Carbide Motion 517 uses a new system for setting Travel Dimensions which is potentially confusing:
Pressing the Load Defaults button takes one to a window which allows one to select first machine size:
and then Z-axis type:
after which selection the Travel Dimensions for the selections made are entered into the dialog and will be preserved if one clicks “Ok” (and of course that change discarded if one selects “Cancel”).
In addition there is a “Send Configuration Data” which actually sends settings to Grbl (the Travel Dimensions are for Carbide Motion to use for features such as Rapid Position). Pressing it brings up another window where one may select first machine type:
at which point the configuration will be sent:
Since it is sent to the EEPROM on the machine’s control board, Canceling out of the dialog will not undo any changes.
It is important that the selections made for the two sections be consistent — one wouldn’t want the machine bottoming out if an HDZ is selected for instance.