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function
The key controls ...
... the signal connected to the anterior
function keys of the decoder using the
signal switching fl ow
Once confi gured the key controls signal
aspects as follows:
once short
twice short
Example
Connect the signal from the example above
and an input key to the function outputs
A0 ... A3 of the decoder and confi gure CVs
as given in the table:
signal
A0
A
A1
A0
A1
A2
A2
A3
input key
...
use for other signals
Now you can switch signal aspects pressing
the key (but you can no longer switch
between non stop signal aspects without
going to stop between them):
key commands
short
short
long
short
90
mode
without with
LED
226
227
address
mode
CV550=158
CV1=1
signal1
-
CV552
CV553
-
CV555
CV556
-
CV559=226
CV558
3·short
short
2·short
short
3.6.2. S
ignalling SyStem
A new signal book was
introduced
resulting in a separation
of
speed
free
signalling.
base signal of the 1955
signalling
three bulbs of green,
yellow and red colors
that are mounted in a
single background.
Only one of the three main bulbs is active
at any time.
In the beginning a second yellow light was
used resulting in a signal that could show
two yellow lights.
The yellow light signals a speed restriction
to 30 km/h (later 40 km/h). A light matrix
can be included into the background to give
additional speed information by showing a
digit. The indicated speed is 10 times the
digit value (in km/h).
The following fi gure shows the mostly used
backgrounds of the 1955 signalling system.
Besides the main signals announcing signals
were introduced that do not have the red
light and a different background.
P
main
„P" signal
signal
The P-signal on the left is an automatic
block signal that allows passing a signal
three
showing "stop" after telephonic consent.
lights
a
signal
SpeCtS
The following tables gives an overview on
the signalling aspects of the 1955 system.
dwarf
The numbers are the signal numbers out of
signal
the "Seinenboek 2005" of the NS.
types
NS signals
1955
in
1955
and
track
The
system
has
announcing
signals
single
light
signal
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