PLEASE NOTE THAT MARK's ORIGINAL QUESTION / ISSUE IS NOT ABOUT LOCKING HIS DECODER!!!!
-=Tim
On Monday, May 1, 2023 at 01:04:13 PM CDT, Mark Granville <mfgranville@...> wrote:
Read this and look at the Tsunami section. It' slightly different from the standard for locking:
John, nice write-up. Just one comment about the statement:
“Note: Although not specifically stated, legal values for CV16 are limited to 1 to 7. Even then, Digitrax mentions 0 as a legal value. The author cannot test this as he does not use Digitrax decoders.”
As you note, the NMRA standard does not give “legal values” for CV15 & 16. ESU, for example, gives 0-255 as allowed values for these CVs in the decoder manuals. As far as I know, all manufacturers allow 0. It has always been my understanding that the NMRA standard implies that 0 in CV16 means no lock. Most decoders come with 0 as default for both CVs. I’m sure you will find 0 to work just fine in whatever decoders you have.
Now I need to test a few decoders to see if CV16=0 results in no lock independent of CV15 value. It may be that the default for decoders is unlocked because both CV15 and CV16 are 0.
