CV 24
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NMRA CV 24 - Consist Deceleration Adjustment
This CV contains additional deceleration rate information that is to be added to or subtracted from the base value contained in Configuration Variable #4. This CV will only affect the momentum when the decoder is operating in a CV 19 Consist. This CV is a 7 bit value (bits 0-6) with the 8th bit (bit 7) being reserved for signing. (0 = add, 1 = subtract); therefore, the range of values is 0 to +/-127 where a value of 255 = (-)127.
The total momentum value to be added can be calculated using the following formula: ([the contents of CV#24] multiplied by [0.896]) divided by (number of speed steps in use)
The product of this formula is added to the value in CV 4. In case of overflow (CV24 + CV4 > 255), the maximum deceleration rate is used (255). In case of underflow (CV4 + (-)CV24 < 0) no deceleration momentum shall be used (0). The expected use of this configuration is for changing momentum to simulate differing train lengths/loads. Consisted/MU's tend to pull/push more cars, and therefore can have simulated higher loads by using this configuration.
It is important to note that the use of this CV only affects operation when changing speed using only the throttle. Adjustments to this CV will NOT affect the deceleration rate when using Brakes.
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