Supported KNX DPTs in SharKNX - Reference

SharKNX supports KNX Datapoint Types in two contexts:

Decoding - values decoded and displayed when receiving telegrams in the Monitor. Applies to all DPTs in this document.
Sending - DPTs available for selection when composing a command. A subset of the decodable DPTs. Marked with ✅ in the table below.

If a telegram arrives for a group address whose DPT is unknown or not yet supported, the raw hex payload is shown instead of a decoded value.

Overview

DPT	Name	Size	Send
1	1-bit Boolean	1 bit	✅
2	1-bit Controlled	2 bits	✅
3	3-bit Controlled (Step)	4 bits	✅
4	Character	1 byte	✅
5	8-bit Unsigned Value	1 byte	✅
6	8-bit Signed Value	1 byte	✅
7	2-byte Unsigned Value	2 bytes	✅
8	2-byte Signed Value	2 bytes	✅
9	2-byte Float	2 bytes	✅
10	Time of Day	3 bytes	✅
11	Date	3 bytes	✅
12	4-byte Unsigned Value	4 bytes	✅
13	4-byte Signed Value	4 bytes	✅
14	4-byte IEEE 754 Float	4 bytes	✅
15	Entrance Access	4 bytes	-
16	14-Character String	14 bytes	✅
17	Scene Number	1 byte	✅
18	Scene Control	1 byte	✅
19	Date & Time	8 bytes	✅
20	1-byte Enum	1 byte	✅
21	8-bit Status / Flags	1 byte	✅
22	16-bit Status / Flags	2 bytes	✅
23	2-bit Set	1 byte	-
24	Variable String (ISO 8859-1)	variable	-
25	Double Nibble	1 byte	-
26	Scene Info	1 byte	-
27	32-bit Combined Info	4 bytes	-
28	Variable String (UTF-8)	variable	✅
29	8-byte Signed Value	8 bytes	✅
30	Channel Activation (24 ch)	3 bytes	-
206	Time Delay + HVAC Mode	3 bytes	-
217	Version	2 bytes	-
219	Alarm Info	6 bytes	-
222	Temperature Setpoints (×3)	6 bytes	-
225	Scaling Step Time	4 bytes	-
229	Metering Value	6 bytes	-
232	RGB Colour	3 bytes	✅
234	Language Code	2 bytes	-
235	Tariff Active Energy	6 bytes	-
240	Combined Position (blinds)	3 bytes	-
241	Shutter Actuator Status	4 bytes	-
242	CIE xyY Colour	6 bytes	✅
243	xyY Colour Transition	8 bytes	-
249	Brightness & CCT Transition	6 bytes	✅
250	Brightness & CCT Control (relative)	3 bytes	✅
251	RGBW Colour	6 bytes	✅
252	Relative Control RGBW	5 bytes	✅
253	Relative Control xyY	4 bytes	-
254	Relative Control RGB	3 bytes	✅
275	Four 2-byte Floats	8 bytes	-

Subtypes

The following sections list the subtypes selectable when sending commands, grouped by main type. DPTs with a single subtype or no send support are omitted.

DPT 1 - 1-bit Boolean

Subtype	Description
1.001	Switch (Off / On)
1.002	Boolean
1.003	Enable
1.004	Ramp
1.005	Alarm
1.006	Binary Value
1.007	Step
1.008	Up / Down
1.009	Open / Close
1.010	Start / Stop
1.011	State
1.012	Invert
1.013	Dim Send Style
1.014	Input Source
1.015	Reset
1.016	Acknowledge
1.017	Trigger
1.018	Occupancy
1.019	Window / Door
1.021	Logical Function
1.022	Scene A/B
1.023	Shutter / Blinds Mode
1.100	Cooling / Heating

DPT 2 - 1-bit Controlled

Subtype	Description
2.001	Switch Control
2.002	Boolean Control
2.003	Enable Control
2.004	Ramp Control
2.005	Alarm Control
2.006	Binary Value Control
2.007	Step Control
2.008	Direction Control 1
2.009	Direction Control 2
2.010	Start Control
2.011	State Control
2.012	Invert Control

DPT 3 - 3-bit Controlled

Subtype	Description
3.007	Dimming Control
3.008	Blind Control

DPT 4 - Character

Subtype	Description
4.001	Character (ASCII)
4.002	Character (ISO 8859-1)

DPT 5 - 8-bit Unsigned

Subtype	Description	Range	Unit
5.001	Scaling / Percentage	0–100	%
5.003	Angle	0–360	°
5.004	Percentage	0–255	%
5.005	Ratio	0–255	-
5.006	Tariff	0–255	-
5.010	Counter Pulses	0–255	-

DPT 6 - 8-bit Signed

Subtype	Description	Range	Unit
6.001	Percentage	−128–127	%
6.010	Counter Pulses	−128–127	-

DPT 7 - 2-byte Unsigned

Subtype	Description	Unit
7.001	Pulses	-
7.002	Time Period	ms
7.003	Time Period	10 ms
7.004	Time Period	100 ms
7.005	Time Period	s
7.006	Time Period	min
7.007	Time Period	h
7.011	Length	mm
7.012	Current	mA
7.013	Brightness	lux
7.600	Colour Temperature	K

DPT 8 - 2-byte Signed

Subtype	Description	Unit
8.001	Pulses Difference	-
8.002	Time Lag	ms
8.003	Time Lag	10 ms
8.004	Time Lag	100 ms
8.005	Time Lag	s
8.006	Time Lag	min
8.007	Time Lag	h
8.010	Percentage Difference	%
8.011	Rotation Angle	°

DPT 9 - 2-byte Float

Subtype	Description	Unit
9.001	Temperature	°C
9.002	Temperature Difference	K
9.003	Temperature Change	K/h
9.004	Illuminance	lux
9.005	Wind Speed	m/s
9.006	Pressure	Pa
9.007	Humidity	%
9.008	Air Quality (CO₂)	ppm
9.009	Air Flow	m³/h
9.010	Time	s
9.011	Time	ms
9.020	Voltage	mV
9.021	Current	mA
9.022	Power Density	W/m²
9.023	Kelvin per Percent	K/%
9.024	Power	kW
9.025	Volume Flow	l/h
9.026	Rain Amount	l/m²
9.027	Temperature	°F
9.028	Wind Speed	km/h

DPT 13 - 4-byte Signed

Subtype	Description	Unit
13.001	Counter Pulses	-
13.002	Flow Rate	m³/h
13.010	Active Energy	Wh
13.011	Apparent Energy	VAh
13.012	Reactive Energy	VARh
13.013	Active Energy	kWh
13.014	Apparent Energy	kVAh
13.015	Reactive Energy	kVARh
13.100	Time Lag	s

DPT 14 - 4-byte IEEE Float (selected subtypes)

Only a subset of DPT 14's 80 subtypes are available in the send UI. All subtypes are decoded in the monitor.

Subtype	Description	Unit
14.007	Angle	°
14.019	Electric Current	A
14.027	Electric Potential	V
14.033	Frequency	Hz
14.056	Power	W
14.065	Speed	m/s
14.068	Temperature	°C
14.069	Temperature Absolute	K
14.070	Temperature Difference	K

DPT 16 - 14-Character String

Subtype	Description
16.000	ASCII
16.001	ISO 8859-1

DPT 20 - 1-byte Enum

Subtype	Description
20.002	Building Mode
20.003	Occupied Mode
20.004	Priority
20.005	Light Application Mode
20.006	Light Application Area
20.007	Alarm Class Type
20.008	PSU Mode
20.013	Time Delay
20.014	Wind Force (Beaufort)
20.100	Fuel Type
20.101	Burner Type
20.102	HVAC Mode
20.103	DHW Mode
20.104	Load Priority
20.105	HVAC Control Mode
20.106	HVAC Emergency Mode
20.107	Changeover Mode
20.108	Valve Mode
20.109	Damper Mode
20.110	Heater Mode
20.111	Fan Mode
20.112	Master / Slave Mode
20.113	Status Room Setpoint

Note: Display of enum labels for most DPT 20 subtypes falls back to the raw mode number. Named labels (e.g. "Comfort", "Standby") are shown for 20.102 (HVAC Mode) and a few others.

DPT 21 - 8-bit Status Flags

Subtype	Description
21.001	General Status
21.002	Device Control
21.100	Forcing Signal
21.102	Room Heating Controller Status
21.103	Solar DHW Controller Status
21.105	Room Cooling Controller Status
21.106	Ventilation Controller Status

DPT 22 - 16-bit Status Flags

Subtype	Description
22.100	DHW Controller Status
22.101	RHCC Status

DPT 29 - 8-byte Signed (64-bit Energy)

Subtype	Description	Unit
29.010	Active Energy	Wh
29.011	Apparent Energy	VAh
29.012	Reactive Energy	VARh

DPT 232 / 242 / 249 / 250 / 251 / 252 / 254 - Colour & Lighting

DPT	Description	Size
232.600	RGB Colour	3 bytes
242.600	CIE xyY Colour	6 bytes
249.600	Brightness & Colour Temperature Transition	6 bytes
250.600	Brightness & Colour Temperature Control (relative)	3 bytes
251.600	RGBW Colour	6 bytes
252.600	Relative Control RGBW	5 bytes
254.600	Relative Control RGB	3 bytes

Decode-only DPTs

The following DPTs are decoded in the monitor when the ETS project provides the DPT assignment, but are not available for manual command composition in the send UI.

DPT	Description
15.000	Entrance Access (access code)
23.x	2-bit Action Set (on/off, up/down, alarm)
24.x	Variable-length String (ISO 8859-1)
25.x	Double Nibble
26.001	Scene Info
27.001	Bit-combined Info On/Off
30.1010	Channel Activation (24 channels)
206.x	Time Delay + HVAC/DHW/Occupancy/Building Mode
217.001	DPT Version
219.001	Alarm Info
222.x	Room Temperature Setpoints (×3)
225.x	Scaling Step Time
229.001	Metering Value
234.001	Language Code (ISO 639-1)
235.001	Tariff Active Energy
240.800	Combined Position (blinds/shutter)
241.800	Shutter Actuator Status
243.x	xyY Colour Transition
253.x	Relative Control xyY
275.x	Four 2-byte Floats

Supported Datapoint Types (DPTs)