Non-Sound Decoder MX600 - MX634 and Sound Decoder MX640 - MX658 Page 29
Low/high beam mask
One of the function keys F6 (CV #119) or F7 (CV #120) can be defined as a low beam key.
Selected function outputs can be dimmed as required with the function turned ON or OFF (inverted
action with Bit 7).
CV
Designation
Range
Default
Description
#119
Low beam mask for F6
-
Output assignment for
(example) low/high
beam
headlights
ATTENTION:
Certain settings in
CV #154 (Special output
configurations for OEM
projects) change the
meaning of CV’s #119
and #120 and therefore
will no longer be a low-
beam mask.
Bits
0 - 7
0
Selected outputs will dim, according to the dim value
in CV #60, when the F6 key is actuated.
Typical application: Low/high beam
Bit 0 - front headlight,
Bit 1 - rear headlight,
Bit 2 - function output FO1,
Bit 3 - function output FO2,
Bit 4 - function output FO3,
Bit 5 - function output FO4.
Respective Bit = 0: Output will not be dimmed,
Respective Bit = 1: Output will be dimmed with F6 to
value defined in CV #60.
Bit 7 = 0: normal action of F6.
= 1: inverted action of F6.
EXAMPLE:
CV #119 = 131: Function key F6 toggles headlights
between low and high beam.
#120
Low beam mask for F7
Bits 0 - 7
Same as CV #119 but with F7 as low beam key.
A “second dim value” with the help of the uncoupler CV
If more function outputs need to be dimmed than CV #60 allows or if some function outputs require a
different voltage and the uncoupler function is not needed on the same vehicle then
CV #115
can be used for an alternative low voltage supply. The respective function outputs must be defined as
“uncoupler output” in the corresponding
CV’s #127…#132, #159 and #160
(see “Special effects for function outputs).
CV
Designation
Range
Default
Description
#115
Uncoupler control
or
Second dim value
0 - 9
0
Only active
if “uncoupler” function is selected (value
48) in
CV #125 …132, 159 or 160:
Tens digit = 0: when used for dimming applications
Ones digit (0 to 9): PWM
– voltage reduction
(0 to 90%)
#127
-
#132
#159
#160
Effects on
FO1, FO2,
FO3, FO4, FO5, FO6
on FO7
on FO8
0
0
Value = 48 for dimming application
#127
FO1 #128
FO2
#129
FO3 #130
FO4
#131
FO5 #132
FO6
#159
FO7 #160
FO8
NOTE: Dimming can also be achieved with the help of CV’s #137, 138 & 139 (see chapter 3.23)
3.20 Flasher Effect
Flashing is actually a lighting e
ffect just like all the others that are summarized in the CV’s starting
with #125; for historical reasons though they are listed with
their own CV’s #117 and #118.
CV
Designation
Range
Default
Description
#117
Flasher functions
Outputs are assigned in
CV #118.
0 - 99
0
Duty cycle for flasher function:
Tens digit = ON time / Ones digit = OFF time
(0 = 100msec, 1 = 200msec…..9 = 1 sec)
Example:
CV #117 = 55: Flashes evenly at 1 a second interval.
#118
Flashing mask
-
Defines which outputs
operate as flashers.
Rhythm is defined in
CV #117
Bits
0 - 7
0
Selected function outputs will flash when turned ON.
Bit 0 - front headlights
Bit 1 - rear headlights
Bit 2 - function output FO1, Bit 3 -
…FO2
Bit 4 -
…FO3, Bit 5 - function output FO4.
Respective Bit = 0: No flasher
Respective Bit = 1: Output flashes when turned ON.
Bit 6 = 1: FO2 flashes inverse!
Bit 7 = 1: FO4 flashes inverse!
(for alternate flashing, i.e. wig-wag)
EXAMPLE:
CV #118 = 12: FO1 and FO2 are defined as flashers.
CV #118 = 168: Alternate flashing of FO2 and FO4, if
both are switched on.
3.21 F1-Pulse Chains (Only for old LGB products)
CV
Designation
Range
Default
Description
#112
Special ZIMO
configuration Bits
0 - 255
4 =
00000100
(Bits 4 and
7 = 0)
Bit 3 = 0:
12-Function mode
= 1:
8-Function mode
Bit 4 = 0: Pulse chain recognition OFF
= 1: Pulse chain recognition ON (use with old
LGB systems)
…
Bit 7 = 0: No pulse chain generation
= 1: Generates pulse chain commands for
LGB sound modules.