Predefined Cv Sets - ZIMO MX638 Series Instruction Manual

Non-Sound Decoder MX600 - MX638 and Sound Decoder MX640 - MX659
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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; 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, the 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
CV's #10, 113, 150 are set for full regulation up to top speed
10 = 128
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
CV's #10, 113, 150 are set for full regulation up to top speed
113 = 255
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)
CV's #10, 113, 150 are set for full regulation up to top speed
150 = 255
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
= 39 for Lemke ETA176/ESA176, 40 for KISS Silberlinge gauge 1
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 Start voltage
3 = 6 Acceleration
4 = 2 Deceleration
5 = 252 Maximum speed
6 = 85 Medium speed
Motor regulation – EMF sampling time, rate; adaptation to motor type
9 = 95
Regulation-Cutoff – intern. speed step (to 252), where CV #113 applies; med. speed here
10 = 128
Motor regulation – PID-value; adaption to motor type
56 = 33
105 =161 free user data
ZIMO configuration bits; the so called "Marklin brake" is activated here.
112 = 64
Regulation-Cutoff – maximum regulation is set here at speed step in CV #10 (center)
113 =255
122 = 31 Exponential brake curve; soft slow-down in the lowest speed range
144 =128 Software update is locked; CV-programming is unlocked
146 = 30 Gear backlash eliminated; adaptation to gearbox used
150 =255 Full motor regulation even at top speed
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