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
14
5
Examples
5.1
Settings
for
T+A
K8
series
Multiroom
Receiver
The
settings
of
the
parameter
are
described
according
to
an
example:
Table
3:
Telegram
Example
End
of
the
telegram
via
the
telegram:
Figure
11:
Example
1,
general
settings
At
this
example,
the
length
of
the
telegram
is
transmitted
at
the
second
byte,
so
the
position
of
length
specification
is
assigned
to
2.
To
the
end
of
the
telegram
(without
checksum)
are
3
bytes
remaining
(Offset
of
length
specification
=
3).
So
the
whole
length
of
the
telegram
is
defined.
The
data
end
(timeout)
can
be
adjusted
to
the
minimum
value,
because
the
baud
rate
of
the
RS232
is
115200,
which
makes
crossovers
of
telegrams
impossible.
The
telegram
example
contains
start
values
before
the
command
and
end
values
after
the
command.
These
values
are
adjusted
for
the
Header
and
Footer.
Figure
12:
Example
1
‐
Settings
for
Header
At
first
the
length
of
the
Header
must
be
adjusted.
Now
a
value
for
the
Header
can
be
assigned,
here
0103C4.
Byte
1
Byte
2
Byte
3
Byte
4
Byte
6
Byte
7
Header
Length
of
the
telegram
adress
command
Flag
Byte
checksum
0x01
0x03
0xC4
0x57
0x02
0xE4