Non-Sound Decoder MX600 - MX634 and Sound Decoder MX640 - MX658 Page 25
Tip: Directions dependent taillights with the help of special effect
CV’s:
With the NMRA function mapping it is only possible to have function F0 directional and was intended
for the headlights, so they automatically switch between “front” and “rear” when changing direction. All
other functions are controlled independent of direction.
The special effect CV’s #125 … 132, #259 and #160 (see chapter “Special function output effects”),
each assigned to a function output (up to FO8), make it possible to have more direction dependent
functions.
To utilize the directional capabilities of these CV’s use only the directional Bits (0 or 1)
without the actual effect Bits.
Example 1: A couple of
red taillights
are connected to function outputs FO1 and FO2 (front and rear
of engine). Both are to be actuated with F1 but should also change with direction. This requires the
following CV settings:
CV #35 = 12 (Bit 2 for FO1 and Bit 3 for FO2), as well as
CV #127 = 1 (for FO1) and CV #128 = 2 (for FO2).
Therefore FO1 is only activated in forward direction and FO2 only in reverse, and only if the function
is turned ON with the function key F1.
Example 2:
Contrary to example 1 where the red taillights were switched independent from the white
headlights, in this example the headlights and taillights are switched ON/OFF together at the proper
end of the locomotive with F0 or F1 (depending on which end the loco is coupled to the train).
This can be done as follows:
Connect:
White front headlights connected to function output “front headlights”
Red front taillights to function output FO2
White rear headlights to function output FO1
R
ed rear taillights to function output “rear headlights” (!).
CV #33 = 1 and CV #34 = 8 front white headlights on F0forw and front red taillights on F0rev!
CV #35 = 6 (both white headlights as well as red taillights in the rear on F1!)
CV #126 = 1 / CV #127 = 2 (Direction dependence for rear white and red lights by means of “Special
Effects” CV).
3.16
“Unilateral Light Suppression”
This new feature (
since SW version 30.7, supplemented with 33.18
), asked for by many users, makes
it possible to switch off all lighting on one side of a locomotive with the push of one function key (usu-
ally on the “train side”, i.e. where cars are coupled to the locomotive).
CV
Designation
Range
Default
Description
#107
Light suppression
(i.e. front headlights
AND additionally de-
fined function output)
at
0 - 255
0
The value of this CV is calculated as follows:
The number of a function output (FO1…FO28)
x
32
+
number of a function key (F1, F2…F28)
=
Value of CV #107
Function Key: The
key (F1…F28) which should turn off
ALL lights on the cab side 1 (front side) AND
cab side 1 (front)
Function Output: i.e. taillights on the same side.
#108
Cab side 2 (rear)
0 - 255
0
Same as CV #107 but for other locomotive side.
#109
Add. Fu-output at cab 1
1…6
0
Function output is turned off together with CV #107.
#110
Add. Fu-output at cab 1
1…6
0
Function output is turned off together with CV #108.
3.17
The “Swiss Mapping”
(from SW version 32, dimming possibilities added with SW version 34)
The “Swiss mapping” is a function mapping that allows the
loco lighting
to be used as is required by
Swiss locomotives, which is of course also useful for locos of other countries.
The purpose of the "Swiss mapping" is to switch the various states of the locomotive lighting with dif-
ferent function keys, i.e. for situat
ions like driving a single locomotive, cars coupled on driver’s cab 1,
or at the driver's cab 2, push-pull, shunting, etc.
Using this relatively complex method is of course only worthwhile if the vehicle is equipped with many
independently connected lights
(or LED’s) and the decoder offers as many function outputs, at least
6. ZIMO decoders offer indeed between 6 and 10 function outputs (with the exception of a few minia-
ture decoders), large-scale decoders even more.
The desired lighting states are defined by
a total of 17
CV groups, each group containing 6 CV’s.
A total of 10 such groups can be used (= 78
CV’s; CV #430 - #507). The principle is simple in itself, in
that the first CV of each group contains the number (1 to 28) for a function key F1 .. F28, and the oth-
er CVs define which function outputs are to be switched on when pressing this key, each dependent
on the direction of travel.
ATTENTION: only sound decoders have 17 CV groups for the swiss mapping.
Non-sound decoders: MX618, MX633 and MX634 have 13 CV groups (CV430-CV507) and the other
decoder types have 8 CV groups (CV430 - CV477).
CV
Designation
Range
Default
Description
#430
Swiss Mapping Group 1
“F-Key”
0 - 28,
29
(for F0),
129 - 157
0
The key defined here shall turn on the function outputs
listed under
A1 (forward or reverse) and
A2 (forward or reverse).
1
– 28 for function keys F1 – F28, F29 is for F0.
Bit 7 = 1: Inverts the F-key function.
#431
Swiss Mapping Group 1
“M-Key”
or
Special high-beam
setting
(from SW version 34)
Bit 0 - 6:
0 - 28,
29
(for F0)
and
Bit 7
or 255
0
The “normal function mapping” for the “M-key” defined
here will be deactivated (that is the relevant outputs,
such as the head
lights for example) when the “F-key”
is switched on.
Bit 7 = 1: additionally, the outputs listed under A1 and
A2 should only switch ON if the F and M key is ON.
Bit 6 = 1: The M-key outputs shall not be turned OFF
if
the F-key is ON and driving forward.
Bit = 5: The M-key outputs shall not be turned OFF if
