Acceleration Rate

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Acceleration and Deceleration Rate are optional features defined in the NMRA DCC Standard for Configuration Variables.

They are defined with CVs 23 and 24. They work together with CVs 3 and 4.

Acceleration Adjustment

CV 23

This CV contains additional acceleration rate data that is added to or subtracted from the value contained in CV 3. It is determined by (CV 23)*0.896/number of speed steps in use.

This CV, along with CV24, are used to fine tune the momentum features found in CVs 3 and 4. These come into play when multiple unit consists are assembled.

The result is a 7 bit number, the eighth bit is the sign.

This feature is used to simulate momentum.


CV 24

It is the same as above, except CV 24 is used for the equation.