NWPM Modbus TCP (EN)

Owned by lukas.rammensee
Last updated: Oct 21, 2024 by Bär Tino
20 min read

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.

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

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

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

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

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 /

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

 

Address

Datapoint type

COIL/REG

R/W

Unit

Surname

WPM software J / L

WPM software H

Outside temperature (R1)

1

27

signed 16 bit

register

R

° C

Return temperature (R2)

2

29

signed 16 bit

register

R

° C

Return temperature setpoint

53

28

signed 16 bit

register

R

° C

Hot water temperature (R3)

3

30

signed 16 bit

register

R

° C

Set hot water temperature

58

40

signed 16 bit

register

R

° C

Flow temperature (R9)

5

31

signed 16 bit

register

R

° C

Heat source inlet temperature (R24) *

6

-

signed 16 bit

register

R

° C

Heat source outlet temperature (R6)

7

41

signed 16 bit

register

R

° C

Target temperature 2nd heating circuit

54

32

signed 16 bit

register

R

° C

Temperature 2nd heating circuit (R5)

9

33

signed 16 bit

register

R

° C

Target temperature 3rd heating circuit

55

34

signed 16 bit

register

R

° C

Temperature 3rd heating circuit (R13)

10

35

signed 16 bit

register

R

° C

Room temperature 1 / RT-RTH Econ

11

36

signed 16 bit

register

R

° C

Room temperature 2

12

38

signed 16 bit

register

R

° C

Room humidity 1 / RT-RTH Econ

13

37

unsigned 16 bit

register

R

° C

Room humidity 2

14

39

unsigned 16 bit

register

R

° C

Passive cooling

Flow temperature (R11)

19

42

signed 16 bit

register

R

° C

Return temperature (R4)

20

43

signed 16 bit

register

R

° C

Passive / active cooling

Return temp. according to primary circuit (R24)

21

-

signed 16 bit

register

R

° C

Solar

Collector sensor (R23)

10

-

signed 16 bit

register

R

° C

Solar storage tank (R22)

23

-

signed 16 bit

register

R

° C

Ventilation

Outside air temperature

120

-

signed 16 bit

register

R

° C

Supply air temperature

121

-

signed 16 bit

register

R

° C

Exhaust air temperature

122

-

signed 16 bit

register

R

° C

Exhaust air temperature

123

-

signed 16 bit

register

R

° C

Speed of supply air fan

125

-

signed 16 bit

register

R

1 / min

Exhaust fan speed

126

-

signed 16 bit

register

R

1 / min

history

 

Addres

Datapoint type

COIL/REG

R/W

Unit

Surname

WPM software J / L

WPM software H

Compressor 1

72

64

unsigned 16 bit

register

R

hour

Compressor 2

73

65

unsigned 16 bit

register

R

hour

Primary pump / fan (M11)

74

66

unsigned 16 bit

register

R

hour

2nd heat generator (E10)

75

67

unsigned 16 bit

register

R

hour

Heating pump (M13)

76

68

unsigned 16 bit

register

R

hour

Hot water pump (M18)

77

69

unsigned 16 bit

register

R

hour

Flange heating (E9)

78

70

unsigned 16 bit

register

R

hour

Swimming pool pump (M19)

79

71

unsigned 16 bit

register

R

hour

Additional circulation pump (M16)

71
from L12

-

unsigned 16 bit

register

R

hour

Amount of heat* Heating 1-4

5096

5101

unsigned 16 bit

register

R

kWh

Amount of heat* Heating 5-8

5097

5102

unsigned 16 bit

register

R

kWh

Amount of heat* Heating 9-12

5098

5103

unsigned 16 bit

register

R

kWh

Amount of heat* Hot water 1-4

5099

5104

unsigned 16 bit

register

R

kWh

Amount of heat* Hot water 5-8

5100

5105

unsigned 16 bit

register

R

kWh

Amount of heat* Hot water 9-12

5101

5106

unsigned 16 bit

register

R

kWh

Amount of heat* Swimming pool 1-4

5102

5107

unsigned 16 bit

register

R

kWh

Amount of heat* Swimming pool 5-8

5103

5108

unsigned 16 bit

register

R

kWh

Amount of heat* Swimming pool 9-12

5104

5109

unsigned 16 bit

register

R

kWh

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

 

Address

Datapoint type

COIL/REG

R/W

Range

Unit

Surname

WPM software J/L

WPM software H

Min.

Max.

 

Parallel shift

5036

5002

unsigned 16 bit

register

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

register

R/W

15.0

30.0

° C

Fixed setpoint temperature

5037

5003

unsigned 16 bit

register

R/W

18

60

° C

Heating curve end point

5038

5015

unsigned 16 bit

register

R/W

20

70

° C

Hysteresis

47

22

unsigned 16 bit

register

R/W

0.5

5.0

K

Target temp. dyn. cooling

5043

5024

unsigned 16 bit

register

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.

 

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

20

70

° C

Fixed value temperature

212

5085

Unsigned 16 bit

IN / OUT

register

None

 

7.001

R / W

20

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

30

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

 

Modbus

 

Modbus

 

 

 

 

 

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

15

90

Hot water

 

Modbus

 

Modbus

 

 

 

 

 

 

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

15

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

Temp.

° C

Target temperature maximum

175

5048

-

-

unsigned 16 bit

IN / OUT

register

None

 

7.001

R / W

Temp.

85

° C

swimming pool

 

Modbus

 

Modbus

 

 

 

 

 

 

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

20

K

Target temperature

178

5051

-

unsigned 16 bit

IN / OUT

register

None

 

7.001

R / W

5

60

° C

2. Heat generator

 

Modbus

 

Modbus

 

 

 

 

 

 

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

20

unsigned 16 bit

IN

register

Divide

10

7.001

R / W

0.5

2.0

K

Mixer hysteresis

48

20

unsigned 16 bit

OUT

register

Multiply

10

7.001

 

0.5

2.0

K

Limit temperature parallel

147

5020

19

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

30

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).

Lowering / raising

 

Modbus

 

Modbus

 

 

 

 

 

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

4

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

6

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

19

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

 

Modbus

 

Modbus

 

 

 

 

 

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

7

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

 

Modbus

 

Modbus

 

 

 

 

 

 

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

8

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

Off

Off

1

Off

Heating

2

Heating

Heating

3

Swimming pool

Swimming pool

4

Domestic hot water

Domestic hot water

5

Cooling

Heat pump One heating + 2nd heat generator

6

 

Heat pump A swimming pool + 2nd heat generator

7

 

Heat pump One hot water + 2nd heat generator

8

 

Primary pump supply

9

 

Heating rinse

10

Defrost

Lock (see value for lock J software)

11

Flow monitoring

Lower limit of use

12

 

Low pressure limit

13

 

Low pressure shutdown

14

 

High pressure protection

15

 

Switching cycle lock

16

 

Minimum service life

17

 

Network load

18

 

Flow monitoring

19

 

2. Heat generator

20

 

Low pressure brine

21

 

Heat pump on defrost

22

 

Upper limit of use

23

 

External lock

24

Operating mode switchover delay

Operating mode cooling

25

 

Frost protection cold

26

 

Lead limit

27

 

Dew point monitor

28

 

dew point

29

 

Passive cooling

30

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

4

 

 

Rewind

5

Function control

Hot water reheating

Hot water

6

Application limit HT

System control

System control

7

System control

EVU lock

EVU lock

8

Cooling switchover delay

 

 

9

Pump feed

High pressure

 

10

Minimum service life

Low pressure

 

11

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

4

Error N17.4

Coding

5

 

Low pressure

6

Electronic Ex valve

Antifreeze

7

 

Outside sensor short circuit or break

8

 

Return sensor short circuit or break

9

 

Hot water sensor short circuit or break

10

WPIO

Frost protection sensor short circuit or break

11

 

2nd heating circuit sensor short circuit or break

12

Inverter

Freeze protection sensor short circuit or break

13

WQIF

Low pressure brine

14

 

Motor protection primary

15

Sensors

Flow

16

Low pressure brine

Hot water

17

 

High pressure

19

 ! Primary circuit

Hot gas thermostat

20

 ! Defrost

Application limit cooling

21

 ! Low pressure brine

 

22

 ! Hot water

 

23

 ! Load compressor

Temperature difference

24

 ! Coding

 

25

 ! Low pressure

 

26

 ! Frost protection

 

28

 ! High pressure

 

29

 ! Temperature difference

 

30

 ! Hot gas thermostat

 

31

 ! Flow

 

Sensors

Value

Description

L software

1

Outside sensor (R1)

2

Return sensor (R2)

3

Hot water sensor (R3)

4

Coding (R7)

5

Flow sensor (R9)

6

2nd heating circuit sensor (R5)

7

3rd heating circuit sensor (R13)

8

Regenerative sensor (R13)

9

Room sensor 1

10

Room sensor 2

11

Heat source outlet sensor (R6)

12

Heat source inlet sensor (R24) *

14

Collector sensor (R23)

15

Low pressure sensor (R25)

16

High pressure sensor (R26)

17

Room humidity 1

18

Room humidity 2

19

Frost protection cold sensor

20

Hot gas

21

Return sensor (R2.1)

22

Swimming pool sensor (R20)

23

Flow sensor cooling passive (R11)

24

Return flow sensor cooling passive (R4)

26

Solar cylinder sensor (R22)

28

Demand sensor for heating (R2.2)

29

RTM Econ

30

Demand sensor cooling (R39)

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

 

Outputs

 

Modbus

 

Modbus

 

 

 

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

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.



 

Modbus

 

Modbus

 

 

 

 

 

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

 

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

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

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

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

11

R / W

100

500

0.1 ° C

Room humidity 50-69 BMS

E_Raum1_Feu

13

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

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.

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.

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.

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

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"

4

Boolean

IN / OUT

None

 

1,001

R / W

no

Contact

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

ferndiagnose@gdts.one

with the additional information of:

  • Device designation

  • Software version






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