G49 for Fadal

[belearner]

My Boss use MC X3 and he try to output G49G0Z0 instead of G28Z0(using Fadal generic format1)before the next tool change, but no luck.

Any help? Thank you.

[Thad]

We always used G53 G0 Z0. I'm not sure what G49 is. I can tell you with certainty that it's not required.

 

Welcome to the forum!

 

Thad

[64dodge]

I only use G49 at the end of program when sending home (G49 Z0 X0 Y0 E0). It cancels cutter offset.

I havent used it when changing tools. When you put in H? D? of the next tool it over rides what was there. When I used the original ending in the V8 fadal2 post with a Z +? -? in the fixture offset it would be that much above or below 0. I dont know if thats the correct way but it works for me.

[belearner]

Sometimes, we set Z0 @ centerline of cylinder(below top of part). So when program output: G28Z0 , tool will rapid to Z0 before it get back to Z0(home machine). That's why we need G49Z0G0 ( cancel tool offset and bring tool home)

[64dodge]

I changed our post to do G0G90Z5.0 before tool changes and going home to get above. That clears about 99% of our parts and if it doesnt I change it in editor. I dont know about X3 posts to recomend changes, we are still using Ver 8.1

[Mjölnir]

quote:

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G28Z0 , tool will rapid to Z0

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G91G28Z0 won't go to part zero before going home.

 

I always use G49 to cancel tool offsets on a Fadal though. It's the way I was taught and do it out of habit.

 

G90G0G49Z0 = G91G0G28Z0

[shazam/TPP]

+10000 to Anubis

 

i'll use G0G91G28Z0 or M06 with not tool called out if i want to keep the same tool in the spindle. Many ways of doing the same thing.

I also set workoffset E48 to X center of table and Y with table all the way forward then at the end of the program call out G0 G90 E48 X0 Y0

this way the table comes forward for easy load and unload for the operator.

[Matt Berube at Ferron Mold]

I am pretty sure our old fadal with the CNC88HS control used G0 H0 Z0 at the end of each tool...

[Guest]

Is he trying to edit his post to output this?

[Rob @ Target Machine]

Fadal format 1 and 2 both use: G90 H0 Z0 to return to home position. G49 cancels the G43 H offset (tool length). Using H0 does the same as G49, as there is always a zero in H0.

[belearner]

he is trying to edit his post to output :G0Z0G49

please help. thanks.

[Guest]

he can go into the pretract section pf the post

 

and change this

 

code:

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pcan1, pbld, n$, "G28", "Z0.", strcantext, e$

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and change it to

 

code:

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pbld, n$, sg00, "G49", "Z0.", e$

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[belearner]

Thank, i will let him know that.It's very helpfull forum.

[belearner]

Oh, i forgot that we use G92.