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Author Topic: Coordinate Spaces - a Guide  (Read 4669 times)

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Offline rcaffin

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Re: Coordinate Spaces - a Guide
« Reply #10 on: October 29, 2016, 04:15:04 PM »
Hi Rich

Comments appreciated, BUT - I don't recognise the first few pages. Are they a more recent version of the MachMill manual? Maybe I have missed out on something? URL?

Cheers
Roger

Offline RICH

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Re: Coordinate Spaces - a Guide
« Reply #11 on: October 29, 2016, 04:56:33 PM »
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Are they a more recent version of the MachMill manual?
 
 NO
Quote
Are they a more recent version of the MachMill manual?
No, the Mill Manual was written years ago and is as it is.

You shouldn't recognize them since they are written by me and your free to include them in your quide.
Like I said, they would be a concise writeup covering basic's which you could build upon.

RICH

Offline rcaffin

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Re: Coordinate Spaces - a Guide
« Reply #12 on: October 29, 2016, 05:32:47 PM »
Hi Rich

OK, and thanks.

The difference is that your version is written from the g-code point of view (which is perfectly valid of course), while mine is written from the 'spaces' pov. Hum ... A rather neat trick mght be to include BOTH. Look at the matter from both sides as it were. That could be good, if you are happy with that? I will acknowledge of course.

Cheers
Roger

Offline rcaffin

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Re: Coordinate Spaces - a Guide
« Reply #13 on: October 29, 2016, 05:59:30 PM »
Hi Rich

You wouldn't happen to have the sources for the pics you used by any chance? I am thinking of including your write-up as a Part 2 in the doc: 'the view from the g-code side' as it were.

I would like to attribute that part to you properly. Do I just use 'Rich', or can I use a real name?

Cheers
Roger

Offline rcaffin

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Re: Coordinate Spaces - a Guide
« Reply #14 on: October 29, 2016, 08:03:50 PM »
Hi Rich

I have been trying to integrate the two versions, but it is difficult. I may or may not succeed. I hope you don't mind if I fail. But a couple of the diagrams might be useful if you want to make them available.

Cheers
Roger

Offline RICH

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Re: Coordinate Spaces - a Guide
« Reply #15 on: October 29, 2016, 11:14:08 PM »
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is written from the g-code point of view

Because g code is "basic" to any controller.

This needs to be added to what I wrote:
All contollers have commands to control a machine and although
they are rather generic each controller has dilects of G code and even some propriatary ones. The following are basic Mach3 G codes / commands related to Work Offsets.

I tried to capture what is shown in hundreds of pages of the major manufacturing manuals and books.

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trying to integrate the two versions, but it is difficult

Just what where does one find coordinate "space" as I don't remember ever seeing that in all the cnc material I studied. Coordinates / planes/ etc. are all mathematical based.Sorry i am just having problems with the "space" terminology......that's why your having trouble integrating maybe.

Keep working at it...it's your write up. ;D

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You wouldn't happen to have the sources for the pics you used by any chance

I drew them myself in cad to pictorialy show what was written.


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including your write-up as a Part 2 in the doc: 'the view from the g-code side' as it were.

Put it where you want ( not there my friend  :D) ..........it's your write up. RICH is fine.

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a couple of the diagrams might be useful if you want to make them available.

Diagrams for what? Can you be more specific?


RICH

Offline rcaffin

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Re: Coordinate Spaces - a Guide
« Reply #16 on: October 29, 2016, 11:30:41 PM »
Hi Rich

Ah - OK, I get you. Yes, I am coming at it from the maths PoV for sure. My background.
With that in mind ... I will revisit.
Diagrams I can do.

Cheers
Roger

Offline rcaffin

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Re: Coordinate Spaces - a Guide
« Reply #17 on: October 30, 2016, 03:10:54 AM »
My thanks to Rich and Robert.
An updated version is attached.
Cheers
Roger

Offline RICH

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Re: Coordinate Spaces - a Guide
« Reply #18 on: October 30, 2016, 10:48:25 AM »
Something you may want to use  /  modify for your next update.

Hopefully captured your intent.

I would strongly suggest you genericaly explain the concept.

Consider:
- Default setup on startup can change any description.
  So define you starting basis of the write up so other stuff
  satisfies some basis, if you don't a reader may constantly
  struggle to relate. OR start from manual to some level of setup    

  automation.

- You have workspace...is there a fixture space?
  Workpace can be inclusive of fixtures, but if multiple fixtures
  are used they could be individual workspaces ie; G54 on startup, the  

  G5x for others, in fact G54 variables can be "0".

  Now G5x is global and G52 is local. G52 is relative to the CURRENT
  G5? workspace offset. It is usualy used as a temporary controlled  
  point offset in programming. SO be carefull in examples.

  G5x WORK offsets replaced the legacy code of G92, but as you see in  

  diagnostics there is only a G92 offset.

- BTW, I think I read were MAch parameters were based one of Fanuc's    
   controller.

Just some thoughts,

RICH

Offline rcaffin

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Re: Coordinate Spaces - a Guide
« Reply #19 on: October 30, 2016, 03:47:16 PM »
Hi Rich

Thanks. Appreciate feedback. Still working on it.

Cheers
Roger