ISE smart connect Modbus Vaillant User manual

ise smart connect Modbus Vaillant
Product Manual
Product Manual
ise smart connect Modbus Vaillant
Order no. S-0002-007
Complete set for installation, consisting of the two system components:
- ise smart connect Modbus Vaillant and
- ise eBUS Adapter
Order no. 1-0009-000
- ise smart connect Modbus Vaillant
Order no. 2-0001-003
- ise eBUS Adapter
Valid for firmware version 1.0

ise smart connect Modbus Vaillant
Product Manual
Order No. S-0002-007
Product Manual Page 2 (45)
Table of contents
1Product description ...............................................................................................................5
1.1 Functions .................................................................................................................................5
1.2 Definitions and explanation of terms.........................................................................................5
1.3 Function schematic ..................................................................................................................6
2Installation, electrical connection and operation.................................................................7
2.1 Device design ise smart connect Modbus Vaillant....................................................................7
2.2 Safety notes.............................................................................................................................8
2.3 Mounting and electrical connection ..........................................................................................8
2.4 Device design ise eBUS Adapter............................................................................................10
2.5 Connection of the ise eBUS Adapter with the eBUS...............................................................11
3Configuration........................................................................................................................12
3.1 Configuration step 1 –IP configuration of the ise smart connect Modbus Vaillant ..................13
3.2 Configuration step 2 –Configuration of system dimensioning ................................................14
3.3 Configuration step 3 –Configuration of the Modbus TCP/IP port............................................15
4Modbus TCP/IP.....................................................................................................................16
4.1 Modbus function codes ..........................................................................................................16
4.2 Modbus exception codes........................................................................................................16
4.3 Modbus TCP/IP Gateway behaviour ......................................................................................16
4.4 Modbus TCP/IP unit IDs.........................................................................................................17
4.5 Modbus Registers ..................................................................................................................17
4.5.1 Unit ID 1: Vaillant geoTHERM/3 ......................................................................................17
4.5.1.1 Input Registers (R)...................................................................................................17
4.5.1.2 Holding Registers (R/W) ..........................................................................................19
4.5.2 Unit ID 2: Vaillant geoTHERM/3 domestic hot water........................................................19
4.5.2.1 Input Registers (R)...................................................................................................19
4.5.2.2 Holding Registers (R/W) ..........................................................................................19
4.5.3 Unit ID 3: Vaillant geoTHERM/3 auxiliary heater .............................................................20
4.5.3.1 Input Registers (R)...................................................................................................20
4.5.3.2 Holding Registers (R/W) ..........................................................................................20
4.5.4 Unit ID 4 –9: Vaillant VR60 heating circuit 4 –9 .............................................................20
4.5.4.1 Input Registers (R)...................................................................................................20
4.5.4.2 Holding Registers (R/W) ..........................................................................................21
4.5.5 Unit ID 12, 14 –18: Vaillant VR90 heating circuit 2, 4 –8................................................21
4.5.5.1 Input Registers (R)...................................................................................................21
4.6 Datatypes...............................................................................................................................21
4.6.1 eBusErrorState................................................................................................................21
4.6.2 eBusError........................................................................................................................21
4.6.3 sensorState.....................................................................................................................22
4.6.4 status ..............................................................................................................................22
4.6.5 DTC_EHP .......................................................................................................................22
4.6.6 statusMessageEHP.........................................................................................................24
4.6.7 mixerDutyState................................................................................................................24
4.6.8 backup.............................................................................................................................24
4.6.9 opModeDHW...................................................................................................................25
4.6.10 opModeHC....................................................................................................................25

ise smart connect Modbus Vaillant
Product Manual
Order No. S-0002-007
Product Manual Page 3 (45)
5Commissioning....................................................................................................................26
5.1 Operation...............................................................................................................................26
5.2 LED status displays................................................................................................................27
5.2.1 LED status display upon device start-up..........................................................................27
5.2.2 LED status display in operation .......................................................................................28
5.3 Accessing the website of the device.......................................................................................29
5.4 Factory reset..........................................................................................................................29
5.4.1 Factory reset using the factory reset button on the device...............................................29
5.4.2 Factory reset using the website of the device..................................................................29
5.5 Firmware Update....................................................................................................................30
5.5.1 Firmware Update using the Website of the Device ..........................................................30
5.5.2 Local Update without Internet Access..............................................................................30
5.5.3 Firmware Version Numbers.............................................................................................30
6Technical data......................................................................................................................31
6.1 ise smart connect Modbus Vaillant.........................................................................................31
6.2 ise eBUS Adapter...................................................................................................................31
7Frequently asked questions (FAQ) .....................................................................................32
8Troubleshooting and support..............................................................................................33
8.1 Downloading log files if a problem occurs...............................................................................33
8.2 Device status page of the ise smart connect Modbus Vaillant ................................................33
8.3 The ise smart connect Modbus Vaillant does not work...........................................................34
9License agreement ise smart connect Modbus Vaillant software ....................................35
9.1 Definitions..............................................................................................................................35
9.2 Object of the agreement.........................................................................................................35
9.3 Rights of use of the ise smart connect Modbus Vaillant software ...........................................35
9.4 Restriction of rights of use......................................................................................................35
9.4.1 Copying, modification and transmission...........................................................................35
9.4.2 Reverse engineering and conversion technologies..........................................................35
9.4.3 Firmware and hardware...................................................................................................35
9.4.4 Transfer to a third party...................................................................................................36
9.4.5 Renting out, leasing out and sub-licensing ......................................................................36
9.4.6 Software creation ............................................................................................................36
9.4.7 The mechanisms of license management and copy protection........................................36
9.5 Ownership, confidentiality.......................................................................................................36
9.5.1 Documentation................................................................................................................36
9.5.2 Transfer to a third party...................................................................................................36
9.6 Changes, additional deliveries................................................................................................36
9.7 Warranty ................................................................................................................................36
9.7.1 Software and documentation...........................................................................................37
9.7.2 Limitation of warranty ......................................................................................................37
9.8 Liability...................................................................................................................................37
9.9 Applicable law........................................................................................................................37
9.10 Termination............................................................................................................................37
9.11 Subsidiary agreements and changes to the agreement..........................................................38
9.12 Exception...............................................................................................................................38
10 Open Source Software.........................................................................................................39

ise smart connect Modbus Vaillant
Product Manual
Order No. S-0002-007
Product Manual Page 4 (45)
11 GNU GENERAL PUBLIC LICENSE ......................................................................................41

ise smart connect Modbus Vaillant
Product description
Order No. S-0002-007
Product Manual Page 5 (45)
1 Product description
1.1 Functions
Control of a Vaillant geoTHERM/3 VWS220/3 –460/3 heat pump via Modbus TCP/IP.
Additional control of up to three Vaillant VR60 mixer modules and up to six Vaillant VR90 re-
mote control units.
Together with the ise eBUS Adapter, the ise smart connect Modbus Vaillant establishes the
connection between the Vaillant geoTHERM/3 heat pump and your building management sys-
tem (BMS) via Modbus TCP/IP.
Important note:
To ensure functional control, the use of the both system components is required. The ise smart
connect Modbus Vaillant can therefore only be used together with the ise eBUS Adapter.
The system components can be ordered as a set or individually (for replacement purposes).
A Vaillant geoTHERM VWS220/3 –460/3 heat pump is necessary in the installation. No other
heat pump is compatible.
Important!
The device must be supplied with voltage by a dedicated power supply unit. Do not use the aux-
iliary voltage output of a KNX power supply unit which is also supplying a KNX line.
1.2 Definitions and explanation of terms
ise eBUS Adapter
The ise eBUS Adapter is a system component to connect the Vaillant bus modular control with
the Modbus system. It connects:
- devices of the ise smart connect series for eBUS connection (in this case, ise smart connect
Modbus Vaillant) and
- the Vaillant system together
over a USB interface.
It is a specially designed system component for this use case.
Any other or extended use is considered improper.
Vaillant system
All components of the Vaillant heating system are described as the Vaillant system. One of
these components must be a geoTHERM VWS220/3 –460/3 heat pump, which will be re-
ferred to as geoTHERM/3 from now on. Additionally, the heating system can contain up to
three VR60 mixer modules and up to six VR90 remote control units:
Information on the operation, installation and any required accessories can be found in the
corresponding documents issued by Vaillant.
eBUS
The commands sent via Modbus TCP/IP are prepared via the ise smart connect Modbus Vail-
lant and the ise eBUS Adapter to enable communication with the Vaillant system via the eBUS.
Separate addressing of ise system components for the eBUS is not necessary.
The eBUS connection point is described in chapter 2.5 “Connection of the ise eBUS Adapter
with the eBUS”.
The relevant instructions for the installation on the eBUS provided by Vaillant (connec-
tion, procedures, cable selection, etc.) must be observed.

ise smart connect Modbus Vaillant
Product description
Order No. S-0002-007
Product Manual Page 6 (45)
1.3 Function schematic
eBUS
Modbus TCP/IP
Building Management
System (BMS)
Accessory
geoTHERM/3
VWS220/3 –460/3
USB

ise smart connect Modbus Vaillant
Installation, electrical connection and operation
Order No. S-0002-007
Product Manual Page 7 (45)
2 Installation, electrical connection and operation
2.1 Device design ise smart connect Modbus Vaillant
1
2
3
4
5
6
24 V DC
ise smart connect
Modbus
Vaillant
24VDC
8
APP
COM
00:00:00:00:00:00
1-0009-000
7
Figure 1: ise smart connect Modbus Vaillant.
1
Button for factory reset
The button can be used to execute a factory reset of the device.
2
Connection for
power supply
DC 24–30 V, 2 W (at 24 V)
On left: (+ / yellow)
On right: (–/ white)
3
LED (red)
Red: No function.
4
LED APP (green)
Green: Normal operation
Off/Flashing: For diagnosis code, see 5.2.1 / 5.2.2
5
LED COM (yellow)
Yellow: Normal operation, Modbus TCP/IP server running
(brief dark phases indicate Modbus TCP/IP telegram
traffic)
Off/Flashing: Error, Modbus TCP/IP server not running
6
Ethernet connection
LED 10/100 speed (green)
On: 100 Mbit/s
Off: 10 Mbit/s
LED link/ACT (orange)
On: Connection to IP network
Off: No connection
Flashing: Data reception on IP
7
USB connection
USB connection type A, establishes the connection to the Vaillant
system via the ise eBUS Adapter.
Use the supplied USB cable as standard. Please note that the use
of USB cables with a length of more than 3 m is generally not
permitted.
8
MicroSD card holder
No function.
Dimensions:
Width (W):
36 mm (2 HP)
Height (H):
90 mm
Depth (D):
74 mm

ise smart connect Modbus Vaillant
Installation, electrical connection and operation
Order No. S-0002-007
Product Manual Page 8 (45)
2.2 Safety notes
Electrical devices may only be installed and mounted by a qualified electrician. In doing so, the
applicable accident prevention regulations must be observed. Failure to observe the installation
instructions can result in damage to the device, fire or other dangers.
DANGER!
Electric shock if live parts are touched. Electric shock may lead to death.
Isolate connection cables before working on the device. Cover up live parts in the vicin-
ity!
IMPORTANT!
The device must be supplied with voltage by a dedicated power supply unit. Do not use
the auxiliary voltage output of a KNX power supply unit which is also supplying a KNX
line.
Please see the installation instructions enclosed with the device for more information.
2.3 Mounting and electrical connection
Mounting the device
The device is intended for fixed installation in indoor spaces and dry rooms.
Snap it on to the top-hat rail as per DIN EN 60715, vertical mounting;
network connections must face downward.
Observe temperature range (0 °C to +45 °C); do not install over heat-emitting devices and ensure
sufficient ventilation/cooling if necessary.
Connecting the device
Connect the external power supply to the connection terminal (2). We recommend to use the white-
yellow connection terminal.
Polarity: left/yellow: (+), white/right: (–).
Important: The device must be supplied with voltage by a dedicated power supply unit. Do
not use the auxiliary voltage output of a KNX power supply unit which is also supplying a
KNX line.
Connect the network connection to the RJ pin jack with the RJ45 plug (6) to enable Modbus TCP/IP
access.
Connect the ise eBUS adapter to the USB port (7) (use the supplied USB cable). Please note that
the use of USB cables with a length of more than 3 m is generally not permitted. When con-
necting an active ise smart connect Modbus Vaillant with the ise eBUS Adapter, the initialisation may
require up to three minutes. During this time, the ise smart connect Modbus Vaillant may restart.
Note: The use of the ise smart connect Modbus Vaillant requires the use of an ise eBUS
Adapter. This can be ordered as a set or individually (for replacement purposes).

ise smart connect Modbus Vaillant
Installation, electrical connection and operation
Order No. S-0002-007
Product Manual Page 9 (45)
Mounting/removing a cover cap
A cover cap can be mounted for protection of the power supply connections from dangerous voltage,
particularly in the connection area.
The cap is mounted with an attached power supply terminal and a connected power supply line to the
rear.
Mounting the cover cap: The cover cap is pushed over the supply terminal until it audibly en-
gages (cf. Figure 2: Mounting/removing a cover cap A).
Removing the cover cap: The cover cap is removed by pressing it in slightly on the side and
pulling it off to the front (cf. Figure 2: Mounting/removing a cover cap B).
Figure 2: Mounting/removing a cover cap.

ise smart connect Modbus Vaillant
Installation, electrical connection and operation
Order No. S-0002-007
Product Manual Page 10 (45)
2.4 Device design ise eBUS Adapter
Figure 3: ise eBUS Adapter
1
eBUS connection
Important note: The maximum length of the eBUS connection
cable is 125 m. Please see chapter 2.5 “Connection of the ise eBUS
Adapter with the eBUS”for the position of the eBUS connection. The
connection is protected against polarity reversal.
2
LED PWR (green)
Green: Minimum voltage from eBUS is connected
3
LED COM (green)
Green: Connection of ise smart connect Modbus Vaillant with eBUS
established
4
USB connection
Important note: The adapter cable for the USB port is equipped with a
mini USB-B angled plug. To prevent damage, the angled plug must
always be pulled out the front.
Use the supplied USB cable as standard. Please note that the use
of USB cables with a length of more than 3 m is generally not
permitted.
Please see the installation instructions enclosed with the device for more information.
Dimensions:
Width (W):
17.5 mm (1 HP)
Height (H):
90 mm
Depth (D):
74 mm
2
v
3
v
1
v
4
v

ise smart connect Modbus Vaillant
Installation, electrical connection and operation
Order No. S-0002-007
Product Manual Page 11 (45)
2.5 Connection of the ise eBUS Adapter with the eBUS
The heating technology supplier has installed a junction box in which an eBUS cable is laid from the
heating system. In this junction box, the company executing the building management system (BMS)
will establish the connection to the ise eBUS Adapter.
Figure 4: Junction box for the connection of the ise eBUS Adapter to the heating system.
The position of the junction box can be seen in the “Handover protocol from executing company for
heating, air conditioning, ventilation technology to the building technology planner”. The corresponding
information can be found in Point 4 "Position of eBUS connection point between Vaillant heating sys-
tem and Modbus Gateway" of the handover protocol.

ise smart connect Modbus Vaillant
Configuration
Order No. S-0002-007
Product Manual Page 12 (45)
3 Configuration
Configuration of the ise smart connect Modbus Vaillant system components is divided into the following
steps:
Preparations:
For explana-
tions, see
1 Installing ise eBUS Adapter. Connect the ise smart connect Modbus Vaillant
with the ise eBUS Adapter via the USB interface.
Use the supplied USB cable as standard. Please note that the use of USB
cables with a length of more than 3 m is generally not permitted.
Chapter 2
2 Mount ise smart connect Modbus Vaillant; connect it to auxiliary voltage.
Important note: Please ensure that the device is only supplied with voltage by
a dedicated power supply unit. Do not use the auxiliary voltage output of a
KNX power supply unit which is also supplying a KNX line.
Chapter 2.3
3 Connect the ise eBUS Adapter with the eBUS in the intended junction box.
Important note: The maximum length of the eBUS connection cable is 125 m.
Chapter 2.5
4 Install the ise smart connect Modbus Vaillant on the IP network and make
settings in the router of the IP network if necessary.
Configuration via website:
After installing the device and connecting the power supply and Ethernet, the device can be config-
ured via the website:
1 Set the IP address, the IP subnet mask and the default gateway address of
the ise smart connect Modbus Vaillant or select "DHCP active" to obtain
automatically an IP address from the router.
Chapter 3.1
2 Configuration of system dimensioning (additional data points and modules)
Chapter 3.2
3 Configuration of the Modbus TCP/IP port if necessary (default port is 502).
Chapter 3.3
4 Configuration of your building management system (BMS) to access the ise
smart connect Modbus Vaillant with a Modbus TCP/IP client.
Chapter 4

ise smart connect Modbus Vaillant
Configuration
Order No. S-0002-007
Product Manual Page 13 (45)
3.1 Configuration step 1 –IP configuration of the ise smart connect Modbus
Vaillant
By default, the ise smart connect Modbus Vaillant requests its IP configuration via DHCP. If the default
setting is used, a DHCP server will assign a valid IP address to the ise smart connect Modbus Vaillant.
If a DHCP server is not available for this setting, the device starts up after a short time with an AutoIP
address (address range from 169.254.1.0 to 169.254.254.255).
As soon as a DHCP server will be available, a new IP address will be automatically assigned to the de-
vice.
If it is necessary to use static IP setup, go to the “IP network settings” page of the device website. On
this page, you can switch from DHCP to Static IP Setup in the “IPv4 settings”. You simply unselect the
“DHCP active” check box to enable manual editing of the IP settings. The IP setup includes the follow-
ing parameters:
IP address,
subnet mask,
address of the default gateway,
an optional name server (if it is available from a different IP address as your default gateway).
After changing the configuration, you will have to save the settings. The device will then apply the
changes. Otherwise, the website will indicate and show you the incorrect parameter.

ise smart connect Modbus Vaillant
Configuration
Order No. S-0002-007
Product Manual Page 14 (45)
3.2 Configuration step 2 –Configuration of system dimensioning
The heating system dimensioning can easily be configured via the device website.
In addition to the Vaillant geoTHERM/3 heat pump, you can also control up to three Vaillant VR60
mixer modules and up to six Vaillant VR90 remote control units. The use of the geoTHERM/3 heat
pump can be specified as well. You can activate additional data points for hot water usage and for an
electrical auxiliary heater.
The default configuration has no additional data points and modules configured, which means that no
checkbox is checked and the dots for the corresponding eBUS states are grey.
Please refer to the handover protocol of the executing company for heating, air conditioning, ventilation
technology to the building technology planner to check, which units are available in the installation and
need to be enabled.
To enable additional data points and modules you have to check the corresponding checkbox, press
“Save” and confirm the reboot of the device. When the website is accessible again, you can observe
the current eBUS state of your modules (including the geoTHERM/3 heat pump).
During the start-up, the eBUS state may be “unknown”. This means that the gateway has not checked
yet, if the module is present in the eBUS network.
A green dot (“OK”) means that the module is accessible via eBUS and there are currently no communi-
cation errors.
A red dot (“Error”) means that the module is not accessible via eBUS or there is currently a communi-
cation error.
For the previous communication error (if any), the description of the last occurred error is displayed as
well for diagnostic purposes.

ise smart connect Modbus Vaillant
Configuration
Order No. S-0002-007
Product Manual Page 15 (45)
3.3 Configuration step 3 –Configuration of the Modbus TCP/IP port
If needed, you can change the Modbus TCP/IP port of the device on the website. You can find this op-
tion on the Vaillant components subpage. By default, the port is 502. It is possible to configure a port in
the range between 2,000 and 4,000.
After changing the port, press Save and confirm the reboot of the device. When the website is accessi-
ble again, the device uses the newly configured Modbus TCP/IP port.

ise smart connect Modbus Vaillant
Modbus TCP/IP
Order No. S-0002-007
Product Manual Page 16 (45)
4 Modbus TCP/IP
4.1 Modbus function codes
The following function codes are supported via Modbus TCP/IP:
Function
code
Hex
Name
03
0x03
Read Holding Registers
04
0x04
Read Input Registers
06
0x06
Write Single Register
16
0x10
Write Multiple Registers
4.2 Modbus exception codes
The following exception codes can be generated by the gateway:
Exception
code
Hex
Name
Description
01
0x01
Illegal Function Code
The function code is unknown to the server
02
0x02
Illegal Data Address
Data Address not accessible (dependant on the request)
03
0x03
Illegal Data Value
Data Value not supported (dependant on the request)
04
0x04
Server Failure
The server failed during the execution
11
0x0B
Gateway Target
Device Failed To
Respond
Indicates that no response was obtained from the target
device (unit ID).
Usually means that the device (unit ID) is not present on
the network.
4.3 Modbus TCP/IP Gateway behaviour
All addresses are one-based. If you request register 1, you get the value of register 1.
For 32-bit data points, the first register contains the least significant word.
32-bit data points (two registers) can only be written contiguously with function code 0x10 (Write
Multiple Registers). Write requests, which try to set only 16-bit (one register) of a 32-bit data
point (two registers) are responded with exception code 0x02 (Illegal Data Address).
Requests to non-existing/inactive unit IDs are responded with exception code 0x0B (Gateway
Target Device Failed To Respond).

ise smart connect Modbus Vaillant
Modbus TCP/IP
Order No. S-0002-007
Product Manual Page 17 (45)
4.4 Modbus TCP/IP unit IDs
The Modbus TCP/IP gateway manages the following unit IDs:
Unit ID
Description
1
Vaillant geoTHERM/3
2
Vaillant geoTHERM/3 domestic hot water
3
Vaillant geoTHERM/3 auxiliary heater
4
Vaillant VR60 heating circuit 4
5
Vaillant VR60 heating circuit 5
6
Vaillant VR60 heating circuit 6
7
Vaillant VR60 heating circuit 7
8
Vaillant VR60 heating circuit 8
9
Vaillant VR60 heating circuit 9
12
Vaillant VR90 heating circuit 2
14
Vaillant VR90 heating circuit 4
15
Vaillant VR90 heating circuit 5
16
Vaillant VR90 heating circuit 6
17
Vaillant VR90 heating circuit 7
18
Vaillant VR90 heating circuit 8
4.5 Modbus Registers
4.5.1 Unit ID 1: Vaillant geoTHERM/3
4.5.1.1 Input Registers (R)
Addr.
Name
Datatype
Polling
interval
[min]
Range
Reso-
lution
Unit
1
eBUS error
eBusErrorState
-
2
eBUS last error
eBusError
-
3
Air brine outlet
temperature sensor state
sensorState
2
4-5
Air brine outlet
temperature sensor value
IEEE 754 single float
2
-2048.0 –
2047.9
0.1
°C
6
Brine inlet
temperature sensor state
sensorState
2
7-8
Brine inlet
temperature sensor value
IEEE 754 single float
2
-2048.0 –
2047.9
0.1
°C
9
Environment circuit:
Pressure sensor state
sensorState
2
10-11
Environment circuit:
Pressure sensor value
IEEE 754 single float
2
0 –65.5
0.1
bar
12
Status fan / brine pump
status
2
13-14
Compressor starts
uint32_t
60
15-16
Compressor operating
hours
uint32_t
60
h
17
Compressor is running
status
2
18
Pressure compressor high
sensor state
sensorState
2
19-20
Pressure compressor high
sensor value
IEEE 754 single float
2
0 –65.5
0.1
bar

ise smart connect Modbus Vaillant
Modbus TCP/IP
Order No. S-0002-007
Product Manual Page 18 (45)
Addr.
Name
Datatype
Polling
interval
[min]
Range
Reso-
lution
Unit
21
Pressure compressor low
sensor state
sensorState
2
22-23
Pressure compressor low
sensor value
IEEE 754 single float
2
0 –65.5
0.1
bar
24
Compressor outlet
temperature sensor state
sensorState
2
25
Compressor outlet
temperature sensor value
int16_t
2
-2048 –
2048
°C
26
External top cylinder
temperature sensor state
sensorState
2
27
External top cylinder
temperature sensor value
int16_t
2
-2048 –
2048
°C
28
External bottom cylinder
temperature sensor state
sensorState
2
29
External bottom cylinder
temperature sensor value
int16_t
2
-2048 –
2048
°C
30
Error history 1
DTC_EHP
15
31
Error history 2
DTC_EHP
15
32
Error history 3
DTC_EHP
15
33
Error history 4
DTC_EHP
15
34
Error history 5
DTC_EHP
15
35
Error history 6
DTC_EHP
15
36
Error history 7
DTC_EHP
15
37
Error history 8
DTC_EHP
15
38
Error history 9
DTC_EHP
15
39
Error history 10
DTC_EHP
15
40
Status heat pump
statusMessageEHP
2
41-42
Earned environment
energy
uint32_t
60
kWh
43
Outside temperature
sensor state
sensorState
15
44
Outside temperature
sensor value
int16_t
15
-2048 –
2048
°C
45
Flow temperature
sensor state
sensorState
2
46
Flow temperature
sensor value
int16_t
2
-2048 –
2048
°C
47
Return temperature
sensor state
sensorState
2
48
Return temperature
sensor value
int16_t
2
-2048 –
2048
°C
49
Heating circuit pressure
sensor state
sensorState
2
50-51
Heating circuit pressure
sensor value
IEEE 754 single float
2
0 –65.5
0.1
bar
52
Energy integral value
int16_t
2
°min
53
VF2 flow temperature
sensor state
sensorState
2
54
VF2 flow temperature
sensor value
int16_t
2
-2048 –
2048
°C

ise smart connect Modbus Vaillant
Modbus TCP/IP
Order No. S-0002-007
Product Manual Page 19 (45)
Addr.
Name
Datatype
Polling
interval
[min]
Range
Reso-
lution
Unit
55
Mixer activation
mixerDutyState
2
56
Heating circuit
pump status
status
2
4.5.1.2 Holding Registers (R/W)
Addr.
Name
Datatype
Polling
interval
[min]
Range
Reso-
lution
Unit
57
Brine pump speed control
uint16_t
2
7 –100
%
58
Compressor hysteresis
uint16_t
2
3 –15
K
59
Energy integral since
compressor started
int16_t
2
-250 –-5
°min
60
CH pump speed control
uint16_t
2
30 –100
%
61
Heating circuit operating
mode
opModeHC
2
62
Day target room
temperature
uint16_t
2
5 –50
°C
63
Set-back temperature
uint16_t
2
5 –50
°C
64-65
Heating curve
IEEE 754 single float
2
0.1 –4.0
0.05
66
Maximum target flow
temperature
uint16_t
2
15 –80
°C
67
Minimum target flow
temperature
uint16_t
2
15 –80
°C
68
Outside temperature
switch-off threshold
uint16_t
2
5 –50
°C
4.5.2 Unit ID 2: Vaillant geoTHERM/3 domestic hot water
4.5.2.1 Input Registers (R)
Addr.
Name
Datatype
Polling
interval
[min]
Range
Reso-
lution
Unit
1
Cylinder hot water
temperature sensor state
sensorState
2
2
Cylinder hot water
temperature sensor value
int16_t
2
-2048 –
2048
°C
3
3-way valve setting
status
2
4.5.2.2 Holding Registers (R/W)
Addr.
Name
Datatype
Polling
interval
[min]
Range
Reso-
lution
Unit
4
Hot water circuit
operating mode
opModeDHW
2
5
Target hot water
temperature
uint16_t
2
30 –65
°C
6
Maximum hot water
target value
uint16_t
2
40 –75
°C

ise smart connect Modbus Vaillant
Modbus TCP/IP
Order No. S-0002-007
Product Manual Page 20 (45)
4.5.3 Unit ID 3: Vaillant geoTHERM/3 auxiliary heater
4.5.3.1 Input Registers (R)
Addr.
Name
Datatype
Polling
interval
[min]
Range
Reso-
lution
Unit
1-2
Backup commutations
uint32_t
60
3-4
Backup heater operating
hours
uint32_t
60
h
5
Backup heater output
status
2
4.5.3.2 Holding Registers (R/W)
Addr.
Name
Datatype
Polling
interval
[min]
Range
Reso-
lution
Unit
6
Backup hysteresis
uint16_t
2
1 –20
K
7
Energy integral since
backup heater started
int16_t
2
-740 –-50
°min
8
Bivalent temperature
int16_t
2
-9 –10
°C
9
Backup heater mode for
CH
backup
2
10
backup heater mode for
DHW
backup
2
4.5.4 Unit ID 4 –9: Vaillant VR60 heating circuit 4 –9
4.5.4.1 Input Registers (R)
Addr.
Name
Datatype
Polling
interval
[min]
Range
Reso-
lution
Unit
1
eBUS error
eBusErrorState
2
eBUS last error
eBusError
3
VF2 flow temperature
sensor state
sensorState
2
4
VF2 flow temperature
sensor value
int16_t
2
-2048 –
2048
°C
5
Mixer activation
mixerDutyState
2
6
Heating circuit
pump status
status
2