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Which cv's

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  • Member since
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  • From: Ontario Canada
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Posted by Mark R. on Sunday, February 1, 2015 10:30 AM

.

 

¡ uʍop ǝpısdn sı ǝɹnʇɐuƃıs ʎɯ 'dlǝɥ

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Posted by richhotrain on Sunday, February 1, 2015 9:42 AM

JoeinPA

 

 
richhotrain

Mike, are you there?

Rich

 

 

 

I don't think that he replies to posts. Look at his other posts.

Joe

 

Yeah, I've noticed that.  

Alton Junction

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Posted by MisterBeasley on Sunday, February 1, 2015 8:36 AM

Mark R.

Add 1 to the current value in CV29.

That's true if that bit in CV29 is already zero, as it would be if no one ever changed it.  But, for example, if you bought this engine used and someone had already set the bit, then adding 1 to the value of CV29 would change other unrelated bits, and might make the engine behave badly.

So:

To change the normal direction of travel, examine CV29.  If it's an even number, add 1.  If it's an odd number, subtract 1.

It takes an iron man to play with a toy iron horse. 

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Posted by JoeinPA on Sunday, February 1, 2015 7:55 AM

richhotrain

Mike, are you there?

Rich

 

I don't think that he replies to posts. Look at his other posts.

Joe

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  • From: Northern Minnesota
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Posted by NP2626 on Sunday, February 1, 2015 6:07 AM

jalajoie

If you mean changing the normal direction of travel, it is CV29.

Wouldn't switching forward with reverse be changing the normal direction of travel?

NP 2626 "Northern Pacific, really terrific"

Northern Pacific Railway Historical Association:  http://www.nprha.org/

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Posted by richhotrain on Sunday, February 1, 2015 6:00 AM

Mike, are you there?

Rich

Alton Junction

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  • From: Dearborn Station
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Posted by richhotrain on Monday, January 12, 2015 11:45 PM

CV29 is a multi-function CV.  Here is a great little calculator.

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

Say you want to operate forward with 28/128 speed steps and use a long address.  The value of CV29 would be 34. If, instead, you wanted to operate in reverse, the value of CV29 would be 35.

Rich

Alton Junction

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Posted by Mark R. on Monday, January 12, 2015 9:40 PM

Add 1 to the current value in CV29.

Mark.

¡ uʍop ǝpısdn sı ǝɹnʇɐuƃıs ʎɯ 'dlǝɥ

  • Member since
    December 2001
  • From: Trois-Rivieres Quebec Canada
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Posted by jalajoie on Monday, January 12, 2015 9:27 PM

If you mean changing the normal direction of travel, it is CV29.

 

Jack W.

  • Member since
    March 2002
  • 228 posts
Which cv's
Posted by mike33469 on Monday, January 12, 2015 9:24 PM

Which cv's are used to switch foward and reverse?

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