Technical
Manual
Switch
Actuators
AKI/AKS/AKK
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
Tel.: +49-2263-880 • Fax: +49-2263-4588 • [email protected] • www.mdt.de
21
4.4.4
Scene
function
When
functions
of
different
groups
(e.g.
light,
heating
and
shutter)
shall
be
changed
simultaneously
with
only
one
keystroke,
it
is
practical
to
use
the
scene
function.
By
calling
a
scene,
you
can
switch
the
lights
to
a
specific
value,
drive
the
shutter
to
an
absolute
position,
switch
the
heating
to
the
day
mode
and
switch
the
power
supply
of
the
sockets
on.
The
telegrams
of
these
functions
can
have
as
well
different
formats
as
different
values
with
different
meaning
(e.g.
“0”
for
switch
the
lights
off
and
open
the
shutters).
If
there
were
no
scene
function,
you
would
have
to
send
a
single
telegram
for
every
actuator
to
get
the
same
function.
The
scene
function
of
the
switch
actuator
enables
you
to
connect
the
channels
of
the
switch
actuator
to
a
scene
control.
For
that,
you
have
to
assign
the
value
to
the
appropriated
space
(scene
A..H).
It
is
possible
to
program
up
to
8
scenes
per
switching
output.
When
you
activate
the
scene
function
at
the
switching
output,
a
new
sub
menu
for
the
scenes
appears
at
the
left
drop
down
menu.
There
are
settings
to
activate
single
scenes,
set
values
and
scene
numbers
and
switch
the
memory
function
on/off
at
this
sub
menu.
Scenes
are
activated
by
receiving
their
scene
numbers
at
the
communication
object
for
the
scenes.
If
the
memory
function
of
the
scenes
is
activated,
the
current
value
of
the
channel
will
be
saved
at
the
called
scene
number.
The
communication
objects
of
the
scenes
have
always
the
length
of
1
byte.
The
following
illustration
shows
the
setting
options
at
the
ETS
‐
Software
for
activating
the
scene
function:
Illustration
15:
Scene
function
The
following
chart
shows
the
relevant
communication
object:
Number
Name
Length
Usage
4
Scene
1
Byte
Call
of
the
scene
Chart
17:
Communication
object
scene
For
calling
a
certain
scene,
you
have
to
send
the
value
for
the
scene
to
the
communication
object.
The
value
of
the
scene
number
is
always
one
number
less
than
the
adjusted
scene
number.
For
calling
scene
1,
you
have
to
send
a
“0”.
So
the
scene
numbers
have
the
numbers
from
1
to
64,
but
the
values
for
the
scenes
only
from
0
to
63.
If
you
want
to
call
scenes
by
a
binary
input
or
another
KNX
device,
you
have
to
set
the
same
number
at
the
calling
device
as
at
the
receiving
device.
The
calling
device,
e.g.
a
binary
input,
sends
automatically
the
right
value
for
calling
the
scene.
