Does your machine have homing limit switches and if so, when you power on the machine does X and Y home (to find 0,0)?
If yes, and if what you describe above is happening…
… then you need to adjust (reduce) the Max Travel setting on your Ruida controller. Lightburn provides access into this setting (making it easy to get to compared to using the controller’s keypad) through Edit : Machine Settings
In machine settings under the Y Axis Settings, you can reduce the travel appropriately. After adjusting the value, you must write the change to the controller. I also recommend that you back up the entire configuration of the controller to a file on your computer prior to making any changes. You can do this using the Save button.
And as @Rick explained:
You do this through Edit : Device Settings
