I tried your suggestions:
"Change in MS2 the Motorola Adress to DCC and 28 Steps."
"Otherwise delay the Motorola Loko in the MS2 and programm a new one with DCC Decoder and 28 Steps."
If I try to drive a loco with a DCC address in the MS2, the Commander immediatly malfunctions, with the multifunction button flashing red-green-red-green etc. If I drive a loco with a Motorola address in the MS2 the Commander functions normally, although limited to 14 speed steps.
Why does the Coupler not function properly with a DCC address in the MS2?