed

126

-

signed 16 bit

float

OUT

register

None

9.001

signed 16 bit

R

.

1 / min

Info

*NOTE
The heat source inlet is only available for heat pumps with an electronic expansion valve.

history

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

Addres

Datapoint type

COIL/REG

R/W

Unit

Surname

WPM software J / L

WPM software H

Surname

RTU

IP

RTU

IP

Compressor 1

72

64

unsigned 16 bit

OUT

register

None

7.007

R

.

H

hour

Compressor 2

73

65

unsigned 16 bit

OUT

register

None

7.007

R

.

H

hour

Primary pump / fan (M11)

74

66

unsigned 16 bit

OUT

register

None

7.007

R

.

H

hour

2nd heat generator (E10)

75

67

unsigned 16 bit

OUT

register

None

7.007

R

.

H

hour

Heating pump (M13)

76

68

unsigned 16 bit

OUT

register

None

7.007

R

.

H

hour

Hot water pump (M18)

77

69

unsigned 16 bit

OUT

register

None

7.007

R

.

H

hour

Flange heating (E9)

78

70

unsigned 16 bit

OUT

register

None

7.007

R

.

H

hour

Swimming pool pump (M19)

79

71

unsigned 16 bit

OUT

register

None

7.007

R

.

H

hour

Additional circulation pump (M16)

71
from L12

-

unsigned 16 bit

OUT

register

None

7.007

register

R

.

H

hour

Amount of heat* Heating 1-4

223

5096

228

5101

unsigned 16 bit

OUT

register

None

7.007

R

.

kWh

Amount of heat* Heating 5-8

224

5097

229

5102

unsigned 16 bit

OUT

register

None

7.007

R

.

kWh

Amount of heat* Heating 9-12

225

5098

230

5103

unsigned 16 bit

OUT

register

None

7.007

R

.

kWh

Amount of heat* Hot water 1-4

226

5099

231

5104

unsigned 16 bit

OUT

register

None

7.007

R

.

kWh

Amount of heat* Hot water 5-8

227

5100

232

5105

unsigned 16 bit

OUT

register

None

7.007

R

.

kWh

Amount of heat* Hot water 9-12

228

5101

233

5106

unsigned 16 bit

OUT

register

None

7.007

R

.

kWh

Amount of heat* Swimming pool 1-4

229

5102

234

5107

unsigned 16 bit

OUT

register

None

7.007

R

.

kWh

Amount of heat* Swimming pool 5-8

230

5103

235

5108

unsigned 16 bit

OUT

register

None

7.007

R

.

kWh

Amount of heat* Swimming pool 9-12

231

5104

236

5109

unsigned 16 bit

OUT

register

None

7.007

R

.

kWh

Info

*NOTE
A quantity of heat can only be output for heat pumps with pressure sensors or an external heat meter WMZ!

Example of heat quantities*

The heat quantities are made up of 3 indices. These 3 indices have to be combined with the following formula for the amount of heat.

Heat amount heating = (heat amount heating 9-12 * 100000000) + (heat amount heating 5-8 * 10000) + heat amount heating 1-4

The amount of heat for "hot water" and "swimming pool" is determined according to this description. However, the corresponding data point is used here.

settings

1st heating circuit

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL/REG

Conversion Rule

Conversion Value

DPT

R/W

Range

Unit

Surname

WPM software J/L

WPM software H

Surname

RTU

IP

RTU

IP

Min.

Max.

Parallel shift

163

5036

129

5002

unsigned 16 bit

IN / OUT

register

None

7.001

R/W

0

38

0 = -19
1 = -18
2 = -17
3 = -16
4 = -15
5 = -14
6 = -13
7 = -12
8 = -11
9 = -10
10 = -9
11 = -8
12 = -7
13 = -6
14 = -5
15 = -4
16 = -3
17 = -2
18 = -1
19 = 0

20 = 1
21 = 2
22 = 3
23 = 4
24 = 5
25 = 6
26 = 7
27 = 8
28 = 9
29 = 10
30 = 11
31 = 12
32 = 13
33 = 14
34 = 15
35 = 16
36 = 17
37 = 18
38 = 19
 

Room temperature

46

21

unsigned 16 bit

IN / OUT

register

None

7.001

R/W

15.0

30.0

° C

Fixed setpoint temperature

164

5037

130

5003

unsigned 16 bit

IN / OUT

register

None

7.001

R / W

18th

60

° C

Heating curve end point

165

5038

142

5015

unsigned 16 bit

IN / OUT

register

None

7.001

R/W

20th

18

70

60

° C

Hysteresis

47

22nd

Heating curve end point

5038

5015

unsigned 16 bit

IN

register

Divide

10

7.001

R/W

0.5

5.0

K

20

70

° C

Hysteresis

47

22nd

22

unsigned 16 bit

OUT

register

Multiply

10

7.001

R/W

0.5

5.0

K

Target temp. dyn. cooling

170

5043

151

5024

unsigned 16 bit

IN / OUT

register

None

7.001

R/W

10

35

° C

2nd / 3rd heating circuit

In order to be able to make changes to the 2nd or 3rd heating circuit, the changeover must take place via an address. After switching over this address, it is possible to change parameters in the desired heating circuit without any problems.

Info

* ProgrammingNOTE
When selecting the 2nd heating circuit, the value 2 is initially sent to address 209. The required values for the 2nd heating circuit can then be changed. Analogous to the description, this is done with the 3rd heating circuit and the value 3.

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Range

Unit

Surname

RTU

IP

Min.

Max.

Select heating circuit 2/3

209

5082

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

2

3

2 = 2nd heating circuit
3 = 3rd heating circuit

Heating curve end point

211

5084

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

20th20

70

° C

Fixed value temperature

212

5085

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

20th20

60

° C

Parallel shift

213

5086

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

38

0 = -19
1 = -18
2 = -17
3 = -16
4 = -15
5 = -14
6 = -13
7 = -12
8 = -11
9 = -10
10 = -9
11 = -8
12 = -7
13 = -6
14 = -5
15 = -4
16 = -3
17 = -2
18 = -1
19 = 0

20 = 1
21 = 2
22 = 3
23 = 4
24 = 5
25 = 6
26 = 7
27 = 8
28 = 9
29 = 10
30 = 11
31 = 12
32 = 13
33 = 14
34 = 15
35 = 16
36 = 17
37 = 18
38 = 19
 

Mixer runtime

214

5087

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

1

6th

Min

Mixer hysteresis

93

Unsigned 16 bit

IN

register

Divide

10

7.001

R / W

0.5

2.0

K

Mixer hysteresis

93

Unsigned 16 bit

OUT

register

Multiply

10

7.001

R / W

0.5

2.0

K

Maximum temperature

215

5088

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

30th30

70

° C

Cooling set room temperature

216

5089

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

30th

0 = 15.0
1 = 15.5
2 = 16.0
3 = 16.5
4 = 17.0
5 = 17.5
6 = 18.0
7 = 18.5
8 = 19.0
9 = 19.5
10 = 20.0
11 = 20.5
12 = 21.0
13 = 21.5
14 = 22.0
15 = 22.5

16 = 23.0
17 = 23.5
18 = 24.0
19 = 24.5
20 = 25.0
21 = 25.5
22 = 26.0
23 = 26.5
24 = 27.0
25 = 27.5
26 = 28.0
27 = 28.5
28 = 29.0
29 = 29.5
30 = 30.0
 

° C

mode

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Range

WPM software J / L

WPM software H

Surname

RTU

IP

RTU

IP

Min.

Max.

operation mode

142

5015

134

5007

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

5

0 = summer
1 = auto
2 = vacation
3 = party
4 = 2nd heat generator
5 = cooling

Number of party hours

143

5016

135

5008

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

72

Number of vacation days

144

5017

136

5009

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

150

ventilation

stages

161

5034

-

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

5

0 = off
1 = automatic
2 = level 1
3 = level 2
4 = level 3
5 = intermittent ventilation

Time value burst ventilation

127

-

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

15th15

90

Info

NOTE
To use the ventilation function, a ventilation device of the ZL ... V (F) series with Modbus RTU connection to the heat pump manager is required.

Hot water

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Range

Unit

WPM software J / L

WPM software H

Surname

RTU

IP

RTU

IP

Min.

Max.

Hysteresis

172

5045

131

5004

unsigned 16 bit

IN / OUT

register

None

7.001

R / W

2

15th15

K

Target temperature

174

5047

149

5022

unsigned 16 bit

IN / OUT

register

None

7.001

R / W

Temp. Minim.

85

° C

Target temperature minimum

272

5145

-

-

unsigned 16 bit

IN / OUT

register

None

7.001

R / W

10

Intended toTemp.

° C

Target temperature maximum

175

5048

-

-

unsigned 16 bit

IN / OUT

register

None

7.001

R / W

Intended toTemp.

85

° C

swimming pool

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Range

Unit

WPM software J / L

WPM software H

Surname

RTU

IP

RTU

IP

Min.

Max.

Hysteresis

176

5049

-

unsigned 16 bit

IN / OUT

register

None

7.001

R / W

1

20th20

K

Target temperature

178

5051

-

unsigned 16 bit

IN / OUT

register

None

7.001

R / W

5

60

° C

2. Heat generator

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Range

Unit

WPM software J / L

WPM software H

Surname

RTU

IP

RTU

IP

Min.

Max.

Mixer hysteresis

48

20th20

unsigned 16 bit

IN

register

Divide

10

7.001

R / W

0.5

2.0

K

Mixer hysteresis

48

20th20

unsigned 16 bit

OUT

register

Multiply

10

7.001

0.5

2.0

K

Limit temperature parallel

147

5020

19th19

unsigned 16 bit

IN / OUT

register

None

7.001

R / W

-25

35

° C

Mixer runtime

148

5021

37

unsigned 16 bit

IN / OUT

register

None

7.001

R / W

30th30

85

Min

Selection of time functions

Access to the time functions, e.g. for blocking, lowering / increasing values or times, is achieved by switching over the address 192 (Modbus IP 5065).

Info

* ProgrammingNOTE
To change a reduction or increase value for the 1st heating circuit, the value 1 for reduction or 2 for increase is sent to address 192 (Modbus IP 5065). The required values for the 1st heating circuit can then be changed. Analogous to the description, this is done with the 2nd and 3rd heating circuit or blocks for e.g. hot water and swimming pool preparation.

Lowering / raising

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Range

Surname

RTU

IP

Min.

Max.

1st heating circuit

Subsidence

192

5065

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

1

1

Raising

192

5065

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

2

2

2nd heating circuit

Subsidence

192

5065

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

3

3

Raising

192

5065

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

4th44th

4

3rd heating circuit

Subsidence

192

5065

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

5

5

Raising

192

5065

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

6th66th

6

Time function

Start hour 1

193

5066

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

Start minute 1

194

5067

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

End of hour 1

195

5068

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

End of minute 1

196

5069

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

Start hour 2

197

5070

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

Start minute 2

198

5071

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

End of lesson 2

199

5072

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

End of minute 2

200

5073

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

Sunday

201

5074

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Monday

202

5075

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Tuesday

203

5076

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Wednesday

204

5077

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Thursday

205

5078

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Friday

206

5079

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Saturday

207

5080

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

0 = yes
1 = no
2 = time 1
3 = time 2

Reduction / increase value

208

5081

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

19th19

Active time 1

125

Boolean

OUT

Coil

None

1,001

R.

0

1

Active time 2

126

Boolean

OUT

Coil

None

1,001

R.

0

1

Hot water lock

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Range

Surname

RTU

IP

Min.

Max.

Hot water lock

192

5065

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

7th77th

7

Time function

Start hour 1

193

5066

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

Start minute 1

194

5067

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

End of hour 1

195

5068

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

End of minute 1

196

5069

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

Start hour 2

197

5070

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

Start minute 2

198

5071

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

End of lesson 2

199

5072

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

End of minute 2

200

5073

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

Sunday

201

5074

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Monday

202

5075

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Tuesday

203

5076

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Wednesday

204

5077

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Thursday

205

5078

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Friday

206

5079

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Saturday

207

5080

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

0 = yes
1 = no
2 = time 1
3 = time 2

Active time 1

125

Boolean

OUT

Coil

None

1,001

R.

0

1

Active time 2

126

Boolean

OUT

Coil

None

1,001

R.

0

1

Thermal disinfection

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Range

Unit

Surname

RTU

IP

Min.

Max.

Thermal disinfection

192

5065

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

8th88th

8

Time function

Start hour

193

5066

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

hour

Start minute

194

5067

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

min

Sunday

201

5074

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

1

Monday

202

5075

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

1

Tuesday

203

5076

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

1

Wednesday

204

5077

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

1

Thursday

205

5078

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

1

Friday

206

5079

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

1

Saturday

207

5080

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

1

0 = yes
1 = no

temperature

208

5081

unsigned 16 bit

IN / OUT

register

None

7.001

R / W

60

85

° C

active

125

boolean

OUT

Coil

None

1,001

R.

0

1

no

DHW circulation pump

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Range

Surname

RTU

IP

Min.

Max.

Circulation pump

192

5065

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

12th

12th

Time function

Start hour 1

193

5066

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

Start minute 1

194

5067

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

End of hour 1

195

5068

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

End of minute 1

196

5069

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

Start hour 2

197

5070

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

Start minute 2

198

5071

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

End of lesson 2

199

5072

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

End of minute 2

200

5073

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

Sunday

201

5074

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Monday

202

5075

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Tuesday

203

5076

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Wednesday

204

5077

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Thursday

205

5078

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Friday

206

5079

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

Saturday

207

5080

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

3

0 = yes
1 = no
2 = time 1
3 = time 2

Active time 1

125

Boolean

OUT

Coil

None

1,001

R.

0

1

Active time 2

126

Boolean

OUT

Coil

None

1,001

R.

0

1

Display ads

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Range

Surname

WPM software L

WPM software J

WPM software H

Min.

Max.

Status reports

103

43

14th

unsigned 16 bit

OUT

register

None

7.001

R.

0

30th

Heat pump lock

104

59

94

unsigned 16 bit

OUT

register

None

7.001

R.

1

42

Fault messages

105

42

13th

unsigned 16 bit

OUT

register

None

7.001

R.

1

31

Sensors

106

-

-

unsigned 16 bit

OUT

register

None

7.001

R.

1

27

Status reports

Value

Description

L software

H / J software

0

the endOffthe end

Off

1

the end

Heat pump on heatingOff

Heating

2

Heat

Heat pump on heatingHeating

Heating

3

swimming Swimming poolHeat pump

A swimming Swimming pool

4th4

Hot Domestic hot water

Heat pump One Domestic hot water

5

CoolCooling

Heat pump One heating + 2nd heat generator

6th6

Heat pump A swimming pool + 2nd heat generator

7th7

Heat pump One hot water + 2nd heat generator

8th8

Primary pump supply

9

Heating rinse

10

Defrost

Lock (see value for lock J software)

11th11

Flow monitoring

Lower limit of use

12th12

Low pressure limit

13th13

Low pressure shutdown

14th14

High pressure protection

15th15

Switching cycle lock

16

Minimum service life

17th17

Network load

18th18

Flow monitoring

19th19

2. Heat generator

20th20

Low pressure brine

21

Heat pump on defrost

22nd22

Upper limit of use

23

External lock

24

Operating mode switchover delay

Operating mode cooling

25th25

Frost protection cold

26th26

Lead limit

27

Dew point monitor

28

dew point

29

Passive cooling

30th30

Lock (see value for lock L software)

Lock


Value

Description

L software

J software

H software

0

1

Application limit HT

Outside temperature

2

Volume flow

Application limit WP

Bivalent alternative

3

Regenerative

Bivalent regenerative

4th4

Rewind

5

Function control

Hot water reheating

Hot water

6th6

Application limit HT

System control

System control

7th7

System control

EVU lock

EVU lock

8th8

Cooling switchover delay

9

Pump feed

High pressure

10

Minimum service life

Low pressure

11th11

Network load

Flow

12th

Switching cycle lock

Soft starter

13th

Hot water reheating

14th

Regenerative

15th

EVU lock

16

Soft starter

17th

Flow

18th

Application limit heat pump

19th

High pressure

20th

Low pressure

21

Application limit heat source

23

System limit

24

Load primary circuit

25th

External lock

33

EvD initialization

34

2. Heat generator released

35

Fault (see value for fault messages)

36

Pump feed

37

Minimum service life

38

Network load

39

Switching cycle lock

40

Application limit heat source

41

External lock

42

2. Heat generator

43

Fault (see value for fault messages)

Fault messages

Value

 Description

L software

H / J software

0

no mistake

no mistake

1

Error N17.1

2

Error N17.2

3

Error N17.3

Load compressor

4th4

Error N17.4

Coding

5

Low pressure

6th6

Electronic Ex valve

Antifreeze

7th7

Outside sensor short circuit or break

8th8

Return sensor short circuit or break

9

Hot water sensor short circuit or break

10

WPIO

Frost protection sensor short circuit or break

11th11

2nd heating circuit sensor short circuit or break

12th12

Inverter

Freeze protection sensor short circuit or break

13th13

WQIF

Low pressure brine

14th14

Motor protection primary

15th15

Sensors

Flow

16

Low pressure brine

Hot water

17th17

High pressure

19th19

 ! Primary circuit

Hot gas thermostat

20th20

 ! Defrost

Application limit cooling

21

 ! Low pressure brine

22nd22

 ! Hot water

23

 ! Load compressor

Temperature difference

24

 ! Coding

25th25

 ! Low pressure

26th26

 ! Frost protection

28

 ! High pressure

29

 ! Temperature difference

30th30

 ! Hot gas thermostat

31

 ! Flow

Sensors

Value

Description

L software

1

Outside sensor (R1)

2

Return sensor (R2)

3

Hot water sensor (R3)

4th4

Coding (R7)

5

Flow sensor (R9)

6th6

2nd heating circuit sensor (R5)

7th7

3rd heating circuit sensor (R13)

8th8

Regenerative sensor (R13)

9

Room sensor 1

10

Room sensor 2

11th11

Heat source outlet sensor (R6)

12th12

Heat source inlet sensor (R24) *

14th14

Collector sensor (R23)

15th15

Low pressure sensor (R25)

16

High pressure sensor (R26)

17th17

Room humidity 1

18th18

Room humidity 2

19th19

Frost protection cold sensor

20th20

Hot gas

21

Return sensor (R2.1)

22nd22

Swimming pool sensor (R20)

23

Flow sensor cooling passive (R11)

24

Return flow sensor cooling passive (R4)

26th26

Solar cylinder sensor (R22)

28

Demand sensor for heating (R2.2)

29

RTM Econ

30th30

Demand sensor cooling (R39)

Info

*NOTE
The heat source inlet is only available for heat pumps with an electronic expansion valve.

Entrances

Surname

Address

Datapoint type

Functions
code

R / W

Range

Unit

Min.

Max.

Photovoltaic feed

1

Unsigned 16 bit

0x04

R.

0

1

no

0 = no
1 = yes

Compressor (M1)

15th

Unsigned 16 bit

0x04

R.

0

1

no

Flange heating (E9)

16

Unsigned 16 bit

0x04

R.

0

1

no

Solar pump (M23)

17th

Unsigned 16 bit

0x04

R.

0

1

no

0 = off
1 = on

Info

NOTE
The status of the input on the heat pump manager can be queried via the data point inputs. It is not possible to write to this data point!

Outputs

KNX / EIB

Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Surname

WPM software J / L

WPM software H

Compressor 1

41

80

Boolean

OUT

Coil

None

1,001

R.

Compressor 2

42

81

Boolean

OUT

Coil

None

1,001

R.

Primary pump (M11) / fan (M2)

43

82

Boolean

OUT

Coil

None

1,001

R.

2nd heat generator (E10)

44

83

Boolean

OUT

Coil

None

1,001

R.

Heating pump (M13)

45

84

Boolean

OUT

Coil

None

1,001

R.

Hot water pump (M18)

46

85

Boolean

OUT

Coil

None

1,001

R.

Mixer (M21) open

47

86

Boolean

OUT

Coil

None

1,001

R.

Mixer (M21) CLOSED

48

87

Boolean

OUT

Coil

None

1,001

R.

Additional circulation pump (M16)

49

88

Boolean

OUT

Coil

None

1,001

R.

Flange heating (E9)

50

89

Boolean

OUT

Coil

None

1,001

R.

Heating pump (M15)

51

90

Boolean

OUT

Coil

None

1,001

R.

Mixer (M22) open

52

91

Boolean

OUT

Coil

None

1,001

R.

Mixer (M22) closed

53

92

Boolean

OUT

Coil

None

1,001

R.

Swimming pool pump (M19)

56

95

Boolean

OUT

Coil

None

1,001

R.

Collective fault message (H5)

57

-

Boolean

OUT

Coil

None

1,001

R.

Heating pump (M14)

59

94

Boolean

OUT

Coil

None

1,001

R.

Cooling pump (M17)

60

99

Boolean

OUT

Coil

None

1,001

R.

Heating pump (M20)

61

-

Boolean

OUT

Coil

None

1,001

R.

Changeover room thermostats heating / cooling (N9)

66

96

Boolean

OUT

Coil

None

1,001

R.

Primary pump cooling (M12)

68

98

Boolean

OUT

Coil

None

1,001

R.

Solar pump (M23)

71

-

Boolean

OUT

Coil

None

1,001

R.

Info

NOTE
In the event of a change, the status of the output is sent by the heat pump manager via the data points outputs. It is not possible to write to this data point!

Time alignment

Using the time synchronization, it is possible to write the current date and time via the interface. So that the change is accepted by the heat pump manager, the value 1 must be written to the associated "set register" immediately after the time has been written. Only then will the change be applied. The value of the "set register" is automatically reset to the value 0 after writing.

KNX / EIB


Modbus

Modbus

Address

Datapoint type

IN / OUT

COIL / REG

Conversion Rule

Conversion Value

DPT

R / W

Range

Surname

RTU

IP

Min.

Max.

hour

133

5006

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

23

set hour

102

Boolean

IN

Coil

None

1,001

W.

minute

134

5007

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

59

set minute

103

Boolean

IN

Coil

None

1,001

W.

month

135

5008

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

1

12th

set month

105

Boolean

IN

Coil

None

1,001

W.

weekday

136

5009

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

1

7th

1 = Monday
2 = Tuesday
3 = Wednesday
4 = Thursday
5 = Friday
6 = Saturday
7 = Sunday

set day of the week

107

Boolean

IN

Coil

None

1,001

W.

Day

137

5010

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

1

31

set day

104

Boolean

IN

Coil

None

1,001

W.

year

138

5011

Unsigned 16 bit

IN / OUT

register

None

7.001

R / W

0

99

set year

106

Boolean

IN

Coil

None

1,001

W.

Info

*NOTE
A time comparison is only possible from software versions J / L.

Function descriptions

In this chapter, some functional descriptions, their implementation and recommendations are collected and explained.

Room temperature control Smart-RTC +

From software version WPM_L23.1 it is possible to use the function of the intelligent room temperature control Smart-RTC + via the BMS interface available on the heat pump manager with the Modbus TCP protocol.

The values of the room temperature, the room humidity (for cooling) and the target room temperature of a maximum of 10 rooms must be sent to the heat pump manager via Modbus TCP. The heat pump manager uses these values to calculate the maximum system temperature required for heating and the minimum possible system temperature for silent cooling, taking the dew point into account.

Necessary settings on the heat pump manager

To use the BMS interface for the intelligent room temperature control Smart-RTC +, additional settings must be made or adjusted on the heat pump manager.

Software version

Pre-configuration menu

Submenu

Setting value

from WPM_L23.1

with the key combination «menu"+"ESC" Select

1st heating circuit

Heating or heating / silent cooling

1st heating / cooling circuit heating control via

Room temperature

1. Heating / cooling circuit heating room control

BMS

1. Heating / cooling circuit cooling room control

BMS

1. Heating / cooling circuit Number of room controls

01-10

When using an additional 2nd heating or heating / cooling circuit, the settings must be made in the same way as for the 1st heating circuit.

Software version

Pre-configuration menu

Submenu

Setting value

from WPM_L23.1

with the key combination «menu"+"ESC" Select

2nd heating circuit

Heating or heating / silent cooling

2nd heating / cooling circuit heating control via

Room temperature

2. Heating / cooling circuit heating room control

BMS

2. Heating / cooling circuit cooling room control

BMS

2nd heating / cooling circuit number of room controls

01-10

Note

IMPORTANT
The number of room controllers must be adapted to the number of Modbus TCP room sensors, which should also send values to the heat pump manager. The heat pump manager can process values from a maximum of 10 room controllers.

Room control data points

Since only a limited number of addresses are available, the time function switch from Chapter is required to write the values for the rooms "Selection of time functions" utilized. The addresses 50 - 59 for the 1st heating / cooling circuit and 60 - 69 for the 2nd heating / cooling circuit are available for access. A switchover takes place via the object DU_ZF_Wert.

Surname

Data point

index

R / W

Range

Unit

Min.

Max.

Room addresses 1st heating / cooling circuit

DU_ZF_Wert

5065

R / W

50

59

no

Room addresses 2nd heating / cooling circuit

DU_ZF_Wert

5065

R / W

60

69

no

Room temperature 50-69 BMS

E_Raum1_T

11th11

R / W

100

500

0.1 ° C

Room humidity 50-69 BMS

E_Raum1_Feu

13th13

R / W

200

900

0.1%

Set room temperature 50-69 BMS

P_Raum_Soll

5081

R / W

100

300

0.1 ° C

Room clearance 50-69 BMS

Raum_Frei_HzK

5164

R / W

1

3

no

1 = heating (cooling blocked)
3 = heating and cooling

Example for writing the room values

The following table relates to the group addresses in the sample project.

Surname

e.g. Group Address

Read number of rooms

14/5/1 (sensor)

Switch room address 50 - 59

14/5/2 (actuator)

Write actual room temperature RIT addr. 50 - 59

14/5/4 (actuator)

Write actual room humidity RIF addr. 50 - 59

14/5/6 (actuator)

Write room target temperature RST addr. 50 - 59

14/5/8 (actuator)

Write room release RFG addr. 50 - 59

14/5/10 (actuator)

The address (14/5/2) is switched over to transfer the room values. The following description is intended to represent one possibility of such an implementation. The room values are written to the heat pump manager every 1 minute per room. With 10 rooms, this means a maximum processing time of 10 minutes. This lead time is not a problem with the small changes in room values and will not limit comfort.

Module 1 - Switching the room addresses

In module 1, a counter is first created which counts up by +1 every minute (pulse for minute). The count starts at 50 and ends with the number of room controllers set (sensor 14/5/1). After the number of set room controllers has been reached, counting starts again at address 50. This count value is written to actuator 14/5/2 every minute. At the same time, marker 1 (AI memory flags 1) is also filled with the counter value. Flag 3 (AI memory flags 3) triggered with the minute pulse. Both flags are required in module 2. The input M with the constant 0 means that the counter starts again at 50 when the number of set room controllers is reached and does not stop when the set room controllers are reached.

Module 2 - Delayed writing of the room values

After switching the room addresses with module 1, the writing of the values via actuators 14/5/4 (room temperature), 14/5/6 (room humidity), 14/5/8 (target room temperature) and 14 / is delayed by 3 seconds. 5/10 (room clearance). For this, marker 1 (AI memory flags 1) and marker 3 (AI memory flags 3) from step 1 are required. First, a delayed pulse by 3 seconds (delayed time 3 sec.) Is filled via marker 3 (AI memory flags 3). The delayed pulse triggers the analogue memory, which is already filled with marker 1 (AI memory flags 1) count value from module 1. If the delayed pulse is triggered, the value is written from the analogue memory to marker 2 (AI memory flags 2). The value in marker 2 (AI memory flags 2) is still required in module 3.

Module 3 - Compare the room address to be written

The marker 2 (AI memory flags 2) from module 2 contains the current value of the room address that is to be written. So that the correct trigger of the room address is triggered, the room address from marker 2 (AI memory flags 2) must be compared. The marker 2 (AI memory flags 2) is compared with the constant 50 (Constant 50). If the value is the same, another marker 50 (AI memory flags 50) is set. The marker 50 (AI memory flags 50) is required in module 4 and triggers the trigger there.

Info

NOTE
This example only shows the comparison of room address 50 and must be created for each room address 50 - 59 to be written.

Module 4 - Writing the room values to the buffer

Module 4 is explained using the example of the target room temperature for room address 50 (Room-set-temperature 50). First, the target room temperature (Room-set-temperature 50) is multiplied by the factor x10. This is necessary because only integers (*) are written. The result is written to an analogue memory. If the marker 50 (AI memory flags 50) is triggered from step 3, the number in the analog memory (analogue memory) is written to the marker RST 50 (AI memory flags RST 50), which in turn simultaneously drives the actuator 14/5 / 8 triggers for the target room temperature.

Info

*NOTE
If the room values in the Modbus TCP protocol are already available as an integer and not as a decimal number, the value does not have to be multiplied by the factor x10.

Info

NOTE
This example shows the storage of the target room temperature for address 50 and must be created for all other room values (room humidity, actual room temperature and room release) as in the figure, step 4!

Module 5 - Writing the room values to the heat pump manager

Module 5 shows how the room values are triggered in the actuator. It stands
RIT => actual room temperature
RIF => actual room humidity
RST => target room temperature
RFG => room release.

summary

The modules 1 - 5 serve as an example and represent a possibility for the implementation of the description of the room values. The process was deliberately divided into individual modules so that the process can be explained as simply as possible. The modules shown can also be combined, structured differently, or other paths can be selected.

Smart-Grid / SG Ready

The use of photovoltaic electricity ultimately represents a load-variable tariff, since the heat pump can be operated with inexpensive electricity with photovoltaic yield. In this case, a digital input for "green" electricity can be connected on the heat pump manager. In this operating state, the heat pump runs in increased mode for room heating (return target temperature + increase value) and hot water preparation (maximum temperature hot water). The possibility of release via the available interfaces is also given from heat pump manager software version L20.2. The wiring of the digital input is then not required to enable the function.

Info

NOTE
The smart grid function must be approved by customer service when the heat pump is commissioned!

Operating states

Condition

Address

Description

action

3

4th

Red

0

1

In this state, the heat pump runs in reduced mode for space heating and hot water generation.

  • the adjustable reduction value of the respective heating circuit applies to room heating

  • The adjustable minimum hot water temperature applies to hot water generation

yellow

0

0

In this state, the heat pump runs in the set normal mode.

green

1

0

In this state, the heat pump runs in increased mode for space heating and hot water preparation.

  • the adjustable increase value of the respective heating circuit applies to room heating

  • The adjustable maximum hot water temperature applies to hot water generation *

  • In the case of bivalent-renewable systems, the heat pump is not blocked; the heat pump receives priority 1 in this state

Info

*NOTE
The maximum hot water temperature can be limited by the stored "maximum possible hot water temperature"!

Implementation on the heat pump manager

Address

Datapoint type

IN / OUT

Conversion Rule

Conversion Value

DPT

R / W

Unit

Surname

WPM software L

Operating status "green"

3

Boolean

IN / OUT

None

1,001

R / W

no

Operating status "red"

4th4

Boolean

IN / OUT

None

1,001

R / W

no

Info

NOTE
From WPM software L20.2 it is possible to write to this data point in order to be able to trigger a corresponding action via the interface!

Contact

For further questions, information and suggestions, please send an email to:

ferndiagnose@gdts.one

with the additional information of:

  • Device designation

  • Software version