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StEin
Stationary Equipment Module
6.
Track sections, point detectors, point following com-
mands
One StEin module has (inter alia) 8 outputs for track sections and 16 logic level inputs.
Those inputs are used for point detectors
*)
, whereby less track sections are needed
otherwise. This results in a technically beneficial and at the same time cost-efficient way
of layout control:
*)
Point detectors are usually simple contact rails, i.e. switching rails, or (reflex-) pho-
toelectric sensors.
Track sections for a mere “LZB” (continuous automatic train control) control:
Division of the track sections for two station-tracks and setting HLU-steps, if a route
from the entry-signal (left) into the upper station track with stop before the exit sig-
nal, is activated. So the train reduces speed bit by bit, from the middle speed step (L)
in a lower one (U) until Stop (H).
“LZB” in combination with “PZB” (intermittent automatic train control):
Less track sections by subdividing them by photoelectric sensors, more cost efficient
and more precise stopping points.
The interlocking program ensures that also pushing trains (loco on the rear side) brake
and stop correctly, by automatically setting the track sections ahead to the corre-
sponding HLU step when detecting the tip of the train.
.
Point detectors (rail contacts, photoelectric sensors, etc.) are assigned to one track sec-
tion each, by entering the connection point of the point detector into the object line of
the parameter APUGK1 (or APUGK2).
The purpose of the point detectors is to switch the track section from one HLU step to
another as soon as a train is detected; for example from L to H, displayed: L/H.
Point detectors are used in two situations;
- In “operation type 3” (i.e. operation by computer): On the driveway via HLU point fol-
lowing commands for the track section like L/H, U/H, LU/L, etc. Those are only valid
once: when leaving the corresponding driveway.
- In “operation type 0” or “1” by parameters PUFFIX, where equally L/H, U/H, etc. are
entered. Those are permanently valid for this section.
IMPORTANT:
-
The point detector works independently of the occupation state of the track section.
-
It is only valid once; i.e. when the change is done once, the point detector is deac-
tivated, especially if the HLU step (by other commands or keys) is changed.
-
A point detector is
o
in “operation type 3” reactivated exclusively by a newly received point following
command with new content; for example: after L/H would follow the point fol-
lowing command U/L (probably not practical), or if after L/H follows F and after
this again L/H (more probable).
o
In “operation type 0” or “1”, if the track section changed its occupation state af-
ter executing the point following command (e.g. L/H).
…
U
H
LU
LU
L
L
LU/U/H
LU
L
P
P
P
P
P
