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Messy CV 29

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  • Member since
    July 2003
  • From: Sierra Vista, Arizona
  • 13,757 posts
Posted by cacole on Monday, January 12, 2009 7:03 PM

 I made up my own chart of CV 29 values.  Just add up the values that you want to use that have a value of 1 in the first 5 bits.  Bit 7 selects between a mobile and stationary decoder and is not used often enough to be of concern, and bit 6 is not used.

Bit Value:

32 = 0 Short Address Enabled
32 = 1 Long Address Enabled

16 = 0 Use Default Speed Table
16 = 1 User Loaded Speed Table

8 = 0 Advanced Acknowledgment Disabled
8 = 1 Advanced Acknowledgment Enabled

4 = 0 DCC Operation Only
4 = 1 Dual Mode DC/DCC Operation Enabled

2 = 0 14 Speed Step
2 = 1 28/128 Speed Step

1 = 0 Forward Motor Control
1 = 1 Reverse Motor Direction

EXAMPLE:  To set CV 29 for a Long Address and 28/128 Speed Step, add 32 + 2 for a value of 34.

  • Member since
    February 2006
  • From: Gahanna, Ohio
  • 1,987 posts
Posted by jbinkley60 on Friday, January 9, 2009 5:27 PM

jalajoie

There is no menu or submenu that I know of for CV 29.

Here is a link to a look up table.

http://www.tonystrains.com/technews/cv29-lookup.htm

CV29=34 or CV29=35 are the most common values.

 

Engineer Jeff NS Nut
Visit my layout at: http://www.thebinks.com/trains/

  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Friday, January 9, 2009 9:57 AM

 If using one of the checklists that says "Bit 1 does this" etc - it's REALLY easy. I think people try too hard.

 First of all, the bits are labeled right to left. Just like decimal numbers - ones, tens, hundreds, etc.:

Bit:       7    6    5    4    3    2    1    0

Value: 128  64  32  16   8    4    2    1

Mark off the ones you need and add the values. That is the number to program into CV29.

 

                                   --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    December 2001
  • From: Trois-Rivieres Quebec Canada
  • 1,063 posts
Posted by jalajoie on Friday, January 9, 2009 9:30 AM

There is no menu or submenu that I know of for CV 29.

Here is a link to a look up table.

http://www.tonystrains.com/technews/cv29-lookup.htm

 

Jack W.

  • Member since
    November 2006
  • 311 posts
Messy CV 29
Posted by Harley-Davidson on Friday, January 9, 2009 9:10 AM

Can anybody explain how to open the menu and submenu of CV 29?. Thanks 

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