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HO Scale DCC CV Programming Assistant

Compute CV values · Decode CVs

INPUTS



Long address uses CV17/CV18 and sets a bit in CV29
Factory default is 3
28/128 is standard; 14 is legacy
Controls the analog-conversion bit in CV29
Simple three-point curve. Advanced 28-step table can come later.
0–255
0–255
0–255
Momentum ramp-up. Higher = slower to start.
Momentum ramp-down. Higher = longer to stop.

RESULTS

CVs to program
—
in the order shown below
Address summary
—
—
CV Setting Value

This tool computes CV values and explains them; it does not program the decoder itself. Generic entries follow the NMRA standard. Profile-specific notes (e.g. ESU LokSound V5) call out where a decoder differs. Always confirm against your decoder’s manual.