Path Rule "On lead in"

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David_Lelen01
Posts: 24
Joined: Wed Sep 12, 2018 8:18 pm

Path Rule "On lead in"

Post by David_Lelen01 » Tue Aug 06, 2019 7:02 pm

When a path rule on lead in is created, the post processor now seems to ignore whatever code is under a function OnOffsetLeft or OnOffsetRight.

I need some way for my machine to know which offset direction sheetcam is specifying. It either uses G141 for offset Left or G142 for offset right. If i put the start sequence under OnPenDown, the offset is not captured yet. If is use the OnOffsetLeft then for some reason it is getting ignored when path rules are active.

Is there a better way or different function to do this?
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Les Newell
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Joined: Thu May 11, 2006 8:12 pm

Re: Path Rule "On lead in"

Post by Les Newell » Tue Aug 06, 2019 8:00 pm

SheetCam generates compensated tool paths. It does the offsetting rather than relying on the control to do the offsetting. It looks like you are trying to make your control do the offsetting.

David_Lelen01
Posts: 24
Joined: Wed Sep 12, 2018 8:18 pm

Re: Path Rule "On lead in"

Post by David_Lelen01 » Wed Aug 07, 2019 12:32 pm

That appears to be my problem. The waterjet machine automatically compensates for the kerf width, but it does need to know whether it is supposed to be an inside offset or outside offset. There is no option for it to not compensate that i am aware of. I am trying to get a list of G/M codes for this machine from the manufacturer, but no success yet.

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Les Newell
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Re: Path Rule "On lead in"

Post by Les Newell » Wed Aug 07, 2019 3:38 pm

Does it allow you to define a kerf width of 0 on the machine? That way any offsets it applies will have no effect.

David_Lelen01
Posts: 24
Joined: Wed Sep 12, 2018 8:18 pm

Re: Path Rule "On lead in"

Post by David_Lelen01 » Wed Aug 07, 2019 8:59 pm

No, it doesnt appear to have a way to change it. There seems to be only one nozzle available for this machine and it is hard coded in. It does appear that i can tell it to use tool 0 and it ignores the offset, so that is a possibility.

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