No G28 in the beginning

[Anonymous]

Does anyone know how to modify a generic post processor, like Fanuc to disable G28 in the beginning of a program? Our company doesn't need it.

N10 G90 G94 G17 G49 G40 G80

N20 G28 G91 Z0.

N30 G90

How to remove N20 and N30 blocks?

Thanks

[daniel_lyall]

Set show sequence numbers to no for N10, N20 so on that will stop N, why G28, it can be removed with a post processor edit  

gfhgfhgfg.png

[GeorgeRoberts]

Hello,

Thanks for posting. The G28 safe retract line is put in the post processors to ensure the machine is at a safe Z position prior to any movements that could cause issues. If you would like to remove the G28, please ensure you enter in a sensible safe retract line to replace it.

Cheers

[Anonymous · Accepted solution]

I figured it out: moving the } to new place. Thank all of you!

// stop spindle before retract during tool change
if (insertToolCall && !isFirstSection()) {
onCommand(COMMAND_STOP_SPINDLE);
// }  (removed } )

// retract to safe plane
retracted = true;
writeBlock(gFormat.format(28), gAbsIncModal.format(91), "Z" + xyzFormat.format(0)); // retract
writeBlock(gAbsIncModal.format(90));

} //added } here

[GeorgeRoberts]

Hello,

Thanks for posting your progress. Moving the bracket there will still output G28 on toolchanges (if it is not the first one). You can comment out the single line by using two forward slashes '//'. To actually remove this line, change it from this:

 writeBlock(gFormat.format(28), gAbsIncModal.format(91), "Z" + xyzFormat.format(0)); // retract

to this:

// writeBlock(gFormat.format(28), gAbsIncModal.format(91), "Z" + xyzFormat.format(0)); // retract

[schlotterbeckmachine]

This solution removed G28 from the beginning only, correct?

[daniel_lyall]

Depending on what is in the post now a lot of posts are different now compared to 2 years ago.

[schlotterbeckmachine]

In this particular case it is generic fanuc turning that's had some edits made. I'd like to keep G28 prior to tool changes but want it cut out at program start.