MDT KNX Smart 55 BE-JTA5504.01 User manual

MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Tel.: [phone] • Fax: [phone] • [e-mail] • www.mdt.de
Stand 11/2021 Version 1.0
Technical Manual
MDT Blind Push Button Smart 55
BE–JTA5504.01
Further Documents:
Datasheets:
https://www.mdt.de/EN_Downloads_Datasheets.html
Assembly and Operation Instructions:
https://www.mdt.de/EN_Downloads_Instructions.html
Solution Proposals for MDT products:
https://www.mdt.de/EN_Downloads_Solutions.html

Technical Manual
Blind Push Button Smart 55 BE-JTA5504.01
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1
Phone: [phone] • Fax: [phone] • [e-mail] • www.mdt.de
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1 Content
1 Content................................................................................................................................................ 2
2 Overview ........................................................................................................................................... 4
2.1 Overview Devices ......................................................................................................................... 4
2.2 Special features.............................................................................................................................. 5
2.3 Exemplary circuit diagram............................................................................................................ 7
2.4 Structure & Handling .................................................................................................................... 7
2.5 Commissioning.............................................................................................................................. 8
3 Communication objects ..................................................................................................................... 9
3.1 Standard settings of the communication objects ........................................................................... 9
4 Reference-ETS-Parameter............................................................................................................... 13
4.1 General Settings .......................................................................................................................... 13
4.2 Time and astro settings................................................................................................................ 15
4.2.1 Time settings ........................................................................................................................ 16
4.2.2 Astro settings........................................................................................................................ 17
4.3 Display settings ........................................................................................................................... 18
4.3.1 Display: Representation and Brightness............................................................................... 19
4.3.2 User defined colours............................................................................................................. 21
4.3.3 Execute action on keypress if display is 0% (Off) ............................................................... 22
4.3.4 Display Shading/Lock of time switch .................................................................................. 22
4.3.5 Alarms/Lock of Shutter Actuator......................................................................................... 25
4.3.6 Display in the „Settings“ menu (in the device) .................................................................... 26
4.4 Button functions.......................................................................................................................... 27
4.4.1 Identical parameter............................................................................................................... 27
4.4.1.1 Identical parameter –Lock objects................................................................................ 27
4.4.1.2 Identical parameter –Buttons-/Objects description ...................................................... 28
4.4.2 Function –Buttons 1/2 ......................................................................................................... 28
4.4.2.1 Representation on the display........................................................................................ 31
4.4.3 Function –Button 3 / Button 4............................................................................................. 33
4.4.3.1 Identical Settings –Representation on the display........................................................ 34
4.4.3.2 Shading On/Off (global objects) ................................................................................... 35
4.4.3.3 Time switch On/Off (internal connection) .................................................................... 35
4.4.3.4 Change to Settings menu (internal connection)............................................................. 36

Technical Manual
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4.4.3.5 External function –Basic function: Switch................................................................... 37
4.4.3.6 External function –Basic function: Switch short/long.................................................. 38
4.4.3.7 External function –Basic function: One-button dimming ............................................ 40
4.4.3.8 External function –Basic function: One-button blinds................................................. 41
4.4.3.9 External function –Basic function: Send state.............................................................. 42
4.4.3.10 External function –Basic function: Send value .......................................................... 43
4.5 Time switch................................................................................................................................. 44
4.5.1 Settings................................................................................................................................. 44
4.5.2 Automatic calculation of public holidays............................................................................. 48
4.5.3 Times/Locks......................................................................................................................... 49
4.5.3.1 Switching times............................................................................................................. 49
4.5.3.2 Lock object-type............................................................................................................ 50
4.6 Logic............................................................................................................................................ 53
4.7 "Settings" menu (in the device)................................................................................................... 56
4.7.1 Start screen of the “Settings” menu...................................................................................... 56
4.7.2 “Settings” menu „Time switch“: .......................................................................................... 57
4.7.3 “Settings” menu „Lock time switch“: .................................................................................. 58
4.7.4 “Settings” menu „Date / Time“ ............................................................................................ 58
4.7.5 “Settings” menu „Shading“ .................................................................................................. 59
4.7.6 “Settings” menu „Time switch reset“................................................................................... 59
5 Index.................................................................................................................................................. 60
5.1 Register of illustrations ............................................................................................................... 60
5.2 List of tables................................................................................................................................ 61
6 Attachment........................................................................................................................................ 62
6.1 Statutory requirements ................................................................................................................ 62
6.2 Disposal routine........................................................................................................................... 62
6.3 Assemblage ................................................................................................................................. 62
6.4 History......................................................................................................................................... 62

Technical Manual
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2 Overview
2.1 Overview Devices
The description refers to the following units (order number printed in bold):
BE–JTA5504.01 with colour display, white glossy finish
Version with 4 push-button surfaces and integrated time switch

Technical Manual
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2.2 Special features
Active colour display
The devices have an active colour display. The brightness of the display can be continuously adjusted
via various objects. The presentation of the background colour can be set to white or black for Day or
Night operation, depending on the customer's requirements.
Direct operating functions via buttons on the unit
Four buttons are available on each unit. The two upper buttons are permanently set to blind and
shutter control. The two lower buttons can be freely configured as individual buttons. Internal
functions, such as locking the time switch, as well as external functions such as switching, dimming,
blinds, sending values or status can be selected here.
Innovative group control
For button pair 1/2, it is possible with the function "Group control extra-long" to send telegrams via
separate communication objects using an extra-long button press. This can be used for a group
function, for example. With the long button press you move a single blind, with the extra-long button
press you move all blinds in a room.
Integrated daily/weekly time switch with Astro switching function and automatic public holiday
calculation
The time switch is a daily/weekly time switch and has an Astro switching function as well as an
automatic public holiday calculation. Basically, the time switch can be used as a master and supplies
all other participants with date and time. If a timer is already present in the KNX system, for example
the IP interface with time server function (SCN-IP000.03), the time switch can operate in slave mode
with the system time provided.
Up to 8 switching times are possible with the time switch. These can be executed daily or within the
week on different days. In addition to selecting the day and time when a function is to be executed,
additional mode settings and corresponding conditions can also be defined. For the mode, in
addition to the normal standard parameter time, sunrise, sunset, dawn, dusk and random are
available. In combination with the conditions time shift (+/- up to 2 hours), latest at, earliest at or
with random +/- 10 min up to one hour, a multitude of useful functions can be generated.
Astro switch function for convenient blind control
The sunrise and sunset times are calculated by means of the Astro function. The location is required,
either as location information or by location coordinates, and the date by the time switch. Fine
adjustments of the switching threshold of the sunrise and sunset times are possible via the
parameter "individual settings" - "sunrise/sunset".
The automatic summertime/wintertime changeover can be set separately. This can be done via the
general changeover within Europe, or there is the option of an individual setting.

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Settings menu
Via the settings menu, it is possible to make various settings directly on the push-button without the
ETS software. For example, the time and date can be set manually or existing switching times can be
changed.
Logic functions
With a total of 4 logic functions, nested function calls can also be realised. The logic function can
process both internal and external status information.
Long Frame Support
Device supports the sending of longer telegrams and thus the storage of more user data per telegram.
This significantly shortens the programming time (from ETS5).
Requirements: Use of a programming interface which supports the transmission of long frames, e.g.
MDT SCN-USBR.02 or SCN-IP000.03 / SCN-IP100.03.
Updateable via DCA
With the help of the MDT Update Tool, the units can be updated if necessary. The download is
available free of charge at www.mdt.de and www.knx.org.

Technical Manual
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2.3 Exemplary circuit diagram
Figure 1: Exemplary circuit diagram
2.4 Structure & Handling
The following picture shows the structure of the Blind Push Button Smart 55:
Figure 2: Structure & Handling
1, 2, 3, 4 = Operating buttons
5 = Colour display
6 = Programming button
7 = KNX bus connection terminal

Technical Manual
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2.5 Commissioning
After wiring, the allocation of the physical address and the parameterization of every channel follow:
(1) Connect the interface with the bus, e.g. MDT USB interface.
(2) Switch on the bus voltage.
(3) Press the programming button at the device (Indication in the display flashes red alternately).
(4) Loading the physical address from the ETS software via the interface (red flashing goes out as
soon as this has been successfully completed).
(5) Loading of the application, with requested configuration.
(6) If the device is enabled you can test the requested functions (also possible by using the ETS-
Software).

Technical Manual
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3 Communication objects
3.1 Standard settings of the communication objects
The following table shows the default settings for the communication objects:
Standard Settings–Buttons
No.
Name
Object Function
Length
C
R
W
T
U
1
Blinds/Shutter (Buttons 1/2):
Blinds Up/Down
1 Bit
X
X
1
Blinds/Shutter (Buttons 1/2):
Shutter Up/Down
1 Bit
X
X
1
Blinds/Shutter (Buttons 1/2):
Curtain Open/Close
1 Bit
X
X
1
Blinds/Shutter (Buttons 1/2):
Awning In/Out
1 Bit
X
X
2
Blinds/Shutter (Buttons 1/2):
Stop/Slats Open/Close
1 Bit
X
X
2
Blinds/Shutter (Buttons 1/2):
Stop
1 Bit
X
X
2
Blinds/Shutter (Buttons 1/2):
Stop/Step
1 Bit
X
X
3
Blinds/Shutter (Buttons 1/2):
Status current position
1 Byte
X
X
4
Blinds/Shutter (Buttons 1/2):
Status current position of slats
1 Byte
X
X
5
Blinds/Shutter
(Buttons 1/2 Group extra long):
Blinds Up/Down
1 Bit
X
X
5
Blinds/Shutter
(Buttons 1/2 Group extra long):
Shutter Up/Down
1 Bit
X
X
5
Blinds/Shutter
(Buttons 1/2 Group extra long):
Curtain Open/Close
1 Bit
X
X
5
Blinds/Shutter
(Buttons 1/2 Group extra long):
Awning In/Out
1 Bit
X
X
6
Blinds/Shutter
(Buttons 1/2 Group extra long):
Stop/Slats Open/Close
1 Bit
X
X
6
Blinds/Shutter
(Buttons 1/2 Group extra long):
Stop
1 Bit
X
X
6
Blinds/Shutter
(Buttons 1/2 Group extra long):
Stop/Step
1 Bit
X
X
7
Blinds/Shutter (Buttons 1/2):
Lock buttons
1 Bit
X
X
8
Blinds/Shutter:
Lock Shading
1 Bit
X
X
8
Blinds/Shutter:
Enable Shading
1 Bit
X
X
9
Blinds/Shutter:
Status “Lock Shading”
1 Bit
X
X
9
Blinds/Shutter:
Status “Enable Shading”
1 Bit
X
X
10
Blinds/Shutter:
Status Shading
1 Bit
X
X
11
Blinds/Shutter:
Wind alarm
1 Bit
X
X
12
Blinds/Shutter:
Frost alarm
1 Bit
X
X
13
Blinds/Shutter:
Rain alarm
1 Bit
X
X
14
Blinds/Shutter:
Lock status actuator
1 Bit
X
X
X
X
15
Button 3:
Switch
1 Bit
X
X
15
Button 3:
Toggle
1 Bit
X
X

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15
Button 3:
Dimming On/Off
1 Bit
X
X
15
Button 3:
Blinds Up/Down
1 Bit
X
X
15
Button 3:
Send state
1 Bit
X
X
15
Button 3:
Send value
1 Byte
X
X
15
Button 3:
Send percent value
1 Byte
X
X
15
Button 3:
Send scene
1 Byte
X
X
15
Button 3:
Absolute position
1 Byte
X
X
15
Button 3 short:
Switch
1 Bit
X
X
15
Button 3 short:
Toggle
1 Bit
X
X
15
Button 3 short:
Send value
1 Byte
X
X
15
Button 3 short:
Send percent value
1 Byte
X
X
15
Button 3 short:
Send scene
1 Byte
X
X
15
Button 3 short:
Absolute position
1 Byte
X
X
16
Button 3:
Dim relative
4 Bit
X
X
16
Button 3:
Slat adjustment/Stop
1 Bit
X
X
16
Button 3:
Absolute position of slats
1 Byte
X
X
16
Button 3:
Status for toggle
1 Bit
X
X
X
X
16
Button 3 short:
Absolute position of slats
1 Byte
X
X
16
Button 3 short:
Status for display
1 Bit
X
X
X
X
16
Button 3 short:
Status for display
1 Byte
X
X
X
X
16
Button 3 short:
Status for toggle
1 Bit
X
X
X
X
17
Button 3:
Status for toggle
1 Bit
X
X
X
X
17
Button 3:
Status for change of direction
1 Bit
X
X
X
X
17
Button 3 long:
Switch
1 Bit
X
X
17
Button 3 long:
Toggle
1 Bit
X
X
17
Button 3 long:
Send value
1 Byte
X
X
17
Button 3 long:
Send percent value
1 Byte
X
X
17
Button 3 long:
Send scene
1 Byte
X
X
17
Button 3 long:
Absolute position
1 Byte
X
X
18
Button 3:
Status for display
1 Bit
X
X
X
X
18
Button 3:
Status for display
1 Byte
X
X
X
X
18
Button 3 long:
Status for display
1 Bit
X
X
X
X
18
Button 3 long:
Status for display
1 Byte
X
X
X
X
18
Button 3 long:
Status for toggle
1 Bit
X
X
X
X
18
Button 3 long:
Position slats
1 Byte
X
X
19
Button 3:
Lock
1 Bit
X
X
+5
Button 4
Table 1: Communication objects –Standard settings: Buttons

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Standard Settings –Time Switch
No.
Name
Object Function
Length
C
R
W
T
U
25
Time switch
Blinds Up/Down
1 Bit
X
X
26
Time switch
Absolute position of blinds
1 Byte
X
X
27
Time switch
Absolute position of slats
1 Byte
X
X
28
Time switch
Lock
1 Bit
X
X
28
Time switch
Enable Time switch
1 Bit
X
X
28
Time switch
Object value lock
1 Byte
2 Byte
4 Byte
X
X
29
Time switch
Status Lock
1 Bit
X
X
X
30
Time switch
Activation of public holiday (for
external logic)
1 Bit
X
X
31
Time switch
Status public holiday
1 Bit
X
X
X
32
Time switch
VisuControlEasy Interface
14 Byte
X
X
X
X
Table 2: Communication objects –Standard settings: Time switch
Standard Settings –General Objects
No.
Name
Object Function
Length
C
R
W
T
U
33
Operating
Output
1 Bit
X
X
X
34
Push button operation
Output
1 Bit
X
X
X
35
Presence
Input
1 Bit
X
X
X
X
36
Day/Night
Day = 1 / Night = 0
Night = 1 / Day = 0
1 Bit
X
X
X
X
37
Display
Brightness
1 Byte
2 Byte
X
X
38
Time
Receive current value
3 Byte
X
X
X
X
38
Time
Send current value
3 Byte
X
X
X
38
Time
Receive (send) current value
3 Byte
X
X
X
X
X
39
Date
Receive current value
3 Byte
X
X
X
X
39
Date
Send current value
3 Byte
X
X
X
39
Date
Receive (send) current value
3 Byte
X
X
X
X
X
40
Time/Date
Receive current value
8 Byte
X
X
X
X
40
Time/Date
Send current value
8 Byte
X
X
X
40
Time/Date
Receive (send) current value
8 Byte
X
X
X
X
X
Table 3: Communication objects –Standard settings: General Objects

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Standard Settings –Logic
No.
Name
Object Function
Length
C
R
W
T
U
41
Logic A
Input logic 1
1 Bit
X
X
X
X
42
Logic A
Input logic 2
1 Bit
X
X
X
X
43
Logic A
Input logic 3
1 Bit
X
X
X
X
44
Logic A
Input logic 4
1 Bit
X
X
X
X
45
Logic A
Output Switch
Ausgang Scene
Ausgang Value
Ausgang Percent value
1 Bit
1 Byte
1 Byte
1 Byte
X
X
X
+ 5
next Logic
Table 4: Communication objects –Standard settings: Logic
The table above shows the preset default settings. The priority of the individual communications
objects and the flags can be adjusted by the user as required. The flags assign the communication
objects their respective tasks in programming, where C stands for communication, R for read, W for
write, T for transmit and U for update.

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4 Reference-ETS-Parameter
4.1 General Settings
The following picture shows the menu for the general settings:
Figure 3: General Settings
The following table shows the possible settings:
ETS-Text
Dynamic range
[Default value]
Comment
Startup time
2 –240 s
[2 s]
Sets the time between restart and
functional start-up of the device
Send „Operation“ cyclically
not active
1 min –24 h
Setting whether and at what
interval a cyclical "In operation"
telegram should be sent.
Value for Day/Night
Day = 1 / Night = 0
Day = 0 / Night = 1
Sets the polarity for Day / Night
switchover
Behavior after bus power return
Time/Date
no request
request
Setting whether the values/objects
should be requested automatically
on bus voltage return.
Day/Night object
no request
request
Status/Values for toggle
no request
request
Polarity Shading
lock at value 1
enable at value 1
Setting whether the Shading
should be enabled or disabled with
a "1".
Language Display
German
English
Setting the language for texts in
the display
Table 5: General Settings

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Startup time
This time defines when the unit "restarts" after a restart (reset, reprogramming, bus voltage
recovery). This can be important when - Example 1 - a bus reset is carried out. If there are many units
on a line, all units would start at the same time and load the bus. With a variable time, the units can
start differently.
Example 2: If the Time/Date, Status/Values for toggle or Day/Night object are requested, it makes
sense that the devices responsible for them start up first, and the Blind Push Button only a little later.
This ensures that all values are available and correct.
Important: + 10s delay on the device start-up time for the time switch (lock, switching times etc.).
„Operation“
The "operation" telegram is used to show on the bus that the unit is "alive". If activated, an ON
telegram is sent cyclically.
Value for Day/Night
The polarity for Day/Night is set here. Regardless of this polarity, the unit always starts in Day mode
after reprogramming.
Polarity Shading
The polarity is defined here, whether the Shading is to be locked or enabled with a "1". This affects
the symbol in the display. At the same time, make sure that the same polarity is selected on the
shutter actuator.
Language Display
The language affects, among other things, the display of texts in the settings menu and in the table
for setting the switching times.
The table shows the available communication objects:
Number
Name/Object Function
Length
Usage
8
Blinds/Shutter –
Lock Shading
1 Bit
Sending a "1" to lock the Shading and a "0" to
unlock it.
8
Blinds/Shutter –
Enable Shading
1 Bit
Sending a "1" to enable the Shading and a "0"
to disable it.
9
Blinds/Shutter –
Status “Lock Shading”
1 Bit
Receiving the status from the shutter actuator
9
Blinds/Shutter –
Status “Enable Shading”
1 Bit
Receiving the status from the shutter actuator
33
Operation –Output
1 Bit
Sending a cyclic "In operation" telegram
34
Push button operation –Output
1 Bit
Sends out a "1" when a button is actively
pressed.
A timeout of 30 sec. is started after each
keystroke - no telegram is sent during this
time!
36
Day/Night
1 Bit
Receiving the status for Day/Night
38
Time
3 Byte
Receiving the time
39
Date
3 Byte
Receiving the date
40
Time / Date
8 Byte
Receiving time and date via a common object
Table 6: Communication objects –General settings

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4.2 Time and astro settings
The following figure shows the menu for the time and astro settings:
Figure 4: Time and astro settings

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4.2.1 Time settings
The following table shows the possible settings:
ETS-Text
Dynamic range
[Default value]
Comment
System time mode
Master
Slave
Slave (Master on failure)
Setting according to which operating
mode the time switch works.
Send system time
cyclically every
not active
1 min –24 h
[1 h]
Only for operating mode "Master".
Defines the transmission intervals of
the time.
Send system time
cyclically on failure
every
not active
1 min –24 h
[1 h]
Only for operating mode "Slave
(Master on failure)". Defines the
transmission intervals of the time.
Automatic changeover of
summertime
not active
active (Europe)
active (individual)
Defines whether the clock should
automatically change between
summer and winter time.
Shift
1 h
2 h
Only shown for "active (individual)".
Setting the difference between
summer and winter time.
Table 7: Settings –Time
When operating as a "Master", the system time is actively sent from the unit to the bus.
When selected as a "Slave", the unit receives the system time from another unit on the bus, for
example via an MDT IP Interface/Router.
With the setting "Slave (Master on failure)", the unit is set as a slave. If the system time is not
received from the external timer within a certain time, the unit becomes the "Master" and sends the
current time cyclically to the bus.
Note! A time must be defined for the function. The time for cyclical transmission of the "Slave"
should be set the same as the time for cyclical transmission of the "Master".
The "Automatic changeover of summertime" can be done in two ways. With the setting "active
(Europe)" the changeover takes place automatically at the set times in spring and autumn. With the
setting "active (individual)", the times can be set by the user. When activated, the following table
appears and is then configured accordingly:
Figure 5: Setting –Changeover summertime individual
Furthermore, it can be set whether the time shift should be 1 hour or 2 hours.
The table shows the objects relevant for date and time:
Number
Name/Object Function
Length
Usage
38
Time
3 Byte
Sending/receiving the time
39
Date
3 Byte
Sending/receiving the date
40
Time / Date
8 Byte
Sending/receiving time and date
Table 8: Communication objects –Time/Date

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4.2.2 Astro settings
The following settings are possible for the astro function:
ETS-Text
Dynamic range
[Default value]
Comment
Location determination by
coordinates
place
Defines how the location of the
device should be determined.
Setting via place:
Country
any country
[Germany]
Setting of the country.
Town
any town
[Engelskirchen]
Setting of the town.
Setting via coordinates:
Latitude
north
south
Determining whether northern or
southern latitude is to be counted.
Latitude in degrees
[0° - 90°]
0° … 90°
[50°]
Determination of the latitude.
Latitude in minutes
[0´ - 59´]
0´ … 59´
[56´]
Determination of the minutes.
Longitude
east
west
Determining whether east or west
longitude is counted.
Longitude in degrees
[0° - 180°]
0° … 180°
[6°]
Determination of the longitude.
Longitude in minutes
[0´ - 59´]
0´ … 59´
[57´]
Determination of the minutes.
Time difference from
Universal time (UTC+…)
any time zone
[UTC +01:00 Amsterdam, Berlin]
Setting the time zone for calculating
the time and sun position.
Sunrise / Sunset
standard
individual settings
Setting how to set the times for
sunrise/sunset.
Sunrise elevation angle
12° 00´ (12°)
11° 30´ (11,5°)
11° 00´ (11°)
…..
-11° 00´ (-11°)
-11° 30´ (-11,5°)
-12° 00´ (-12°, nautical
twilight)
Only shown when "individual
setting" is selected.
Setting the corresponding elevation
angle.
Sunset elevation angle
Dawn elevation angle
Dusk elevation angle
Table 9: Settings –Astro
Sunrise / Sunset (individual settings)
In certain cases it is necessary to adjust the sunrise/sunset, for example in a very mountainous region
where the sun disappears earlier behind the mountain or rises later. For this purpose, the
sunrise/sunset and the dawn/dusk can be specifically adjusted with corresponding parameters.

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4.3 Display settings
The following picture shows the available settings:
Figure 6: Settings –Display presentation/brightness

Technical Manual
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4.3.1 Display: Representation and Brightness
The following table shows the possible settings:
ETS-Text
Dynamic range
[Default value]
Comment
Representation
Background colour
Day = black; Night = black
Day = white; Night = black
Day = black; Night = white
Day = white; Night = white
Sets the background colour of the
display
Colour mode
black / white
coloured
Setting the representation in the
display
Behavior on presence
Display is switched on
Action for a "1" telegram on the
presence object.
Fixed setting, cannot be changed
Brightness
Control of display
brightness via object
not active, Day/Night
active via percent value (%)
active via brightness values (Lux)
Setting whether and how the
display brightness is to be
controlled
Brightness for Day
0 –100%
[100 %]
Setting a fixed brightness for
Day/Night. Only with "Control of
display brightness via object" ->
"not active".
Brightness for Night
0 –100%
[10 %]
Control of display brightness via object => „active via brightness values (Lux)“
Ambient brightness
for 100%
200 Lux (bright) –2000 Lux (dark)
[1000 Lux (medium)]
Sets the brightness value at which
the display reaches full brightness
Minimum Brightness
Day
0 –100%
[20%]
Setting a minimum brightness
level in daytime operation
Minimum Brightness
Night
0 –100%
[5%]
Setting a minimum brightness
level in night operation
Switch off display
not active
only Night
Day / Night
Setting whether and when the
display is switched off.
Selection available with setting
"Dim display after time" => "not
active".
not active
only Day
Selection available with setting
"Dim display after time" => "only
Night".
Ambient brightness
for restarting
1 –200 Lux
[100 Lux]
Defines the brightness at which
the display switches on again.
Available when "Disable display"
is active.
Ambient brightness
for switch off
1 –200 Lux
[50 Lux]
Defines the brightness at which
the display switches off
completely.
Available when "Disable display"
is active.

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Control of display brightness via object => „active via percent values (%)“
Brightness at start
0 –100%
[100%]
Setting the brightness value when
starting the unit
The following parameters are available for each setting under "Control of display brightness via
objects":
Dim display after time
not active
only Night
Day / Night
Setting whether and when the
brightness on the display should
be dimmed down
Brightness
0 –100%
[0%]
Setting of the value to be
dimmed to after the expiry time.
Available if "Dim display after
time" is active.
Expiration time
0 … 240 s
[20 s]
Setting of the time when
dimming should take place after
the last operation on the unit.
Available if "Dim display after
time" is active.
Table 10: Settings –Display: Representation and Brightness
Background colour
This setting affects the basic representation on the display. If "white" is selected, the background is
light and the writing is dark. If "black" is selected, the background is black and the writing is light.
Colour mode
The colour mode determines whether the fonts and symbols are displayed in colour or only in black
and white..
Behaviour on presence
Here the display can be switched on and off via "Object 35 - Presence". The display is switched on
with a "1" telegram and switched off with a "0" telegram. This setting is fixed and cannot be changed.
A possible application would be control via a motion detector which switches the display on when
presence is detected in the room and switches it off again after the follow-up time has elapsed.
Control of display brightness via object
On the one hand, the brightness can be defined via fixed values (percentage values). These are then
not changeable. On the other hand, the brightness can be set "dynamically" via brightness values (lux
values). These possibilities are as follows:
Control via percent values (%)
A percentage value is sent to the button via "Object 37 - Display brightness". The display
brightness is set accordingly. The parameter "Brightness at start" defines the brightness value that
the unit assumes after a restart. This remains valid until the first time another value is received via
object 37.
Control via brightness values (Lux)
The parameter "Ambient brightness for 100%" defines the basic range at which lux value the
display has its full brightness.
"Minimum brightness Day/Night" defines the brightness at which the display shows a received
brightness value of 0 lux.
If the parameter "Switch off display" is active, "Ambient brightness for switch off" can be used to
set whether the display switches off completely when the brightness falls below a certain level. Via
"Ambient brightness for restarting" you can set whether the display switches on again when the
brightness exceeds a certain level.