AutoHotkey Community

laserman · Joined: 21 Jan 2008 Posts: 9

Hey everybody, I pretty new to writing scripts, the ones I've written all all pretty basic, so if anybody can help it would be great. I am trying to write a script to edit a text files ( a numerical code file for a CNC machine.) I need to make sure that the line "G91G00Z1.000" is inserted before every line that begins with N#. Where # is any number.

Here's the fun part in the original file some times the line "G91G00Z1.000" is already there, in this case the script would need to skip to the next "N" variable. Also, the number of lines between each variable is not always the same and the number of variable can go as high as 1000.

Here is an example of my text file.

razlin1 · Guest

look up

FileReadLine

in help

should send you on a good path to get most done.

grupo · Guest

The easy way is using a loop to read the file, store the lines in a variable (for example: prev_line).
Check if the current "a_loopreadline" is a "N#" line and "prev_line" is = "g91g00z1.000", if not insert it between "prev_line" and "a_loopreadline"

[VxE] · Joined: 07 Oct 2006 Posts: 1494

laserman · Joined: 21 Jan 2008 Posts: 9

Thanks everyone!! I made one or two small changes and it works like a dream. Now I can sleep better at night and my boss will be happy that our machine is working properly.

engunneer · Posted: Tue Feb 19, 2008 6:52 pm Post subject:

I happen to know CNC code, and it's pretty strange to have a request like that. Are you sure you can rely on there being an N command only in certain places? N is used for generic line numbering, and depending on what wrote the G code for you, it may be place in some cases on every line. Maybe for your current task, you can rely on the N lines, but I wouldn't expect to in a a general case.
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laserman · Joined: 21 Jan 2008 Posts: 9

This is for a sheet metal laser. The only time it uses an "N" is for a new cut. I just needed the cutting head to move up before every cut. The program I use to write the nc code has a bug in it and will not do it in certain situations.

engunneer · Posted: Tue Feb 19, 2008 8:51 pm Post subject:

I work at a place that makes waterjets. We can cut thin sheet metal VERY quickly.

I just wanted to mention the thing with N, since that's an odd thing about your NC Post processor, and isn't common to most NC PPs.
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laserman · Joined: 21 Jan 2008 Posts: 9

Thanks for the info, I am always trying to learn more about NC programming. I've seen some pieces cut on a waterjet, seems that they do a nice job. Btw, engunneer do you know anywhere I can get info on writing NC code "books, web, etc." Thanks for the help.

engunneer · Posted: Wed Feb 20, 2008 4:40 pm Post subject:

I can't help you too much on learning to write NC. The waterjet we sell does all that in the background. You as the user never sees the NC code. We can, however, import the NC code from your laser and turn it into a waterjet file directly, so you don't have to re-draw it. If you have simple questions about writing NC, you could continue this thread or start a new thread in general chat. I can help you with questions, but since each machine is different, only certain things you find on the web will apply to you.
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Unless otherwise noted, all code is untested.
Common Answers: 1.(Loops, Viruses, etc.) 2. Search 3.RTFM