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I have a medium-size layout: 25 x 40 bldg, 5 'super' TIU's, ~ 800' of track, 20 power blocks, each with ~ 10 sets of wires from the 5 terminal blocks to the tracks.

 

          Adding a new engine takes  LONG time....say a minute or so.  My Q:   WHY DOES IT TAKE SO LONG TO FIND A NEW ONE?

 

Barry mentions things like addresses & messages, I know;  but no details.  What's REALLY going on?

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Hi Phil... Use a programming track or equivalent. Only the engine you're trying to add should be receiving power on a track with a good dcs signal..   Everything else on dead tracks  else weird things will  happened.     

 

I To answer your question, I suppose dcs has to check all your  tracks and tius looking  for the engine. If all your tiu are shut down except 1 things probably go faster. We have 4 tiu in super and use a programming track with tiu #1 and the rest of the tiu dead. No problems

Gregg,

 

While we know he has 5 TIUs, we don't if all of them are powered on.

 

Further, even if all of them are powered on, if the engine to add is in the last place that DCS "looks", it can take some time to find it.

 

A minute could be about right, particularly if several engines that are already in the remote have to be interrogated before being discarded as candidates to be added.

My blocks are about 10' long.  I always have [need] all TIU's powered up.  E.g.;  I may be running 3 trains when I decide to add a new engine.  This works fine, but it takes time to find the newbie.  Running or not the 'wait' time is about the same....

 

But, I repeat my Q:Knowing that the signal speed is VERY large [light speed in the metal, roughly],  What EXACTLY is the the physical process  [or processes]  that causes the long delay?

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