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Bachmann Spectrum 2-10-2 and GP35 Engine Address

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Bachmann Spectrum 2-10-2 and GP35 Engine Address
Posted by Anonymous on Friday, April 4, 2008 7:53 PM
Just got these 2 new Bachmann locos and can't change the engine address with my Digitrax Zephyr.  I can change the other parameters like accel/decel, but not CV1 in either loco.  I can change CV1 in my Loksound decoder.  What am I missing.  I am trying to do this in OPS mode on the mainline and i've also tried page mode on a programming track...but no luck.  Thanks!! 
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Posted by UpNorth on Friday, April 4, 2008 11:31 PM

What address are you trying to enter, 2 digit or 4 digit ?

2 digit can only be changed/set on the program track.

4 digit can be changed/set on the main (OPS).

You must change CV29 to permit 4 digit addressing. Put 34 as a value in CV29 if you want 4 digit address. Put a value of 2 in CV29 if you want 2 digit addressing.

Do you have DecoderPro at home ?

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Posted by Otis on Saturday, April 5, 2008 1:13 AM

 Sign - Ditto [#ditto],but with the two 'ts

I asked the same thing about a month ago.  No problem after I finally paid attention to the instructions I had been flipping past for almost a year in my decoder manuals.

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Posted by Anonymous on Saturday, April 5, 2008 6:05 AM
Hi UpNorth and Otis...I am using 2-digit addressing, and have tried the changes to CV29.  I can see that the changes to 29 are being accepted (if I change the direction bit, etc) but none of the settings make changing CV1 work.  I have CV29 set to 6 (the default) now, but tried all the settings that I thought might work.  No luck so far.  Any other ideas on what I might be missing?  Thanks again!!
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Posted by UpNorth on Saturday, April 5, 2008 11:29 AM

I'd change CV29 to value of 2 and leave it their. This turns analog conversion off. Known cause of few issues. 

To change the 2 digit address you must be on the programming track, OPS will not work.  Other suggestion if this  does not work, reset to defaults.

http://www.tracksidesales.com/decoder_reset.htm

This will bring it back to 2 digit default address 3.  Best of luck

---

You might want to try putting the Zephyr into "blast mode" for programming by changing  OPSSW #7 to closed (C).  Be aware you must remove the connection to layout and only leave the program track connected. Blast mode sends the commands out on program track AND rail A rail B from what I've read.  Change the OPSSW $7 back to thrown (T) when finished.  This is not documented in the book but came up in Digitrax forum and JMRI forum.  

 

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Posted by Anonymous on Saturday, April 5, 2008 6:31 PM
Thumbs Up [tup]Thumbs Up [tup]Thumbs Up [tup]Thumbs Up [tup]UpNorth....the OPSSW #7 thing worked!!!!  That switch isn't even listed in the Digitrax book.  Thanks a billion for that tip!!!!  Gotta go play now. Smile [:)]Smile [:)]Smile [:)]Smile [:)]
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Posted by Anonymous on Friday, April 11, 2008 8:37 PM
That new 2-10-2 is a really slow moving loco.  Is that typical for these to have such a low "top speed"...or do I have to change a CV?  Everything is at factory defaults now...and it was like this out of the box.  Thanks!!
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Posted by Trynn_Allen2 on Monday, April 14, 2008 9:34 AM
2-10-2's are drag freights.  Depending on the road you model, depends on the top speed.  Between 35 and 45 is considered top end for these locos.  The DM&IR ran thiers around 35 to 40mph topped out with a load behind them, C&IM ran thiers closer to the 45mph, but then again central Illinios is very very flat compared to Upper Minnesota and Northern Wisconsin.  Other roads ran differently.  Since I have a DM&IR 2-10-2  I have put the top end at scale 40mph and adjusted the rest of the steps accordingly.  Though I do plateau the throttle for a couple of steps.

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