I use the Uhlenbrock 2neo to control my Trix HO and Tillig TT layouts without any problem.

However, the Marklin three rail set up running mfx decoder fitted locos does not respond. I am using the dedicated number 3 and 4 outputs at the back of the Neo unit to power the track as per instructions which state the loco details should appear on screen when the loco is placed on the track.

Nothing appears and nothing moves!

Locos register in MS2 perfectly.

Locos are:

Electrotren E2746S Renfe class 276 fitted with ESU Loksound 4 decoder

Piko 97423 SNCF BB 4200 fitted with Piko TrainSound decoder which boasts "FITS mfx" (only available in France)

Marklin 39659 DB BR 064 steam loco with mfx decoder

Can anybody advise, please?

Thanks.