Alanburford9101 Posted February 27 Share Posted February 27 Hi I trying to change the CV Value in a Hornby Flying Scotsman with TTS sound. I place the loco on the programming track and set the mode to Manual. I could not read the CV Value but I understand the Z21 can only read Fleischman and Roco locos. I entered the CV Value to 1 and pressed Set CV. The Z21 clicked and the blue light turned green. I placed the loco on the main track and no joy. I went to the Basic screen and changed the Loco address to 3 and Hej Presto it works perfectly!! I just wonder if the decoder is “hard coded” to 3 and my attempts to change the CV Value don’t write over it. Your comments please. Alan Link to comment Share on other sites More sharing options...
Rog RJ Posted February 27 Share Posted February 27 I don't have a Z21 but I believe it has a built in address change function that doesn't require you to write to individual CVs. I suggest you try using that. Link to comment Share on other sites More sharing options...
ntpntpntp Posted February 27 Share Posted February 27 (edited) Z21 should be able to read and program any NMRA compliant decoder, not just Fleischmann or Roco. I don't have one but it seems to be a well respected system used by many many people with many many different brands of decoder. I've never heard of a decoder "hard-wired to address 3", not even ancient ones which were limited to 99 addresses. Edited February 27 by ntpntpntp Link to comment Share on other sites More sharing options...
96RAF Posted February 27 Share Posted February 27 Addresses 3 and below used to be reserved so may exhibit odd results at read-back. Try an address a tad higher up the list. Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now