DCC++ only responding to functions

Mani Mar 16, 2020

  1. Mani

    Mani TrainBoard Member

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    I searched extensively but could not find the answer. Mine is simple setup: Arduino UNO-clone, Genuine shield (or sometimes I use Deek-Robot shield).

    Problem:
    When I acquire the locomotive using JMRI throttle to run, it is not responding to speed control (Hence loco is not moving). But all the functions buttons working. (If I use Run Macro which is a function loco is moving)

    Some times I interchange the shield or write the sketch again to UNO to fix the problem but that will not last for a long time. After I ran loco for 5-15 or so minutes and if use I any function button, again loco not listening. It just ignores JMRI throttle's STOP command and continue running.

    Programming mode working fine.

    Traffic monitor shows the commands I used and keeps them repeating several times.

    Can anyone provide me solution for this problem?
    Is having Original shield solve the problem?

    Thanks





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  2. Mani

    Mani TrainBoard Member

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    Seems decoder problem. I reset my BLi Paragon3 locomotive. That fixed the problem (for now). I still couldn't figure out why these problems persist with BLi locos..

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  3. IronMan1963

    IronMan1963 TrainBoard Member

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    Had this happen. Sounds like you hit the shut down function. f8 I think loco won't move until you restart. f8 again. Had a BLI E8 do this.
     
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  4. Mani

    Mani TrainBoard Member

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    @IronMan1963 Thanks for letting me know. If the loco is running (currently) then same thing happened. It keeps running without listening speed/movement related commands. But functions are working. My question is if I hit f8(shutdown) will it supposed to run or stop?

    (DC conversation ON)

    Let me know if I am not clear.

    Thanks again.

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  5. IronMan1963

    IronMan1963 TrainBoard Member

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    That is what mine was doing. Engine would throttle up lights worked bell and horn worked just no movement. Before I figured out what was going on I did a decoder reset. Then while playing with it I wound up doing it again. Thats when I got the manual out for the loco. I believe that the f8 is startup and shut down sequence. I no long have the loco but you should be able to check your manual. Or check for a manual on BLI's web site. Can anyone else confirm my response?
     
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  6. Mani

    Mani TrainBoard Member

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    Todays update on CV problems:

    CV 117 is not storing the value 0 (zero) while trying to program Bli P3 Loco but stores
    values > 0. Trying to write the zero sometimes resetting the DCC address to 127.




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  7. Mani

    Mani TrainBoard Member

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    I disappointed by BLi customer service reply below:
    ____________

    Please bear in mind that we do not guarantee compatibility with Decoder
    Pro or JMRI. That is an "Open Source" software, meaning anyone in the
    world can write/alter code for it, and there is no centralized company
    to deal with.

    Big problem is that even when/if a customer can get legitimate and
    consistent read-backs with JMRI and our models, they are using templates
    for generic things like "Paragon 3 Steam Engine" or "Paragon 3 Rolling
    Thunder".

    That is impossible because we change our default CV's settings from
    model-to-model. There is no cookie cutter "one size fits all" template
    for our models - especially Paragon3.

    Because there are templates created by anyone and everyone that can be
    very generic and because our default CV's can vary from project to
    project those are often very inaccurate templates.

    Also, if voltages and programming protocols are not right then it will
    give inaccurate writes and/or read backs of CV settings.

    ______________

    Anyone has comments?

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    Last edited: Apr 1, 2020
  8. Anton Grasyuk

    Anton Grasyuk TrainBoard Member

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    from standpoint of BLI this is a very understandable reply.
    they have no control over decoder templates/schemas published with decoderpro . chances are they had several revisions of their decoders too, so i'd say the best way it to follow whatever CV guide they published for that particular decoder/loco

    not sure if BLI has similar but my old Atlas gold QSI-sound equipped engine has a very interesting shutdown mode. During this mode a different sample of prime-mover idle would sound and the engine would not respond to throttle. tried it out before actually reading manual about existence of such feature and spent a fun evening of ripping own hair while trying to understand why my new engine won't run.

    for what is worth, while testing my code for a arduino Nano base-station i had a strange issue with BLI blueline loco. These are the ones with peculiar sound only decoders without motor driver on board. the implementation calls for a second DCC decoder programmed with the same address to drive the motor. as i established connection from JMRI to the board and selected loco address the sound decoder started to rev up through throttle notches while motor stood still. it ended up being issue with connectivity.

    post probably does not answer your question, but perhaps a few more pointers to consider.
    good luck!
     
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  9. Mani

    Mani TrainBoard Member

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    Thanks for comment. Somehow I did not convinced about whole temple thingy reason given by BLI. Is nt it as simple as writing/reading a particular CV value? I just want use single CV programmer.

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