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| Turn DC mode off - CV29 - DCC - Tutorials - Getting You Started. - Your Model Railway Club | ||||||||||
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Ed Full Member 
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Having just altered the normal direction of travel by changing the value of CV29 for the second time (I really must check which way round I'm soldering these wires), I was wondering what everyone does about changing the value to disable running the decoder in DC mode. The default appears to be on, so that a chipped loco could be run on a DC layout. However I have read that turning it off can improve running especially when the track is a bit dirty as it stops the decoder checking for DC and instead makes it look again for the DCC signal. Since I have no intention of running any chipped Loco on DC, I was just wondering what everyone else does as I'm thing of disabling DC as I chip each loco by subtracting 4 from the value. Ed ____________________ Engineers just love to change things |
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RFS Full Member
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Turning off running on DC can prevent cases of runaway when the decoder temporarily loses the DCC signal. A good explanation of why this happens is described here:- http://www.tonystrains.com/tonystips/2011/032211.htm I turn off both DC running and Railcom on all my locos. As all locos use 4-digit addresses, all use 28/128 speed steps and none have the decoder the wrong way round, it means every single loco has CV29=34. Locos with wires reversed would need CV29=35. Of course, if you take your locos to a club and need to run them on DC you'll have to re-enable DC running, which means setting it to 38, or 39 for locos with reversed wires. ____________________ Robert |
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Silver foxx Inactive Member 
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good info there,thanks for posting   ____________________ my webcam link http://86.19.184.67:8080 |
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| This is topic ID = 12689 Current time is 10:56 pm |
| You are here: Your Model Railway Club > Getting You Started. > Electrics - DCC > DCC - Tutorials > Turn DC mode off - CV29 | |||
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