开云体育

Re: Difference Between Compare and Reset #decoderpro


 

开云体育

After writing back to the decoder, what’s in cvs 1, 17, 18, 29 and 19??

Phil G

On 3 Apr 2025, at 21:18, Steve Haas via groups.io <Goatfisher2@...> wrote:

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Continuing the conversation, Don responds:

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      Are you saying that CV 19 would somehow elude the Compare?

Not likely – CV19 is just another location in the decoder to be compared to the data stored in the record in the Decoder Pro Decoder index.

This could be tested by changing CV19 in either the decoder itself or in the record in Decoder Pro, then running the compare function on the CV page.


      You read the part where I say the settings had been working... for years in fact, right? No mysterious brake, BEMF, consist, or the like. And Economies don't, to my knowledge, have Drive Hold, Reverser Centered, or such features that could even accidentally be activated.

Yes, I did.

The symptoms are identical to those reported previously by others where the braking functionality _has_ been revealed to be the cause.? While you are adamant this is not the case (no reason to doubt you), the symptoms _do_ seem to match that possibility.

So, if not braking related, what is left?

From your description, a reset decoder works fine until the values stored in Decoder Pro are written to the decoder, at which time the decoder ceases to respond.

I don’t recall the specifics;? Can you share the make and model of both your DCC system and the decoder again??

After you issue the decoder reset command, the loco/decoder responds at short address three, correct?

And after that you write the data stored in Decoder Pro back to the decoder, correct?

Does writing the settings from Decoder Pro back to the decoder itself result in the address being changed from short address 3 to some other address (short or long), and that is the address the decoder is not responding to?

I’m starting to suspect some type of potential disconnect between data loaded into the decoder via the reset, and data the command station has stored in regard to the address that doesn’t work after the decoder data is written to the decoder.

Various DCC systems store different pieces of data about a loco/decoder in their memory.

I’m not a specialist on the internal workings of various command stations, so folks with knowledge of your specific system’s internal workings would have to chime in here.

Hopefully this will give you some additional paths to explore.

Keep us posted.

Best regards,

Steve

Steve Haas

Snoqualmie, WA











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Regards

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