Track section module MX9 Page 11
APPLICATION EXAMPLE –
Manually operated unidirectional signal influenced block (“Stop in front of a red signal”)
This represents the simplest case within the scope of the “module-autonomous applications”: the two
sections of one MX9 main section are assigned to one signal; up to 8 such signal influenced blocks
can be operated independently of each other through a MX9.
The signal influenced blocks are switched between “Stop” and “Go” (including signals, if connected)
using the digit key on the cab that corresponds to the block number, after activating the MX9 module
address. The same can also be accomplished with external switches provided MX9ASE boards are
plugged in (see chapter “6. Connecting external switch inputs”).
Referring to the drawing below, with a signal influenced block set to “Halt” (red signal), a train enter-
ing section A from the left should slow down to speed limit “L” and come to a full stop in section B.
Note: A pusher train (with the engine at the rear of the train) won’t start to slow down until the engine
enters section A, but if the decoder’s “distance controlled stopping” feature is active it will nonethe-
less come to a full stop in front of the signal.
The track sections return to their initial state (which is “F” or the speed limit defined for the opposite
direction, see “Initial speed limits” in the CV table above) when the whole signal influenced block be-
comes unoccupied (both track sections), regardless whether the train left because the signal turned
“green” or by overriding the signal using the “MAN” key on the cab. The signal influenced block is
now ready for the next train.
Applicable CV settings for this example (Signal influenced block at main section 3 of the MX9):
CV # 23 = 20 (assuming that the speed is to be reduced to “L” (low speed);
reducing the speed to “U” (Ultra low speed) requires CV #23 = 10)
CV # 4 = .... optional: if a speed limit should apply in the opposite direction and/or in the anticipated
direction with a “green” signal; see “Initial speed limits” in the CV table above.
CV # 29, Bits 1.0 = 00 if OCC. INDICATORS socket is empty or used for occupancy detection
= 11 if socket is used for external switch inputs (ASE plugged in, drawing below)
Common GROUND,
track power
and
b
from command station
CAN us
Red
MX9
Low speed !
Stop !
Section 3 A B
Speed in opposite direction
is always unrestricted !
Geen
Non stop !
with MX9ALA board
+
external
switch
with MX9ASE board
use when signals are connected
use when switches are connected
APPLICATION EXAMPLE –
M
anu
a
lly operated bidirectional signal influenced block (“Stop in front of a red signal”)
Operation is similar as in the previous example except that trains can enter from either direction and
stop at the end of the block, which is in the second section at the respective signal.
Bidirectional signal influenced blocks can also be controlled with the cab or external switches; “stop”
or “go” in both directions but also “stop” in one direction only and unrestricted passing in the other.
Limits: Because of a limited number of available sockets for plug-in boards either signals or switches
can be used, but not both at the same time!
Applicable CV settings for this example (Signal influenced block at main section 2 of the MX9):
CV # 22 = 210 (assuming that the speed is to be reduced to “U“ = Ultra low speed).
CV # 3 = .... optional: for limited speed if the signal is “green”;
see “Initial speed limits” in the CV table above.
CV # 29, Bits 1.0 = 00 if OCC. INDICATORS socket is empty or used for occupancy detection
= 01 if socket is used for signals in opposite direction (drawing below)
= 11 if socket is used for external switch inputs (ASE plugged in, next drawing)
Common GROUND,
track power
and
CAN bus
from command station
MX9
with 4 x MX9ALA b oards
+
+
Top drawing: Plug-in sockets are used for MX9ALA to connect signals only.
Bottom drawing: Plug-in sockets are used for MX9ASE to connect external switches; Signals can
therefore only be connected to the MX9 for one direction, signals for the opposite direction can be
controlled with relays for example (drawing) or double-pole switches.
Common GROUND,
track power
and
CAN bus
from command station
MX9
with 2 x MX9ASE b oards
+
+
Содержание MX9V
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