Post creating high feedrate F500

[SGoldthwaite]

I can't figure out where I'm getting an F500 feedrate.  Here is part of the post (I'm using Haas Generic with Fusion 360 on Win 7 computer).

(Center Drill Small)
G0 Z3.
G1 X2.75 Y0. F500.
G0 Z2.
G98 G83 X2.75 Y0. Z-0.35 R1. Q0.15 P0 F3.5
G80
G0 Z3.
M5
G28 G91 Z0.
G90


Attached is a screenshot of the CAM setup.  I also attached the Fusion design.

I've got the same problem on another operation called ChamFer Hole.  It seems to be when I have two operations that use the same tool and the machine wants to rapid over to the next operation.
 

[AchimN]

Exactly this is why it is using G1 with a high feedrate instead of using G0 to avoid non synchronized motion in X and Y.
The highfeedrate is defined into the post dialog.

[SGoldthwaite]

Okay thanks.  I turned on the G0 option and that seemed to work. 

[AchimN]

Ok but be careful that you might have non synchronized movements which could result in the known problems using G0 on a Haas for X+Y moves.

[SGoldthwaite]

Can you elaborate?  I don't know what non synchronized movements are.

[AchimN]

Non synchronized moves are eg moving X + Y the same time with G0. Usually this should be a single straight line from point A to point B. Now it could be that either the x-axis or the y-axis is faster than the other so it would not be a straight line between point A/B.

Example, moving from X0 Y0 to X100 Y100 could look like the red arrow into the picture attached or like the blue arrow(where X would be faster than Y).
The reason why we use G1 instead of G0 is to get a result like the red arrow is showing.
You would not see this behaviour in any simulation, but i guess you would hear it on your machine 😉

[Steinwerks]

Haas as of at least March 2012 (our software) will display rapids in the simulation that runs in Edit mode.

Non-synchronized is better known as dogleg rapids/motion.

SGoldthwaite: what year is your Haas? You can retain G0 and set the machine to work in high-feedrate mode all the time if you don't want to worry about dogleg motion, depending on the year.

[SGoldthwaite]

N. Stein wrote:
Haas as of at least March 2012 (our software) will display rapids in the simulation that runs in Edit mode. Non-synchronized is better known as dogleg rapids/motion. SGoldthwaite: what year is your Haas? You can retain G0 and set the machine to work in high-feedrate mode all the time if you don't want to worry about dogleg motion, depending on the year.

The Haas is 2005