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Help! CVs have changed on their own!

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  • Member since
    January 2001
  • From: United Kingdom
  • 552 posts
Posted by bsteel4065 on Thursday, April 23, 2015 11:11 AM

skagitrailbird

Barry,

Is the decoder by QSI? If so, and if you cannot find the magnetic wand, put it on the program track and change the CV's as follows:

CV 49  =  128
CV 50  =   255
CV 56  =   113
This should reset the decoder to factory values.
Also, I think I misstated the NCE recovery steps incorrectly. It should be:
·         Press  Prog/Esc
·         Then press   4  Enter
·         Then press    7         
·         Then press  1  
Let us all know how you do.

 

 

Hi Roger skagitrailbird

Sorry I have taken SO long to respond but I've been busy.

YES, YES, YES your set up worked. I changed CV49, CV50 and CV 56 and my BLI QSI M1a works like a dream.

Thank you very much! Again sorry for the late response.

Barry

  • Member since
    July 2003
  • From: Sierra Vista, Arizona
  • 13,757 posts
Posted by cacole on Friday, February 6, 2015 4:42 PM

What I was referring to is the NCE Recovery Steps -- they work only with an NCE decoder and will do nothing to QSI or any other brand. 

  • Member since
    December 2008
  • From: Mount Vernon WA
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Posted by skagitrailbird on Friday, February 6, 2015 1:45 PM

Cacole,

I have early QSI decoders that came factory installed in PK2's by LifeLike and in a switcher by Broadway Limited. Both manuals have specify those values as does the Quantum NMRA Reference Manual v 3.0 on page 105 and on page 363 of the most recent v 5.1.1 version.

So I am curious about why you say changing those CV's to the indicated values will have no effect on QSI decoders.

Roger Johnson
  • Member since
    July 2003
  • From: Sierra Vista, Arizona
  • 13,757 posts
Posted by cacole on Friday, February 6, 2015 11:30 AM

The NCE programming values listed will have no effect at all on a QSI decoder, so don't even bother with them.

 

  • Member since
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  • From: United Kingdom
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Posted by bsteel4065 on Friday, February 6, 2015 11:21 AM

Hi Roger

Yes it's QSI. Thanks for this. I'm caught up in other things at the moment but will give this a go when I'm free. Thanks again!

Barry

  • Member since
    December 2008
  • From: Mount Vernon WA
  • 968 posts
Posted by skagitrailbird on Friday, February 6, 2015 11:03 AM

Barry,

Is the decoder by QSI? If so, and if you cannot find the magnetic wand, put it on the program track and change the CV's as follows:

CV 49  =  128
CV 50  =   255
CV 56  =   113
This should reset the decoder to factory values.
Also, I think I misstated the NCE recovery steps incorrectly. It should be:
·         Press  Prog/Esc
·         Then press   4  Enter
·         Then press    7         
·         Then press  1  
Let us all know how you do.

 

Roger Johnson
  • Member since
    January 2001
  • From: United Kingdom
  • 552 posts
Posted by bsteel4065 on Friday, February 6, 2015 2:45 AM

Hi

Just remembered that the BLI loco comes with a magnetic 'wand'. Pass that over the loco and it returns to factory set up. (I believe.) Now have to hunt down the 'wand'!

Thanks as ever for all your help so far guys.

Barry

  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Thursday, February 5, 2015 1:32 PM

 The problem is that the NCE reset doesn't actually reset anything, it sets a set of known CVs to known values. Some of the CVs it changes are standard NMRA defined ones, which apply to mostly all decoders, but some of the things it changes are CVs that aren't so strictly defined and may have slightly different meanings with other brands. Best to use use each manufacturer's reset process, which in many cases revolve around programming CV8 (which is not really writable) to a value which triggers the decoder to do the reset. Some others use CV30 as a reset.

           --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 2008
  • From: Mount Vernon WA
  • 968 posts
Posted by skagitrailbird on Thursday, February 5, 2015 1:01 PM

No. Put the subject locomotive only on your program track, then do the reset. As noted it may not completely reset a non NCE decoder but in my limited experience it has reset everyone I have done, including several non NCE decoders and including a couple of sound decoders (QSI's). If it doesn;t work on your decoder you aren't out anything but a few minutes time.

Roger Johnson
  • Member since
    February 2008
  • 8,878 posts
Posted by maxman on Thursday, February 5, 2015 12:58 PM

bsteel4065

Hi Roger

So I assume this means I will have to re-program everything again. All 4 Switch 8's and assign all my loco's again?

Thanks

Barry

 
You really don't want to use the NCE reset function unless you have a NCE decoder.
 
And no, you don't have to reset everything.  Only the involved loco.
  • Member since
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  • From: United Kingdom
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Posted by bsteel4065 on Thursday, February 5, 2015 12:41 PM

Hi Roger

So I assume this means I will have to re-program everything again. All 4 Switch 8's and assign all my loco's again?

Thanks

Barry

  • Member since
    December 2001
  • From: Trois-Rivieres Quebec Canada
  • 1,063 posts
Posted by jalajoie on Thursday, February 5, 2015 11:30 AM

skagitrailbird

Here is the section from the manual with instructions to re-set the decoder to factory defaults:

RECOVERY PROGRAMMING (Option 7) [press the Prog/Esc key seven times]
This programming section is included to allow the user to set all registers of the Decoder to the values that were programmed into it at the factory.

[This will appear on your screen]
RECOVERY
PROGRAM 1=YES

Press 1 to enter Recovery mode. [The system will then rapidly scroll through all of the CV's.] This will reprogram NCE decoders (and most others) to their original factory values. It will also set addresses, motor control CVs and Function Mapping CVs to a useful state so that you can get control of a decoder.
As each CV is programmed the CV number is displayed.

Good luck!

 

While this will work well with a NCE decoder, I doubt it will be usefull with a sound decoder.

Jack W.

  • Member since
    December 2008
  • From: Mount Vernon WA
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Posted by skagitrailbird on Thursday, February 5, 2015 11:21 AM

Here is the section from the manual with instructions to re-set the decoder to factory defaults:

RECOVERY PROGRAMMING (Option 7) [press the Prog/Esc key seven times]
This programming section is included to allow the user to set all registers of the Decoder to the values that were programmed into it at the factory.

[This will appear on your screen]
RECOVERY
PROGRAM 1=YES

Press 1 to enter Recovery mode. [The system will then rapidly scroll through all of the CV's.] This will reprogram NCE decoders (and most others) to their original factory values. It will also set addresses, motor control CVs and Function Mapping CVs to a useful state so that you can get control of a decoder.
As each CV is programmed the CV number is displayed.

Good luck!

Roger Johnson
  • Member since
    January 2001
  • From: United Kingdom
  • 552 posts
Posted by bsteel4065 on Thursday, February 5, 2015 10:58 AM

Thanks Mike

Interesting about shorts. I have been tracking down (and found) a short out problem this last few days.

Thanks again.

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Posted by mlehman on Thursday, February 5, 2015 10:53 AM

Barry,

Sometimes a short will cause an issue by changing CVs. It's completely random when in happens in my experience.  You just change it back and presuming it doesn't happen again, the issue is solved.

You'll want to look into Function Mapping to correct this, as it assignswhat function corresponds with what key on the controller.

Mike Lehman

Urbana, IL

  • Member since
    January 2001
  • From: United Kingdom
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Help! CVs have changed on their own!
Posted by bsteel4065 on Thursday, February 5, 2015 10:49 AM

Hi

I am in the building stage of my layout and so use my locos to prove track and make sure everything is running OK. I am not into changing CV addresses or anything to do with CV's (yet) so need help please!

My BLI HO PRR M1a 4-8-2 with sound running with NEC Power Pro DCC was working fine but out of nowhere the horn button has become the bell and when I press the bell button, nothing happens. It is only this loco that this has happened to.

I haven't accessed any CV changes that I am aware, the only programming I have done is to allocate switches through Switch 8's to switch through NEC accessory select. 

Help please!!!

Thanks in advance

Barry

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