APT NC PART PROGRAMMING

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08 Jan 2020 19:31 #154338 by bryantthomason@aol.com
DOSE LINEX HAVE APT NC PROGRAMMING SOFTWARE??

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08 Jan 2020 19:37 #154339 by bryantthomason@aol.com
IS APT NC PROGRAMING SUPPORT BY LINEXCNC??

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09 Jan 2020 01:43 #154384 by andypugh
Replied by andypugh on topic APT NC PART PROGRAMMING
No.

It could be, as the interpreter is a pluggable component. You can configure the interpreter to be used in the INI file.

There is an example config which uses a non-g-code interpreter:
github.com/LinuxCNC/linuxcnc/blob/master...sim/axis/canterp.ini

This line:
INTERPRETER = libcanterp.so

means that it uses input files that look like this:

github.com/LinuxCNC/linuxcnc/blob/master.../canterp_example.can

So: No, linuxcnc only currently supports G-code and the (example) .can as input files. But if someone wrote an interpreter, it could use any other input file type.

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09 Jan 2020 01:51 #154387 by cmorley
Replied by cmorley on topic APT NC PART PROGRAMMING
but you could apparently use this to convert to gcode:
wiki.linuxcnc.org/cgi-bin/wiki.pl?AptProgrammingForEMC

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09 Jan 2020 18:39 #154465 by Dmess
Replied by Dmess on topic APT NC PART PROGRAMMING
quick answer is YES .

APT 360 & postp ... available from sourceforge is quite easy to install and run once you have a feel for APT.

I have installed it on even a Raspberry Pi-Zero.
There is an EMC post-processor that tailors the code specifically for the linux cnc interpreter.

I have done quite a bit of APT programming and would be glad to assist if required.

All the best
Denis

PS I have a pretty sweet deep hole drill macro that has saved many dollars in tooling if anyone is interested.

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09 Jan 2020 18:50 #154466 by andypugh
Replied by andypugh on topic APT NC PART PROGRAMMING
I think that going through G-code might be inefficient, though.

The LinuxCNC G-code interpreter converts G-code to canonical commands:

github.com/LinuxCNC/linuxcnc/blob/master...l_intf/canon.hh#L199

And the vast majority of what is produced is a sting of straight-traverse, arc_feed and straight_feed commands.

Modifying the APT processor to go straight to these rather than via G-code might be a more satisfactory solution.

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09 Jan 2020 19:12 #154469 by Dmess
Replied by Dmess on topic APT NC PART PROGRAMMING
I believe that postp could be hacked to provide something like that canon link.

Do you have an actual program file in that format I could look at??
The following user(s) said Thank You: bryantthomason@aol.com

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09 Jan 2020 19:40 #154471 by andypugh
Replied by andypugh on topic APT NC PART PROGRAMMING
Who are you asking, and which format?

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09 Jan 2020 19:56 #154473 by Dmess
Replied by Dmess on topic APT NC PART PROGRAMMING
Sorry,
That was for you Andy.
I was referring to the canon format.

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09 Jan 2020 20:12 #154477 by andypugh
Replied by andypugh on topic APT NC PART PROGRAMMING
It doesn't really exist as a file. It is the stuff that gets sent from the interpreter to the motion system in LinuxCNC.

For example, here is what happens when LinuxCNC interprets a G1 command:

github.com/LinuxCNC/linuxcnc/blob/master...erp_convert.cc#L4522

As a demonstration of pluggable interpreters there is a demonstration interpreter called "canterp" that converts files like this to canonical actions: github.com/LinuxCNC/linuxcnc/blob/master.../canterp_example.can
But that shouldn't be created by an APT interpreter, there should not be an intermediate format.

But: Is there really a requirement for this? It is probably a lot of work. Who would use it?

A similar effort might create a STEP-NC interpreter, which might be more useful (or not)
The following user(s) said Thank You: bryantthomason@aol.com

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