Reading out this CV always result in “145” (10010001),
the number issued for ZIMO by the NMRA.
This CV is also used for various resetting processes
with the help of Pseudo-Programming.
“Pseudo programming” means that the entered value is not really
stored, but rather used to start a defined action.
CV #8 = “3” → 21MTC decoder FO3, FO4 logic-level
CV #8 = “4” → 21MTC decoder FO3, FO4 normal
CV #8 = “5” → 21MTC decoder FO5, FO6 logic-level
CV #8 = “6” → 21MTC decoder FO5, FO6 normal
CV #8 = “8” → HARD RESET (NMRA standard);
all CVs return to the last active CV set or
sound project, or (if no such set was active before)
the default values listed in this CV table.
CV #8 = “0” → NOT recommended (service purp. only)
Default values of the CV table
CV holds the firmware vers. no currently in the decoder.
CV #7 = number of the “main” version
CV #65 = Sub-version number
At the same time this CV is used to make digital sys-
tems with limited number space (typ. example: old Lok-
maus) usable for programming the decoder by means
of "pseudo-programming":
Ones digit = 1: Subsequent programming value + 100
= 2: ... + 200
Tens digit = 1: Subsequent CV number + 100
= 2: ... + 200
etc. = 9: ... + 900
Hundreds digit = 0: Revaluation valid for one operation
= 1 ... to power-off
If there are subversions to the SW version in CV #7, it
is read out in CV #65.
The entire SW version number is thus composed of
CVs #7 and #65 (i.e. 28.15).
Reading out these CVs provides the version and sub-
version of the bootloader currently on the decoder
(bootloader = program to load the actual software).
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