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Programme Hornby 2 Hal - Electrics - DCC - Getting You Started. - Your Model Railway Club
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 Posted: Wed Jun 30th, 2021 02:58 pm
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Passed Driver
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Hi All.   First attempt to DCC Hornby 2HAL,  This is nothing that I have seen before. I put my Hornby 2 Hal on the track, plugged in the Powercab pressed the Programme button four times. Next instruction in the display read Short Circuit, maybe I have plugged it in the wrong way round ??? Nope same as. Disconnect and turn to YMRC for help. Best wishes Kevin



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 Posted: Wed Jun 30th, 2021 11:19 pm
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Sol
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Do I assume you have decoder installed ?

If in doubt, use DC to see if it drives.



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Ron
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 Posted: Thu Jul 1st, 2021 01:45 am
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Hi Ron.  Thank you for your reply. I think I have already done that when I purchased it, but, just in case I will give it another go . Best wishes Kevin



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 Posted: Thu Jul 1st, 2021 09:11 am
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Hi Ron.  You wouldn’t believe it ? The short circuit was caused by the bus wires, whilst I am fitting a new handle on the Inglenook Junction Plank. I have separated the planks and the bus wires got caught up. And that was the reason.Now the 2HAL runs okay, but, when it should reverse it runs forward instead, next question how straight forward is that to sort out???  Best wishes Kevin 



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 Posted: Thu Jul 1st, 2021 12:48 pm
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Just turn the decoder round.



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Robert
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 Posted: Thu Jul 1st, 2021 01:35 pm
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Hi Robert.  Thank you for your reply. I was hoping that it would be simple, and is that all, no more Faffing around.Best wishes Kevin



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 Posted: Thu Jul 1st, 2021 03:42 pm
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You can also 'read' the value in cv29 then add +1 to it and write to decoder. This will change the direction of forward travel. I'm assuming everything else is working as expected   :thumbsCheers

Matt



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 Posted: Thu Jul 1st, 2021 04:59 pm
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Hi Matt. Thank you for your reply. I am pleased that “ we have movement “ . On the Chinese travellers front, I was surprised how big they were, definitely not quite like the previous lot.  Best wishes Kevin



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 Posted: Thu Jul 1st, 2021 11:09 pm
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Sol
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Turning the decoder around won't fix direction of travel , only allows the lights to work.
To fix direction, two methods
1. reverse the wiring to the motor itself... needs soldering skills or
2. as Barchester indicated . alter CV29 ( or if using NCE - the English words as described in the Powercab manual - Direction bit )



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Ron
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 Posted: Fri Jul 2nd, 2021 06:32 am
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Hi Ron . Thank you for your reply, that all sounds complicated to me, but, I will give it a go. Best wishes Kevin 



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 Posted: Fri Jul 2nd, 2021 08:32 am
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Passed Driver wrote: Hi Ron . Thank you for your reply, that all sounds complicated to me, but, I will give it a go. Best wishes Kevin 

It's not that complicated with the Power Cab, Kevin. Once set on the programming track (prog/esc + 4, choose 2. CV programming, read CV 29, and if it is an even number (most likely), add 1 to that value and press enter. 

If it is an odd number, subtract 1.

The first alternative is better, that is to remove the body and turn the decoder around 180 degrees and plug it in again. The main complication there is the physical difficulty in removing the body.



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 Posted: Fri Jul 2nd, 2021 10:43 am
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Hi Jeff.   Thank you for your reply. You would not believe it? I cannot locate the POWERCAB guide. Best wishes Kevin 



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 Posted: Mon Jul 5th, 2021 10:41 am
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Hi Jeff. Since my last message, I have opened my eyes and located my Powercab manual. Yipee! Best wishes Kevin



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