Change default path following to G61?

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rogerxue
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06 Nov 2017 17:58 #101446 by rogerxue

Change default path following to G61? was created by rogerxue

Is there a way to change the default path following mode to exact? i.e. G61 instead of the blend mode?

thanks

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BigJohnT
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06 Nov 2017 23:27 #101470 by BigJohnT

Replied by BigJohnT on topic Change default path following to G61?

Yes, have each G code program have a good preamble to set up the environment as you need it.
gnipsel.com/linuxcnc/g-code/gen01.html

JT

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rogerxue
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06 Nov 2017 23:38 #101471 by rogerxue

Replied by rogerxue on topic Change default path following to G61?

thanks for the reply, is there a place I can put the preamble in so each file don't need to have it?

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BigJohnT
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06 Nov 2017 23:39 #101472 by BigJohnT

Replied by BigJohnT on topic Change default path following to G61?

Well you could have a subroutine with the preamble and call it at the start of each G code file.

JT

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rogerxue
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06 Nov 2017 23:47 #101474 by rogerxue

Replied by rogerxue on topic Change default path following to G61?

I found this: linuxcnc.org/docs/2.6/html/config/ini_co...sub:RS274NGC-section
seems it is the right place to put the preamble ?
It says: "This is not a substitute for specifying modal g-codes at the top of each ngc file" does that mean each file can override the preamble?

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BigJohnT
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06 Nov 2017 23:51 #101475 by BigJohnT

Replied by BigJohnT on topic Change default path following to G61?

Exactly, never rely on the settings to be as you want after you run a G code file. Always put the preamble in each G code file.

JT

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rogerxue
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06 Nov 2017 23:55 #101476 by rogerxue

Replied by rogerxue on topic Change default path following to G61?

makes sense, but it would be nice to have a fall back default value, in case I forgot to include anything in the G file. In my case, I want to use G61 instead of the default blend mode. Is the RS274NGC the right place to put the default value?

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bevins
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08 Nov 2017 15:03 #101521 by bevins

Replied by bevins on topic Change default path following to G61?

Put it in your preample in your post processor of your CAM....no?

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andypugh
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09 Nov 2017 13:13 #101549 by andypugh

Replied by andypugh on topic Change default path following to G61?

rogerxue wrote:
makes sense, but it would be nice to have a fall back default value, in case I forgot to include anything in the G file. In my case, I want to use G61 instead of the default blend mode. Is the RS274NGC the right place to put the default value?

If you forget to put it in the first G-code file of the day then the INI file section will work.
But after you have run G-code, all bets are off about machine state.

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Todd Zuercher
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09 Nov 2017 15:27 #101560 by Todd Zuercher

Replied by Todd Zuercher on topic Change default path following to G61?

One thing that could be done, that would always work. You could create a script that inserts the line or lines of G-code you want at the start of every file when it is loaded. If you needed different settings in a file, having those codes already in the file, would override the inserted codes for that file, as they would be executed after the inserted codes.

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