[gnea/grbl-Mega Issue#59] GRBL Mega – Axis Support Naming

#1 – fra589 于 2018-04-09

In Gcode, axis are only named with 1 letter. So you can’t use Z2 for naming an axis, as 2 is the deplacement length for the Z axis when you use Z2…
The naming standard for additionals axis is A for rotational with rotation axis paralele to the X axis, B for rotational with rotation axis paralele to the Y and C for rotational with rotation axis paralel to the Z axis. For linears additionals axis, the naming convention is U for additional axis paralele to X, V for additional axis paralele to Y ans W for additional axis paralele to Z.
See http://linuxcnc.org/docs/html/gcode/machining-center.html for more details.
With Grbl, you will need to edit sources yourself to change the axis names.
If you need more than 3 axis, you will need to use another fork. For example, my 5 axis fork in https://github.com/fra589/grbl-Mega-5X

#2 – JorgenCollinson 于 2018-04-09

Thanks for the feedback, greatly appreciated.
I will check out your firmware.

Regards
Jorgen

From: Gauthier Brière
Sent: Tuesday, 10 April 2018 2:59 AM
To: gnea/grbl-Mega
Cc: JorgenCollinson; Author
Subject: Re: [gnea/grbl-Mega] GRBL Mega – Axis Support Naming (#59)

In Gcode, axis are only named with 1 letter. So you can’t use Z2 for naming an axis, as 2 is the deplacement length for the Z axis when you use Z2…
The naming standard for additionals axis is A for rotational with rotation axis paralele to the X axis, B for rotational with rotation axis paralele to the Y and C for rotational with rotation axis paralel to the Z axis. For linears additionals axis, the naming convention is U for additional axis paralele to X, V for additional axis paralele to Y ans W for additional axis paralele to Z.
See http://linuxcnc.org/docs/html/gcode/machining-center.html for more details.
With Grbl, you will need to edit sources yourself to change the axis names.
If you need more than 3 axis, you will need to use another fork. For example, my 5 axis fork in https://github.com/fra589/grbl-Mega-5X
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#3 – cprezzi 于 2019-02-19

Grbl doen’t support dual axes, but you could just connect two stepper drivers to the same step & direction pins.