Coordinates could go wrong if manually controlled

If one controls the printer with the controller moving axis the coordinates could go wrong.
In case you step over limits i.e. x-home, coordinates counts minus steps but the axis stay on 0. Same happens if you go over max endstops.

I can see this behaviour on my CoreXY printer.


  • Where do you read the coordinates? On the printer or some host that keeps values inside bounds and assumes firmware does the same?
  • I read the values on the printer display.
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