That means decoder pro is looking for the engine on the programming track when it’s on the main . The ‘program on main’ is selected but whited out. Since i cant read the decoder i cant get the decoder pro to select ‘program on main’ using the big boy.
Yes it’s an old tsunami decoder but decoder pro lists many versions of that decoder under the title of steam engines and a bunch of different steam engines.. Do you know what version is in the bigboy and the challenger
Tony
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On Mar 6, 2025, at 10:31?PM, Marc N Fournier via groups.io <forfoum@...> wrote:
?First off, no DCC System will READ on the Main without additional hardware.
Second These Athearn engines used the older Tsunami decoder and they require a Program Track Booster (PTB-100) to READ on the Program track other wise they will fail on the READ.
There is no ACK involved in a WRITE on MAIN, so your last error indicator makes no sense ( no engine on Main ) as the system does a blind write on the main.
Marc
