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loc-speed-en

Loco Speed

Speed

The KMH column, the second one, is for displaying the throttle speed in kmh and is available only when Percent mode is selected

  • All KMH and V values must be set greater then zero to activate the display values
  • Percent values in between will be interpolated.
  • This KMH values will be handled with KMH settings in objects, e.g. max kmh values in blocks, routes, cars and trains (11.056+)


Mode

Percent

With the check-box Percent activated velocities are in percent of the maximum decoder step. With a decoder offering 28 decoder steps as an example, 100% equals decoder step 28 whereas 50% equals decoder step 14.

Note: V_Max reduces the maximum velocity of the locomotive in percent-mode if values below 100 (percent) are entered.
Note: It is generally not recommended to reduce a locomotive's maximum speed by only V_Max as the number of available decoder steps would be reduced. Example: A locomotive equipped with a Motorola decoder featuring 14 decoder steps has a maximum velocity of 200 km/h but the maximum velocity of the original engine is 120 km/h. Reducing V_max to 60%, which is decoder step eight, leaves eight speed steps for the 120 km/h range. This will lead to an increase / decrease of 15 km/h (120 km/h : 8) per decoder step. It is thus favourable to adjust the decoder itself to the desired maximum speed if possible leaving V_Max to values around 100%. Decoders without any internal speed setting, however, may be adjusted by decreasing V_Max if necessary.

km/h

Unchecking the check-box Percent activates the km/h mode.

Note: The locomotives maximum velocity is not influenced by V_Max in km/h mode.

V_Max has to be set to the velocity the model engine gains at the highest decoder step. This value is the basis for Rocrail's calculation of all other velocities. Example: If a model engine was adjusted to 80 km/h maximum speed 80 has to be entered into the field V_max. If, for example, 35 km/h is the desired speed for V_Mid 35 has to be entered there.

Note: A linear speed curve is a prerequisite for a working km/h mode, e.g. a V_Mid of 35 indeed yields 35 km/h. If this condition can not be fulfilled it is recommended to use percent mode instead.


Speed values

V_Min - KMH_Min

This should be set to the slowest reasonable locomotive velocity and is set when running in auto mode on the pre2in event (see also Sensors and Blocks).
The value is in km/h or % depending on Mode.

V_Rmin: This should be set to the slowest possible reverse locomotive velocity. V_min will be used if left to zero.


V_Mid - KMH_Mid

This should be set to a medium locomotive velocity and is set when running in auto mode on the enter event.
The value is in km/h or % depending on Mode.

V_Rmid: This should be set to a medium reverse locomotive velocity. V_mid will be used if left to zero.


V_Cru - KMH_Cru

If set greater then zero this is used as the cruise locomotive velocity instead of 80% of V_max
The value is in km/h or % depending on Mode.

V_Rcru: This should be set to the cruise reverse locomotive velocity. V_cru will be used if left to zero.


V_Max - KMH_Max

V_max has two different meanings depending on Mode:

  1. In percent mode the value defines the maximum velocity in percent of the maximum number of decoder steps
  2. In km/h mode the value has to represent the velocity of the loco at highest decoder step (i. e. 28/128, or 14,27 depending on the decoder).
    The value is not used to adjust the maximum velocity. This has to be achieved by adjusting the decoder itself (e. g. CV6 for DCC compatible decoders).


2nd V_Max

The optional second V_max can be used for T4T.


loc-speed-en.txt · Last modified: 2019/05/02 12:25 by rainerk