Post Processor for Autodesk Fusion 360

[gjourney]

When posting code from Fusion 360 or CamBam using the Centroid post processor I get this error message "Y axis travel exceeded line xxx" the line number varies depending on which program I post from. In the graph view zoomed out it shows a tool move line far to the top and left of the part which is not in either CAM program. Both parts are zeroed at the top left corner of the actual part. These parts work fine on a Mach3 control but not on the Centroid, am I missing a setting somewhere? This is my second Ajax upgrade, the first is running Machg3 with no issues. With a third kit currently on order, if I can't resolve this problem I'll have to cancel the that kit and find another solution. The report.zip along with a screen shot of the Centroid screen are attached, any help would be greatly appreciated.

[cncsnw]

From your report file:

Code: Select all

CNC11 v. 3.14 coordinates file
Axis     Minus     Plus    Return     Return      Return     Return
         Limit     Limit   #1(G28)     #2(G30)      #3         #4
 X      0.0000   24.2500    0.00000    0.00000    0.00000    0.00000 
 Y    -10.5000    0.0000   10.50000    0.00000    0.00000    0.00000 
 Z     -4.5000    0.0000    0.00000    0.00000    0.00000    0.00000 

You have the Y coordinate of return point #1 (the G28 position) set to +10.5 inches. That is a distance from machine home. Since your machine homes to the Y+ limit, any attempt to move farther plus than that is an error.

You should change your G28 position to be inside your travel limits. Y0.0 would be a good place.

Optionally, you could also change your CAD/CAM postprocessor so that it only moves the Z axis to the G28 position, and not X and Y.

[gjourney]

Thanks for the reply, I'm usually pretty good at figuring out what went wrong myself. My first Boss conversion and Mach3 have been running flawlessly for about six years now, so I was getting very frustrated with this problem. I looked at the G-Code and didn't see anything that would tell the control to move X & Y to that position, only Z to 0, but removing the G28 command resolved the problem. G28 was referenced 4 times in the program, only one instance referenced X and Y and it sent both to zero so I'm not sure why it is causing the problem. I like the Centroid software, but some work is to complex or time consuming to program in it, AutoDesk Fusion works well for those complicated parts.

Thanks,
George

[SEK22Hornet]

I've been using Fusion360 for my Ajax DM45NC mill lately. I ended up using the generic Fanuc post processor.

Dan

[gjourney]

I tried the generic Fanuc and had the same problem, it seems any CAM program that uses G28 in their post processor code generates the same error. If I go through the code and remove all G28 references it will run fine.

George

[diycncscott]

As previously mentioned, the problem is not the G28 code itself, it's that the G28 position has been set to a position that is outside of the bounds of the machine travel.

Set your G28 position correctly and you will no longer get this error.

F1 Setup->F1-Part->F9-WCS Table->F1-Return

Change your G28 X,Y,Z positions to 0, F10-Save

[gjourney]

My apologies, I'm new to the Centroid software and didn't know where that setting was. My first mill runs Mach3 which I am familiar with, the other machines use Cincinnati's software so this is my first Centroid experience. I haven't run any parts yet, but that change does appear to have eliminated the error when loading a file with G28 in the code.

Thanks,
George

[countryguy]

Once you get used to it, I think it's far far superior to Mach3/4 but I am still pretty new too. I love the F8 graph feature when I load up and check things out. gives me a visual to interpert as well. I use it w/ errors to get a sense. Just passing a tip on a feature that I've come to like.
JJ