
Technical
Manual
Multimedia
Gateway
SCN
‐
MMG01.01
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
Tel.: +49-2263-880 • Fax: +49-2263-4588 • [email protected] • www.mdt.de
15
Figure
13:
Example
1
‐
Setting
for
Footer
At
first
the
length
of
the
Footer
must
be
adjusted,
here
1
Byte.
Now
the
value
from
the
example,
Byte
6,
must
be
signed
in.
The
checksum
is
calculated
via
the
software
by
choosing
the
option
T+A/Metz.
You
have
not
to
sign
in
the
End
mark,
because
the
length
of
the
telegram
is
adjusted
via
the
general
settings.
For
proceeding
a
command
via
1
Bit
object,
a
command
from
the
manual
of
T+A
Amplifier
with
the
address
0xC4
must
be
signed
into
the
parameter
“Bit
Object
0
‐
39:
KNX=>RS232
Value
0/1”.
Here
the
value
0x57
must
be
signed
in
for
this
parameter,
which
switches
the
device
on
or
off.
The
next
example
for
T+A
Amplifier
is
a
telegram
for
adjusting
the
loudness
of
the
Amplifier
via
a
1
Byte
object:
Table
4:
Telegram
Example
‐‐
>
Byte
value
For
executing
this
command,
the
Hex
value
0x00
must
be
signed
in
for
the
parameter
“Byte
Object
80
‐
99:
KNX=>RS232”.
As
option
for
this
parameter
the
character
%1
is
set
behind
the
value
0x00.
So
the
value
00%1
must
be
signed
in
for
this
object.
The
option
in
combination
with
the
telegram
affects
that
the
Byte
value
is
calculated
into
a
percental
value
and
transmitted
as
this
to
the
multimedia
device.
Byte
1
Byte
2
Byte
3
Byte
4
Byte
5
Byte
6
Byte
7
Header
Length
of
the
telegram
address
command
Wert
Flag
Byte
Checksum
0x01
0x04
0xC4
0x00
0x19
0x02
0xE4