When I do motor movements via OctoPrint (eg. to move the extruder upwards) then it happens very often that after starting a job the steps are doubled. That means that the job size on the bed is much bigger than it should be. If the normal size is larger than half the bed then in case of an error the extruder wants to drive beyond the bed in run into the mechanical stop.
When I turn off the printer and on again, the job now works fine.
Hello. Which GCODE do you mean? In Octoprint, the start GCODE (Section GCODE-Scripts in Settings) is empty. In CURA this start GCODE is active:
G28; Fahr zum Nullpunkt
G92 E0; setze den Extruder auf Null
G1 Z2.0 F3000; Druckkopf 2mm nach oben fahren
G1 X10.1 Y20 Z0.28 F5000.0; Fahre an die Startposition X10.1 Y20 Z0.28
G1 X10.1 Y200.0 Z0.28 F1500.0 E15; Ziehe eine Linie von der Startposition aus nach Y200
G1 X10.4 Y200.0 Z0.28 F5000.0; Bissl zur Seite bewegen
G1 X10.4 Y20 Z0.28 F1500.0 E30; eine 2. Linie nach vorne ziehen
G92 E0; setze den Extruder auf Null
G1 Z2.0 F3000; Fahr die Düse 2mm nach oben