Programming with Marklin ?Control Unit? 6021: Programming of all parameters is carried out electronically without opening the locomotive (no DIP-switches required).
Proceed as follows:
Make certain, that only the locomotive to be programmed is on the track. Now switch on the Marklin command station or press the ?Stop? and ?Go? buttons at the same time until a reset is triggered. Enter the address (alternately address 80 if you don?t know the correct address), turn the speed control knob as far left as possible (change of direction) and hold it down for about 8 to 12 seconds. Thus the decoder changes to programming mode, which is indicated by the blinking lights. Release the speed knob now. Now enter the number of the configuration register, which you want to change (e.g. 05 for CV#5: maximum speed). Confirm this entry by turning the speed control knob to the far left (change of direction). The lights will flash repeatedly. Now you can enter the appropriate value of the configuration register. Should you want to reduce the maximum speed of the locomotive enter for instance 48. This entry also has to be confirmed by turning the speed control knob to the far left. Now this entry is stored in the memory of the decoder. The lights come on for about three seconds. Then the decoder is ready fort he next entry, which is indicated by the blinking lights.
To exit the programming mode enter number 80 or press the ?Stop? key of the commandstation.