Lenz Digital plus LH101 Mode D'emploi page 149

Controlling locomotives
In "128 speed steps" mode, speed step "0" and the
"emergency stop" are counted as speed steps. The
maximum speed step which is therefore displayed in this
mode is "126".
Make sure that the locomotive is set to speed
step "0". Otherwise, the speed step mode can
be displayed but not changed.
Press the 'locomotive' key.
Change to locomotive settings.
Turn the rotary knob to display the option
"Fahrstufenmodus/Speed step mode"
Press the rotary knob to display the speed-
step mode currently set.
Turn the rotary knob to display the available
speed step modes.
Press the rotary knob to assign a specific
speed-step mode to the locomotive address.
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