[the_canuck]

I'm doing a roughing routine with multiple passes and multiple ramps into the material.

Some passes the Gcode is correct with a slow feed rate of 10ipm for the approach and then 150ipm for the cut. Other passes I see the 10ipm for approach but not 150ipm for the cutting. It appears totally random of when it is incorrect.

I'm running. 5.0.2014.610

Here's an example of good code:

G01 Z0.75000 F10
X0.07778 Y4.41123 Z0.74746 F150

Here's the bad code a few passes later:
G01 Z0.75000 F10
X0.03333 Y5.43146 Z0.74455

It's missing the F150. Happens 1 to 2 times in the code on a 45min. job.

Edit: Forgot some important info: I'm using the EMC Post processor.

Andrew

[Dan B]

Is it the default EMC Post processor or has it been edited?

[svenakela]

EMC? The EMC processor is obsolete. You should test the post called LinuxCNC.

[rlrhett]

For what it's worth, I get this exact same error and I'm applying the Mach3 post processor.

It has always happened that the "Z" federate is set, but the "X,Y" feedrate is missed occasionally and seemingly randomly. It has never damaged a part because Z is almost always much lower rate.

Still, it is very annoying.

I am using very old versions, so I never thought to mention it on this site before. (Rhino 3, madCam 2).


Sent from my iPhone using Tapatalk

[svenakela]

You might need to change the post processor to set the speed at every line. Make a copy of the post file and edit, it is totally safe as long as you make new copies of the file,