Page 14 H0 Sound Decoder MX640
CV
Designation
Range
Default
Description
How much time is required to overcome the back-
lash depends on various circumstances and can
only be determined by trial and error.
Typical values are:
= 100: the motor turns about 1 revolution or a
maximum of 1 second at the minimum speed.
= 50: about ½ a turn or max. ½ second.
= 200: about 2 turns or max. 2 seconds.
Important:
CV #2 (minimum speed) has to be set correctly,
that is the engine has to move at the lowest speed
step (1 of 128 or 1 of 28). Also, CV #146 is only
useful if the load regulation is set to maximum or at
least close to it (i.e. CV #58 = 200 – 255).
#161
Protocol for all
servo outputs
0 - 3
0
Bit 0 = 0: Servo protocol with positive pulses.
= 1: Servo protocol with negative pulses.
Bit 1 = 0: Control wire active during movement
= 1: … always active (consumes power,
vibrates at times but holds position
even under mechanical load).
For
SmartServo RC-1,
CV # 161 = 2 is a must!
Bit 2 = 0: Moves to center position if defined
for two-key operation (see CV
#181/182) when both function keys
are OFF.
= 1: Servo runs only if function keys are
pressed when in two-key operating
mode (see CV #181/182).
#162
Servo 1
Left stop
0 - 255
49
= 1 ms
pulse
Defines the servo’s left stop position.
#163
Servo 1
Right stop
0 - 255
205
Defines the servo’s right stop position.
#164
Servo 1
Center position
0 - 255
127
Defines a center position, if three positions are
used.
#165
Servo 1
Rotating speed
0 - 255
30
= 3 sec
Rotating speed; Time between defined end
stops in tenths of a second (total range of 25
sec).
Default = 3 sec.
#166
to
#169
As above
for servo 2
CV
Designation
Range
Default
Description
#181
#182
Servo 1
Servo 2
Function assign-
ment
0 - 114
90 - 93
from SW-
Version
18
0
0
0
0
= 0: Servo not in operation
= 1: Single-key operation with F1
= 2: Single-key operation with F2
etc.
= 90: Servo action depends on loco direction:
forward = turns left; reverse = turns right
= 91: Servo action depends on loco stop and di-
rection: turns right when stopped and direction is
forward, otherwise turns left.
= 92: Servo action depends on loco stop and di-
rection: turns right when stopped and direction is
reverse, otherwise turns left.
= 93: Servo action depends on loco movement:
turns right when loco stopped, left when loco
moving; direction makes no difference.
Note: “left/right” is determined by the stop point
settings with CV #162 and #163!
= 101: Two-key operation F1 + F2
= 102: Two-key operation F2 + F3
etc. (left/right in each case)
= 111: Two-key operation F11 + F12
= 112: Two-key operation F3 + F6
= 113: Two-key operation F4 + F7
= 114: Two-key operation F5 + F8
(Two-key mode operates as defined with CV
#161, Bit 2)