8
Transfer protocol
KNX B4 Universal Interface
• Version: 13.09.2021 • from application 1.0 • Technical changes and errors excepted.
1
Blinds
open/
close
Input A/B
This object is used to close
or open the blinds (two-
button shutter).
1 bit
DPT1
CR-T-
1
Switch
long
Input A
This object is used to switch
on/off or to toggle on a long
button press.
2 bytes
DPT1
CR-T-
1
Counter
limit
Input A
This object is used to set the
counter limit availability.
4 bytes
DPT1
CR-TU
1
Send
value
long
Input A
This object is used to send a
predefined value on a long
button press.
2 bytes
DPT2,
DPT5,
DPT7,
DPT9
CR-T-
1
Dimming
Input A
This object is used to dim
brighter or darker (one-
button dimming).
4 bytes
DPT3
CR-T-
1
Blinds
open/
close
Input A
This object is used to stop
movement and adjust the
blinds (one-button shutter).
1 bit
DPT1
C-WTU
2
Scene
Input A
This object is used to recall
or learn the configured 8-bit
scene (1-64).
1 byte
DPT18
CR-T-
2
1-bit
Scene
Input A
This object is used to recall
or learn the configured 1-bit
scene (1 or 2).
1 bit
DPT1
CR-T-
3
Counter
Input A
This object is used as
counter (8-bit, 16-bit or 32-
bit) for rising edge, falling
edge or both edges.
1 byte,
2 bytes,
4 bytes
DPT5,
DPT7,
DPT12
CRWTU
4
Interlock
Input A/B
This object is used to lock/
unlock functioning on
receiving the value 1.
1 bit
DPT1
C-WTU
4
Interlock
Input A
This object is used to lock/
unlock functioning on
receiving the value 1.
1 bit
DPT1
C-WTU
5
Switch
Input B
This object is used to switch
on/off, to toggle or to "send
status".
1 bit
DPT1
CR-T-
5
Threshol
d 1
Input B
This object is used to switch
on/off or to toggle on a
short button press.
1 bit
DPT1
CR-T-
5
Duration
2
Input B
This object is used to reset
the counter on receiving a
telegram with "0" or "1".
1 bit
DPT1
CR-T-
No.
Name
Function
Description
Lenght
DPT
Flags