Re: [Emc-users] Finally figured out how to halve an axis!

[Peter Rosenblom]

Thanks Danny!
Works like a charm =)

/Peter




2017-02-07 7:43 GMT+01:00 Danny Miller :

> This has troubled me for awhile.  I have the XHC-HB04 pendant. On it is
> a "1/2" button.  It is very useful when your CNC job uses center datum
> and you want to place it in the center of your stock.  e.g. you've got a
> X=10" wide board, you do X=0 at one side, move to the other size and
> X=10, hit "1/2" and you want the current work coords to shift so X=5
> there and now X=0 is the center of the board.
>
> Troubles are, LinuxCNC doesn't provide clear access to absolute value of
> current work coords.  It can't be work offsets, and it needs to apply to
> the currently selected work coord system.  I THOUGHT I had a solution
> but I later discovered it was bugged and useless.
>
> But here's the solution!
>
> #18
> MDI_COMMAND = G10 L20 P0 X[#5420/2]
> #19
> MDI_COMMAND = G10 L20 P0 Y[#5421/2]
>
> G10 L20 = "set to a calculated value that makes the current coordinates
> become the given value"
>
> P0 = "in the active coordinate system"
>
> #5420= "Current relative position in the active coordinate system
> including all offsets and in the current program units for X, Y, Z, A,
> B, C, U, V & W, volatile."
>
> Boom.  That was way too hard to figure out.
>
> Danny
>
>
>
>
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>
--
Check out the vibrant tech community on one of the world's most
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

[Emc-users] Finally figured out how to halve an axis!

[Danny Miller]

This has troubled me for awhile.  I have the XHC-HB04 pendant. On it is 
a "1/2" button.  It is very useful when your CNC job uses center datum 
and you want to place it in the center of your stock.  e.g. you've got a 
X=10" wide board, you do X=0 at one side, move to the other size and 
X=10, hit "1/2" and you want the current work coords to shift so X=5 
there and now X=0 is the center of the board.

Troubles are, LinuxCNC doesn't provide clear access to absolute value of 
current work coords.  It can't be work offsets, and it needs to apply to 
the currently selected work coord system.  I THOUGHT I had a solution 
but I later discovered it was bugged and useless.

But here's the solution!

#18
MDI_COMMAND = G10 L20 P0 X[#5420/2]
#19
MDI_COMMAND = G10 L20 P0 Y[#5421/2]

G10 L20 = "set to a calculated value that makes the current coordinates 
become the given value"

P0 = "in the active coordinate system"

#5420= "Current relative position in the active coordinate system 
including all offsets and in the current program units for X, Y, Z, A, 
B, C, U, V & W, volatile."

Boom.  That was way too hard to figure out.

Danny




--
Check out the vibrant tech community on one of the world's most
engaging tech sites, SlashDot.org! http://sdm.link/slashdot
___
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users