I need a quick check. This is the CV that will program a decoder to make the orignal forward direction into the reverse direction and vice versa, right?
Bear "It's all about having fun."
Yup.
Here's a very neat CV29 calculator:
http://www.2mm.org.uk/articles/cv29%20calculator.htm
Ed
That calculator really is kinda neat...thanks.
I'm pretty sure you know this, but newbies might not.
Some CV's, like this one, control multiple functions. You addup the values you need for each function and enter the total for that CV.
Other CV's control a single function and still others, called index CV's allows you to address other CV's. It all sounds harder than it is, but you have to read the manual.
Henry
COB Potomac & Northern
Shenandoah Valley
Henry, I read the manual and get completely lost on occasion. In this case, all I need to do is reverse the direction of two locomotives and that is it. I will do the momentum thingie eventually, and a coupleof othrs and then leave well enough alone.
I have a folder for each loco I program. I keep notes on what I changed.
You don't have to do everything at once. CV's can be revisited later.
Believe me, Ed, I have no intention of rushing to configure every CV known to man. But CV 29 in terms of direction is now important after doing a little research and talking with someone in my club who is a railroad savant.
CV 19 not CV 29 is where the direction of travel of each locomotive in a consist is set when using Advanced Consist feature. The DCC system automatically sets CV 19 and the other related CVs when an Advanced Consist is set up.
RR Baron
bearman Believe me, Ed, I have no intention of rushing to configure every CV known to man. But CV 29 in terms of direction is now important after doing a little research and talking with someone in my club who is a railroad savant.
Setting CV29 and the loco address are the biggies, for sure.
Agreed
That's one of the things that NCE handles well without the user having to calculate the value of 29.
You would think. I used my NCE cab to program my three new E9's. When I checked CV29 later, all were different!
Wow, Ed. So, uh, creative. Well, I THOUGHT they were all the same, because I thought I had done the job right.
A lesson to learn: Read back your CV29, and compare it to what you get using the wonderful calculator, cited above.
For the loco address, don't bother. If you got it wrong, it will be pretty obvious when you try to make it go. Which you should try immediately after setting it. Not later at the club. Or next month.
BigDaddy Setting CV29 and the loco address are the biggies, for sure. Agreed That's one of the things that NCE handles well without the user having to calculate the value of 29.
That's one of the things that ALL current DCC systems handle for you. No calculator needed.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
rrinker That's one of the things that ALL current DCC systems handle for you. No calculator needed.
I did not know that, nor would I have guessed given all the posts about calculators for CV 29 and struggles with reverse, long loco numbers and speed steps.
RR Baron CV 19 not CV 29 is where the direction of travel of each locomotive in a consist is set when using Advanced Consist feature. The DCC system automatically sets CV 19 and the other related CVs when an Advanced Consist is set up. RR Baron
Walid
For a newbie, bits 0, 1, and 5 are the most important parts of CV29.
Bit 0 controls direction. Bit 1 controls speed steps. Bit 5 controls the cab address.
Most model railroaders operate using the long address, so bit 5 will always be ON (value=32).
Most model railroaders use 28 or 128 speed steps, so bit 1 will always be ON (value=2).
That leaves bit 0 which will be OFF for forward (value=0) or ON for reverse (value=1).
So, when you total those values, CV29 will equal either 34 or 35.
Those are the most common values for CV29.
Rich
Alton Junction
richhotrainFor a newbie, bits 0, 1, and 5 are the most important parts of CV29.
I don't know which bit it is, but I think that the one that determines whether or not the loco will run on DC is pretty important for a newbie.
maxman I don't know which bit it is, but I think that the one that determines whether or not the loco will run on DC is pretty important for a newbie.
Handy chart. Scroll down to page 34.