Atlas User Manual: Diesels
with QSI Sound
36/52
13 January 2015
Decoders (Quantum, Quantum Titan, or
Quantum Titan with ET)
4.2.3.4 Special Procedures for Long Address Programming on the Main Line (Bachmann Dynamis
and CVP Products EasyDCC Systems)
The Bachmann Dynamis and CVP Products EasyDCC systems allow you to program on the main line the two CVs
that hold a 4-digit address (CV17 and CV18), but they do not allow you to program a 4-digit address directly.
1. Determine the values of CV17 and CV18 that correspond to your locomotive’s 3- or 4-digit ID
number either by using one of the CV17/CV18 calculators available on the internet such as
http://ruppweb.dyndns.org/xray/comp/decoder.htm
or else by following the instructions for calculating the values of CV17 and CV18 in the
NMRA
DCC Reference Manual for QSI Quantum 3, 2, and 1 Equipped Locomotives
[3]
.
2. Make sure that verbal announcements (of CV values) are turned on (CV62 = 1).
3. Using Operations Mode Programming, program CV17 to the value that you determined in Step 1.
Listen to the value of CV17 that is spoken out by your locomotive. If it is correct, go to Step 4; if it
is incorrect, repeat Step 3.
4. Using Operations Mode Programming, program CV18 to the value that you determined in Step 1.
Listen to the value of CV18 that is spoken out by your locomotive. If it is correct, go to Step 5; if it
is incorrect, repeat Step 4.
5. Using Operations Mode Programming, program CV29 to the value 38. Listen to the value of
CV18 that is spoken out by your locomotive. If it is correct, go to Step 6; if it is incorrect, repeat
Step 5.
6. Verify that the address of your locomotive has been changed successfully by running it on the
main line with the new address.
4.2.4 Selecting a Value for CV29
CV29 is probably the second (after the DCC address CVs) most often programmed CV. Moreover, CV29 is also the
most important of all the Configuration Variables in DCC. Each bit in CV29 controls one basic operational setting for a
DCC decoder, such as
Extended (4-digit) Addressing
, user-defined
Speed Table Enable/Disable
,
Power Source
Conversion
(operate on either DC or DCC or only on DCC),
Locomotive Direction
, and others. The default value of
CV29 is 6.
Table 7 provides some of the more common values for CV29 and the features that these values support.
Table 7 - Available Features for Various Values of CV29
If You Want this Set of Features
Write this
Decimal
Value
into
CV29
2- or 4-
Digit
Addressing
Activate
Alternate
Speed Table
(CV67–CV94)?
Locomotive
Operates
on DC?
Locomotive
Uses 28 or 128
Speed Steps
Normal
Direction
of Locomotive
2
No
No
Yes
Forward
2
2
No
Yes
Yes
Forward
6
49
2
Yes
No
Yes
Forward
18
2
Yes
Yes
Yes
Forward
22
4
No
No
Yes
Forward
34
4
No
Yes
Yes
Forward
38
49
4
Yes
No
Yes
Forward
50
4
Yes
Yes
Yes
Forward
54
2
No
No
Yes
Reversed
3
2
No
Yes
Yes
Reversed
7
2
Yes
No
Yes
Reversed
19
2
Yes
Yes
Yes
Reversed
23
4
No
No
Yes
Reversed
35
4
No
Yes
Yes
Reversed
39
4
Yes
No
Yes
Reversed
51
4
Yes
Yes
Yes
Reversed
55
49
Two values for CV29 that allow both DCC and DC operation are CV29 = 6 (2-digit addresses) and CV29 = 38 (4-digit addresses).
