H0 Sound Decoder MX640 Page 9
CV
Designation
Range
Default
Description
# 58 = 255: maximum Compensation.
If required, an “intensity curve” can be
achieved using CV #10, 58 and 113 to reduce
load regulation at higher speeds.
#59
Signal dependent
reaction time
0 - 255
5
This value divided by 10 is the time in seconds
it takes to start a signal controlled acceleration
after receiving a higher speed limit command
with:
“ZIMO signal controlled speed influence” (re-
quires ZIMO MX9 or MX900 track section
module)
or “asymmetrical DCC signal” method (Lenz
ABC).
#60
Reduced function
output voltage
(Dimming)
0 - 255
0
The actual function output voltage can be re-
duced by PWM. Useful to dim headlights, for
example.
Example values:
# 60 = 0 or 255: full voltage
# 60 = 170: 2/3 of full voltage.
# 60 = 204: 80% of full voltage.
#61
Special ZIMO
function mapping
0 - 7, 67,
98, 99
(See “Function
mapping”)
0
For applications not covered by NMRA function
mapping (CV #33 - #46), for example: “Swiss
lighting”; see “function mapping – ZIMO exten-
sions”.
= 1, 2, 3, 4…. Special function mapping table
for often used lighting variations.
= 67: Alternative function mapping without the
usual „left shift“.
= 98: starts a flexible function mapping for
directional function control, automated
function turn-off after stopping and more.
See “ZIMO special function mapping” at the
end of this chapter!
#65
Subversion
number
Read only
This CV indicates the subversion number of a
version noted in CV #7
(i.e. Version 4.2: CV #7 = 4 and CV #65 = 2).
0 - 99: Normal subversions
100 - 199: Beta-Versions
200 - 255: Special versions (usually custom ver-
sions)
.
#67-
94
Individual speed ta-
ble
0 - 252
(See add.
notes)
**)
User programmable speed table.
Only active if Bit 4 in CV #29 is set to 1.
Each CV corresponds to one internal speed
step that can be “mapped” to an external step
(in-between speed steps will be interpolated
when using 128 speed steps).
CV
Designation
Range
Default
Description
#66
#95
Directional
speed trimming
0-255
0-255
0
0
Multiplication of the current speed by “n/128” (n
is the trim value in this CV)
#66: for forward direction
#95: for reverse direction
#105
#106
User data
0 - 255
0 - 255
0
0
Free memory space to store user supplied
data.
#112
Special ZIMO
configuration bits
Values to turn Bit “on”:
Bit 0: 1
Bit 1: 2
Bit 2: 4
Bit 3: 8
Bit 4: 16
Bit 5: 32
Bit 6: 64
Bit 7: 128
ZIMO MX21, MX31…
cabs also display the
individual bits;
calculating bit values is
no longer necessary!
0 - 255
4 =
00000100
Bit 1 = 0: Motor brake off
= 1: active brake for locos without
worm gear.
Bit 2 = 0: Loco number recognition off
= 1: ZIMO loco number recognition on
(Turning the loco number recognition off pre-
vents a possible ticking sound if this feature is
not used).
Bit 3 = 0: reacts only to the (new) NMRA-
MAN-Bit =
12 function mode
= 1: reacts to old MAN bit =
8 function
mode
Bit 4 = 0: Pulse chain recognition off
= 1: Pulse chain recognition on (use with
LGB systems)
Bit 5 = 0: 20 kHz frequency
= 1: 40 kHz frequency
Bit 6 = 0: normal (also see CV #129
description)
= 1: non-directional DC braking („Märklin-
Brake mode)
Bit 7 = 0: no pulse chain generation
= 1: Generates pulse chain commands for
LGB sound modules on output FO1.
Only in MOTOROLA format:
Bit 3 = 0: normal, 4 functions for each address
= 1: next higher address is used to control
4 more functions, for a total of 8 func-
tions, which is otherwise not possible
within a MOTOROLA system.
#113
EMF reduction
Note: This CV is rarely nec-
essary
0 - 255
(See add.
notes)
0
Intensity of back-EMF is reduced above the
speed step defined in CV #10, to the value en-
tered here. Together, CV #10, #58 and #113
define a BEMF curve.
If set to 0, BEMF is totally cut-off above the
speed step defined in CV #10.
#114 Dimming
mask
Bits
0 - 5
0
Bit 0 to 5 for one function output each
(Bit 0 = front headlight, Bit 1 = rear headlight,
Bit 2 = function output F1, etc.)
Bit value=0: Output dimmed to value defined
in CV #60.
Bit value=1: Output not dimmed.
