Lenz Digital plus LH101 Mode D'emploi page 216

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14.13 F29-F68 Mode
According to the RailCommunity standard RCN-212 (or S-9.2.1 of the
NMRA), two different technical procedures are possible for the control
of the functions F29 to F68: The mode "function group" and the mode
"binary states".
The factory setting is the "function group" mode.
You can find out which mode is to be used for the locomotive
decoders you use for this function range from the descriptions of the
locomotive decoders.
To set the desired mode:
Action Display
The starting point is locomotive control ...
... press the 'M' key
Turn the knob until the option "Setup LH101"
is displayed.
Pressing the knob selects this option.
Turn the knob until the option "F29-F68
Mode" is displayed and press the knob.
The currently set mode is displayed.
Turning the knob changes the setting.
Operating manual LH101
Explanation