Second extruder not moving
We have two (electical) identical printers using Ardiuno Due and modified RAMPS 1.4.
Firmware ist Repetier 0.92.9.
Setup is fine and is working but second extruder does not move, on both machines. All working I mean X/Y/Z is moving correctly, heat bed working, thermistors for all hotends plus bed are OK. Also first extruder is working fine.
I allready switched cables for extruders -> second motor running, first not. I also switch motor drivers -> second motor not working, first working. So I think hardware is OK.
I also did a M502, M500 but nothing changed. I noticed that for second extruder it's not even enabled. I can manually move it by hand.
Any help would be appreciated.