Page 66 Non-Sound Decoder MX618 - MX634 and Sound Decoder MX640 - MX648
8
Predefined CV sets
The CV sets described below are available from software version 27.0, but
only in non-sound de-
coders,
like the MX620, MX621, MX630, MX631 and MX632. More CV sets will be added with future
software versions.
There are no CV sets available for sound decoders (at least not until July 2010); the corresponding tasks are part of
the sound project CV list.
CV sets are lists of predefined CV settings that are embedded in the decoder software; when desired,
one of these lists can be activated by a "pseudo-programming" of CV #8.
Decoders delivered as
“normal” decoders
don’t have any of the existing lists activated; instead the
CV’s contain the “normal” default values as shown in the CV tables above. However, an existing CV
set can be activated with the “CV #8” procedure (see below).
Decoders delivered as “
OEM” decoders,
i.e. decoders installed by a loco manufacturer, usually have
a fitting CV set activated. If needed, t
he decoder can be set back to the “normal” (default) values with
the “CV #8” procedure (see below).
The existing CV sets that can be activated in non-sound decoders:
CV set, activate with
CV #8 = 10
for
ROCO ICN
non-sound version with factory installed MX630P16. Deliveries began in August 2010.
CV # 2 = 4
Lowest speed step set for jerk free running of the ICN
3 = 6
Acceleration
4 = 2
Deceleration
5 = 252
Top speed setting corresponds to default setting.
6 = 85
Medium speed (speed curve)
9 = 95
Motor regulation: High sample rate to prevent jerky behavior
10 = 128
CV’s #10, 113, 150 are set for full regulation up to top speed
29 = 6
Analog operation activated, RailCom turned OFF
56 = 33
PID-Control (BEMF) optimized for ICN
105 = 161
ROCO ID code
106 = 1
ROCO ID code
113 = 255
CV’s #10, 113, 150 are set for full regulation up to top speed
122 = 31
Exponential braking (non-linear deceleration for smoother stops)
144 = 128
Update lock to prevent accidental disruptions
146 = 30
Gear back-lash compensation at direction change (ensures smooth starts)
150 = 255
CV’s #10, 113, 150 are set for full regulation up to top speed
CV set, activate with
CV #8 = 11
created for
HAG
locomotives with MX631D decoder, as of June 2010.
CV # 3 = 3
Acceleration
4 = 2
Deceleration
9 = 88
Motor regulation: High sample rate and long sample time
13 = 1
FO1 is turned ON in analog mode
56 = 61
Low integral value in PID regulation (BEMF)
58 = 170
Reduced motor regulation
112 = 36
Motor control frequency set to 40 kHz
124 = 128
SUSI deactivated; both connections are used as logic-level function outputs
152 = 64
FA3, FA4 used for directions bit, for the control of ESU wiper reversing switch
CV set, activate with
CV #8 = 12
created for
Hobby-Trade
, Decoder MX631D, as of October 2010.
CV # 3 = 15
Acceleration
4 = 8
Deceleration
6 = 120
Medium speed (Speed curve adjustment)
35 = 12
Function assignment
35 = 48
Function assignment
124 = 2
Acceleration and deceleration momentum to be reduced to ¼ of CV #3 and 4.
127 = 2
Directional taillights
128 = 1
Directional taillights
129 = 170
Direction dependence for other equipment
130 = 36
Direction dependence for other equipment
155 = 4
Half speed (low gear) with F4
156 = 4
Momentum deactivation with F4
CV set, activate with
CV #8 = 13
created for
Hobby-Trade
, Decoder MX631C (“Märklin” style or ESU design), as of October 2010.
CV # 3 = 10
Acceleration
4 = 7
Deceleration
35 = 0
No action with function key F1
36 = 0
No action with function key F2
37 = 0
No action with function key F3
61 = 97
Standard function mapping replaced by the one without left-shift.
124 = 4
Acceleration and deceleration momentum to be reduced to ¼ of CV #3 and 4.
155 = 4
Half speed (low gear) with F4
156 = 4
Momentum deactivation with F4
More CV sets were defined during 2011 to 2013 and added to the software of all non-sound decod-
ers: Activate a CV set with
CV #8 = …
= 14, 15, 16
for Roco articles 801088000, 801088001, 801088002 (Delivered WITHOUT RailCom)
= 17, 18, 19, 22
…28
for various Roco articles (Delivered WITH RailCom)
= 29, 30, 31, 32, 33
for Fleischmann articles
The CV sets for Roco vehicles differ from each other mainly in the areas of "Function Mapping "and lighting effects, the
other CVs are uniformly set as follows:
CV # 2 = 4
3 = 6
4 = 2
5 = 252
6 = 85
9 = 95
10 = 128
56 = 33
105 =161
112 = 64
113 =255
122 = 31
144 =128
146 = 30
150 =255
Start voltage
Acceleration
Deceleration
Maximum speed
Medium speed
Motor regulation
– EMF sampling time, rate; adaptation to motor type
Regulation-Cutoff
– intern. speed step (to 252), where CV #113 applies; med. speed here
Motor regulation
– PID-value; adaption to motor type
free user data
ZIMO configuration bits;
the so called “Marklin brake“ is activated here.
Regulation-Cutoff
– maximum regulation is set here at speed step in CV #10 (center)
Exponential brake curve; soft slow-down in the lowest speed range
Software update is locked; CV-programming is unlocked
Gear backlash eliminated; adaptation to gearbox used
Full motor regulation even at top speed
