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Offline DaleSchultz  
#1 Posted : 13 July 2018 20:46:37(UTC)
DaleSchultz

United States   
Joined: 10/02/2006(UTC)
Posts: 3,997
I am helping a friend alter some parameters on his Märklin 36631 loco.

The instructions do not mention any secondary address for functions above F8, yet there are another 7 functions that are accessible with MS II, CS I & II and the CS III

I know that my Baden IV loco also did not state what the secondary address is, but I found out what it is somehow (someone told me I think). With a 6021 or Intellibox it is not possible to read values from the decoder to find out directly.

Is there a CV that is used consistently to define what the secondary address is? 75?

I am therefore wondering if it would be useful to compile such a list here. Something like this:

Catalog: 36631 Secondary address: nn

or

Catalog: 36631 Secondary address: none

or

Catalog: 36631 BR 187.0
Primary: nn Secondary address: nn
Dale
Intellibox + own software, K-Track
My current layout: https://cabin-layout.mixmox.com
Arrival and Departure signs: https://remotesign.mixmox.com
Offline H0  
#2 Posted : 13 July 2018 23:34:20(UTC)
H0


Joined: 16/02/2004(UTC)
Posts: 15,267
Location: DE-NW
Hi!

With most Märklin locos the secondary address is set to 255 ex works. It can be changed with CV 75, so it does not matter that you cannot read it.
For some decoders you can set a third address with CV 17 and a fourth address with CV 18. The default values are usually 254 and 253, but in most cases only 2 addresses are active by default.

See also:
http://blog.mailez.de/eb...unctions-with-mfx-locos/
Regards
Tom
---
"In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS
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thanks 2 users liked this useful post by H0
Offline DaleSchultz  
#3 Posted : 13 July 2018 23:51:11(UTC)
DaleSchultz

United States   
Joined: 10/02/2006(UTC)
Posts: 3,997
Thanks Tom, a great summary.... so as I suspected it may be worth simply writing some values to CV 75 etc. and if it does not work we do a reset...
Dale
Intellibox + own software, K-Track
My current layout: https://cabin-layout.mixmox.com
Arrival and Departure signs: https://remotesign.mixmox.com
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