Après avoir reflashé mon FW, voilà ce que me donne une commande M503 : Steps per unit: M92 X80.00 Y80.00 Z2560.00 E98.00 Maximum feedrates (mm/s): M203 X500.00 Y500.00 Z4.00 E25.00 Maximum Acceleration (mm/s2): M201 X9000 Y3000 Z100 E10000 Accelerations: P=printing, R=retract and T=travel M204 P3000.00 R3000.00 T3000.00 Advanced variables: S=Min feedrate (mm/s), T=Min travel feedrate (mm/s), B=minimum segment time (ms), X=maximum XY jerk (mm/s), Z=max