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Reversing Locomotive Direction

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  • Member since
    September 2004
  • From: Dearborn Station
  • 24,281 posts
Posted by richhotrain on Tuesday, August 4, 2015 2:40 PM

Here is a handy calculator to set CV29 values.

http://www.2mm.org.uk/articles/cv29%20calculator.htm

Typically, the value would be something like 34 (forward direction, 28 speed steps, and activate long address).  A value of 35 would reverse the direction.

Rich

Alton Junction

  • Member since
    May 2012
  • 48 posts
Posted by TheBAYline on Tuesday, August 4, 2015 2:32 PM

Turns out NCE has a configuration menu to easily switch it so I figured it out thanks!

  • Member since
    May 2012
  • 48 posts
Posted by TheBAYline on Tuesday, August 4, 2015 2:20 PM

faraway

Flip the low order bit of CV29. Make the value even if it is odd or make it odd if it is even.

 

 

I'm not sure I understand. The manual says default value of CV 29 is 12. Does that mean I should make it 11?

  • Member since
    February 2006
  • From: Germany
  • 524 posts
Posted by faraway on Tuesday, August 4, 2015 2:09 PM

Flip the low order bit of CV29. Make the value even if it is odd or make it odd if it is even.

Reinhard

  • Member since
    May 2012
  • 48 posts
Reversing Locomotive Direction
Posted by TheBAYline on Tuesday, August 4, 2015 1:57 PM

Hi all,

I recently installed a Loksound V4.0 into two Proto2000 E7's. The locomotives run in reverse even though my NCE system says they should be going forward. Is there any way to program the decoder to switch the direction? It appears it's controlled by CV29 according to the documentation. I know it is necessary to program CV31 to 16 and CV 32 to 0 before changing anything, but I can't figure out what value to put in for CV29.

Thanks!

-Christian J.

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