The latest code for o-word subroutines permits multiple files to be used. If
the "called" o-word has not been seen in the current file, the interpreter
will look for a file named the same as the o-word with a suffix of ".ngc".
The interpreter will look in the location specified by the "PROGRAM_PREFIX"
variable in the DISPLAY stanza of the .ini file.
So, "o101 call" will look for the file 101.ngc, "o<pocket Hole> call" will
look for the file pockethole.ngc. [Remember that characters are converted to
lower case and white space is removed in gcode files.]
The PROGRAM_PREFIX variable can be rooted ("/home/lerman/GcodeSubroutines")
or relative ("GcodeSubroutine/Mill").
Be aware that this has not been fully tested.
One really neat aspect of this is that one can write a file containing a
subroutine and put the test code at the end. If the file is run directly,
the test code will be executed. If the file is loaded on demand, the test
code will not be executed. That's a purely accidental consequence of how
things have been defined, but it's still prety neat.
Ken
----- Original Message -----
From: "Dave Engvall" <[EMAIL PROTECTED]>
To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: Friday, March 21, 2008 12:47 PM
Subject: Re: [Emc-users] newb question: multiple cnc program over
multiple*.ngc files
> Hi,
> It would indeed be a nice feature if one could use a script to
> sequentially run a series of g-code files. :-)
>
> Dave
> On Mar 21, 2008, at 8:51 AM, Stephen Wille Padnos wrote:
>
>> rtwas wrote:
>>
>>> Hello,
>>>
>>> In the "Language Overview" section of the manual:
>>>
>>> http://www.linuxcnc.org/docs/2.2/html/gcode_main.html#cha:Language-
>>> Overview
>>>
>>> I'm seeing this line:
>>>
>>> "A single program may be in a single file, or a program may be spread
>>> across several files.".
>>>
>>>
>> I suspect that they're referring to the idea that you can use multiple
>> files to machine a single part. There is no feature that allows
>> you to
>> "include" or "chain" G-code files.
>>
>> What some people do is make separate G-code files for each tool or
>> process (roughing, finishing) they need. Since you don't lose machine
>> position when you load a new file, you can split a long series of
>> steps
>> into multiple shorter files.
>>
>>> However the only way I can see to make use of g-code over multiple
>>> files
>>> is by using "m100-m199"
>>>
>>>
>> Custom M codes can't command any motion, and they aren't G-code files,
>> they're external programs (as in computer programs - you could run an
>> editor with an M code if you like).
>>
>> - Steve
>>
>>
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