Let’s try it without the test.gcode that I’m not sure that works hahaha
If you send a gcode like this one:
G0 A10 B10 C10 D10 X10 Y10 Z10
All the motors move together? Everyone moves?
The following gcode should move the motors to the initial position
G0 A0 B0 C0 D0 X0 Y0 Z0