---
title: "KNX Group Object DPT14"
canonical: "https://docs.cuesystem.com/space/CVCHELP/525336613/KNX%20Group%20Object%20DPT14"
format: markdown
---
> Macro (toc)
---
# Description
KNX Group Object DPT14 is defined for floating point values with greater accuracy. Various data point dimensions have been defined depending on the different physical variables. The IEEE floating point format is used in accordance with IEEE 754 so that higher values than for DPT9 can be transferred and compatibility with other systems using this format is ensured.
| | | | | |
| --- | --- | --- | --- | --- |
| | Octet 4 - MSB | Octet 3 | Octet 2 | Octet 1 - LSB |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| Field | Float Value |
The values are encoded in the IEEE 32-bit floating point format according to IEEE 754.
# DPT Dimensions
| | | | |
| --- | --- | --- | --- |
| DPT Dimensions | Name | Unit | Resol. |
| 14.000 | acceleration (m/s²) | m/s² | 1 m/s² |
| 14.001 | angular acceleration (rad/s²) | rad/s² | 1 rad/s² |
| 14.002 | activation energy (J/mol) | J/mol | 1 J/mol |
| 14.003 | radioactive activity (1/s) | 1/s | 1 1/s |
| 14.004 | amount of substance (mol) | mol | 1 mol |
| 14.005 | amplitude | - | - |
| 14.006 | angle (radiant) | rad | 1 rad |
| 14.007 | angle (degree) | ° | 1 ° |
| 14.008 | angular momentum (Js) | Js | 1 Js |
| 14.009 | angular velocity (rad/s) | rad/s | 1 rad/s |
| 14.010 | area (m*m) | m² | 1 m² |
| 14.011 | capacitance (F) | F | 1 F |
| 14.012 | flux density (C/m²) | C/m² | 1 C/m² |
| 14.013 | charge density (C/m³) | C/m³ | 1 C/m³ |
| 14.014 | compressibility (m²/N) | m²/N | 1 m²/N |
| 14.015 | conductance (S) | S | 1 S |
| 14.016 | conductivity (S/m) | S/m | 1 S/m |
| 14.017 | density (kg/m³) | kg/m³ | 1 kg/m³ |
| 14.018 | electric charge (C) | C | 1 C |
| 14.019 | electric current (A) | A | 1 A |
| 14.020 | electric current density (A/m²) | A/m² | 1 A/m² |
| 14.021 | electric dipole moment (Cm) | Cm | 1 Cm |
| 14.022 | electric displacement (C/m²) | C/m² | 1 C/m² |
| 14.023 | electric field strength (V/m) | V/m | 1 V/m |
| 14.024 | electric flux (C) | c | 1 c |
| 14.025 | electric flux density (C/m²) | C/m² | 1 C/m² |
| 14.026 | electric polarization (C/m²) | C/m² | 1 C/m² |
| 14.027 | electric potential (V) | V | 1 V |
| 14.028 | electric potential difference (V) | V | 1 V |
| 14.029 | electromagnetic moment (Am²) | Am² | 1 Am² |
| 14.030 | electromotive force (V) | V | 1 V |
| 14.031 | energy (J) | J | 1 J |
| 14.032 | force (N) | N | 1 N |
| 14.033 | frequency (Hz) | Hz | 1 Hz |
| 14.034 | angular frequency (rad/s) | rad/s | 1 rad/s |
| 14.035 | heat capacity (J/K) | J/K | 1 J/K |
| 14.036 | heat flow rate (W) | W | 1 W |
| 14.037 | heat quantity | J | 1 J |
| 14.038 | impedance (Ω) | Ω | 1 Ω |
| 14.039 | length (m) | m | 1 m |
| 14.040 | light quantity (J) | J | 1 J |
| 14.041 | luminance (cd/m²) | cd/m² | 1 cd/m² |
| 14.042 | luminous flux (lm) | lm | 1 lm |
| 14.043 | luminous intensity (cd) | cd | 1 cd |
| 14.044 | magnetic field strength (A/m) | A/m | 1 A/m |
| 14.045 | magnetic flux (Wb) | Wb | 1 Wb |
| 14.046 | magnetic flux density (T) | T | 1 T |
| 14.047 | magnetic moment (Am²) | Am² | 1 Am² |
| 14.048 | magnetic polarization (T) | T | 1 T |
| 14.049 | magnetization (A/m) | A/m | 1 A/m |
| 14.050 | magnetomotive force (A) | A | 1 A |
| 14.051 | mass (kg) | kg | 1 kg |
| 14.052 | mass flux (kg/s) | kg/s | 1 kg/s |
| 14.053 | momentum (N/s) | N/s | 1 N/s |
| 14.054 | phase angle (rad) | rad | 1 rad |
| 14.055 | phase angle (°) | ° | 1° |
| 14.056 | power (W) | W | 1 W |
| 14.057 | power factor (cos Φ) | cos Φ | 1 cos Φ |
| 14.058 | pressure (Pa) | Pa | 1 Pa |
| 14.059 | reactance (Ω) | Ω | 1 Ω |
| 14.060 | resistance (Ω) | Ω | 1 Ω |
| 14.061 | resistivity (Ωm) | Ωm | 1 Ωm |
| 14.062 | self inductance (H) | H | 1 H |
| 14.063 | solid angle (sr) | sr | 1 sr |
| 14.064 | sound intensity (W/m²) | W/m² | 1 W/m² |
| 14.065 | speed (m/s) | m/s | 1 m/s |
| 14.066 | stress (Pa) | Pa | 1 Pa |
| 14.067 | surface tension (N/m) | N/m | 1 N/m |
| 14.068 | temperature (°C) | °C | 1°C |
| 14.069 | temperature absolute (K) | K | 1 K |
| 14.070 | temperature difference (K) | K | 1 K |
| 14.071 | thermal capacity (J/K) | J/K | 1 J/K |
| 14.072 | thermal conductivity (W/mK) | W/mK | 1 W/mK |
| 14.073 | thermoelectric power (V/K) | V/K | 1 V/K |
| 14.074 | time (s) | s | 1 s |
| 14.075 | torque (Nm) | Nm | 1 Nm |
| 14.076 | volume (m³) | m³ | 1 m³ |
| 14.077 | volume flux (m³/s) | m³/s | 1 m³/s |
| 14.078 | weight (N) | N | 1 N |
| 14.079 | work (J) | J | 1 J |
# WriteValue
This function transmits the KNX telegram, including the newvalue, to the group address defined in the driver property. This function returns True if the function success, else it returns False. A function GetLastError returns the error number that occurred while executing the command. The errors that can happen: [10000](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#10000), [10002](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#10002), [10003](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#10003), [10004](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#10004).
#### Syntax
```visualbasic
Function WriteValue (
newvalue As Double,
Optional highpriority As Boolean := False)
As Boolean
```
#### Parameters
newvalue
Double It is the new value sent to the KNX bus.
highpriority
Boolean Optional, defaults to False. If False, the command is applied with standard priority on the KNX bus. If it is True, the command is applied with a high priority on the KNX bus.
#### Return value
Boolean This function returns True on success or False if an error occurs. A function GetLastError returns the error number.
# WriteTime
This function transmits the KNX telegram, including data converted from parameter newtime to the group address defined in the driver property. Programmer friendly parameter newtime is used in this function. This format is suitable for DPT Dimension 14.074, where the time scale is defined. This function returns True if the function success, else it returns False. A function GetLastError returns the error number that occurred while executing the command. The errors that can happen: [10000](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#10000), [10002](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#10002), [10003](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#10003), [10004](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#10004), [10005](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#10004).
#### Syntax
```visualbasic
Function WriteTime (
newtime As Time,
Optional highpriority As Boolean := False)
As Boolean
```
#### Parameters
newtime
Time It is the new value sent to the KNX bus.
highpriority
Boolean Optional, defaults to False. If False, the command is applied with standard priority on the KNX bus. If it is True, the command is applied with a high priority on the KNX bus.
#### Return value
Boolean This function returns True on success or False if an error occurs. A function GetLastError returns the error number.
# GetValue
This function returns the last value of the group object with the given address received from the KNX bus.
#### Syntax
```visualbasic
Function GetValue() As Double
```
#### Return value
Double It is the last received value of the group object.
# GetTime
This function returns the last value of the group object with the given address received from the KNX bus in Time format. This function is suitable for DPT Dimension 14.074, where the time scale is defined. In other DPT Dimensions it returns (0:0.0).
#### Syntax
```visualbasic
Function GetTime() As Time
```
#### Return value
Time It is the last received value of the group object.
# OnUpdate
This event is raised when receiving the KNX telegram with the appropriate group address. It returns all possible formats of data received from the KNX telegram.
#### Syntax
```visualbasic
Event OnUpdate As Process(
newvalue As Double,
newtime As Time)
```
#### Parameters
newvalue
Double It is the new value received from KNX.
newtime
Time It is the new value received from the KNX bus in time format. This function is suitable for DPT Dimension 14.074, where the time scale is defined. In other DPT Dimensions, it is set to (0:0.0).