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Digitrax message NoAK

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  • Member since
    December 2004
  • From: Louisville
  • 588 posts
Digitrax message NoAK
Posted by dbduck on Thursday, February 15, 2024 6:21 PM

Have a DCS100

when trying to program an adddress on a loco on the programming track I get message NoAK

I have tried numerous locos in all the programming modes

I have checked the wiring and is continuous from the multi pin plug on the DCS to the programming track

Does not change anything getting same error message

should I be able to read voltage between program A&B terminals

 

  • Member since
    March 2011
  • From: Westford MA
  • 533 posts
Posted by Tophias on Friday, February 16, 2024 9:13 AM

Is this a new occurrence? Have you been able to read decoders previously? If so, any new physical activity, like track wiring? Did you check continuity from the terminal connector and then just the wire alone? Maybe need a reset of the DCS100?

Regards, Chris 

  • Member since
    December 2004
  • From: Louisville
  • 588 posts
Posted by dbduck on Friday, February 16, 2024 10:54 AM

This is on a Portable club layout. I have never used this programming track Before So I can't say if it has worked in the past. I was tasked with trying to find out why it doesn't work. Yes there is continuity between the terminal block of the command station and the programiming track

  • Member since
    March 2011
  • From: Westford MA
  • 533 posts
Posted by Tophias on Friday, February 16, 2024 1:38 PM

Does it use a programming booster like a Soundtraxx PTB100?

Regards, Chris 

  • Member since
    February 2020
  • 31 posts
Posted by know2go on Saturday, July 13, 2024 6:13 PM

Hi, 

I had lots of such and other programming issues, extended CVs etc. with Digitrax.

Switched to NCE - all problems cured. Literally. 

Of course such transition will cost extra money, but in the end, it saved a lot of time.

Every time I think about it, I would do it again, because programming works so much better. With NCE it even works with keep alive continuously connected! 

My two cents to this issue

  • Member since
    May 2002
  • From: Massachusetts
  • 2,899 posts
Posted by Paul3 on Wednesday, July 17, 2024 10:38 AM

I hope the OP got this fixed since February, but just in case he hasn't...

Check the toggle switch at the bottom right of the DCS100 and make sure it's in RUN (all the way up).

Check the Loconet connections for continuity.

Try it without any loco on the programming track at all.  It should read "No-d" (as in "no decoder").  If it still says, "No AK" ("no acknowledgement"), then there's a bigger problem.

"No AK" only pops up when it can sense a load on the programming leads, but for some reason it's not reading the decoder.  For example, an engine with a busted motor lead, a dead decoder, or no decoder at all (just a DC engine).  If it's still saying "No AK" when there's nothing on the track, that means something is fishy in the wiring or the DCS100 is broken.

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