I updated from CM3 to CM4 today (build 412). Now an existing NC file (attached below) generated by Fusion 360 that ran to completion on my Nomad classic fine earlier in the day using CM3 now fails after a while of running with this error:
ERROR (2): GRBL ERROR: The motion command has an invalid target. G2, G3, and G38.2 generates this error, if the arc is impossible to generate or if the probe target is the current position.
1.) I always work in mm and as shown in the settings screenshot, everything is already in mm. Might the other way around also work, i.e. regenerating it in inches?
2.) I don’t think I have ramps but I’ll check
3.) I couldn’t find an option to disable generation of arcs. Do you happen to know where to do that in Fusion 360? Is it one of the options shown in the screenshot above?
We’ll try and take a look at it tomorrow. We’ve been making changes to the arc handling to make sure that arc errors are caught before they are sent to GRBL so this error seems odd.
Just off the screenshot is a “Properties” tab - I can just barely see the top of the arrow in the shot there. Expand it. Uncheck “Allow helical moves”
I’ve been generating a lot of gcode with fusion the past few days, and have had WAY more problems with crashing fusion360 messing with the different operations than the actual output. I think I must have crashed it 50 or 60 times in the course of two days. I think it has something to do with .SVG derived features.
Is there an update on this? Did you get a chance to look at it? I noted this exact issue last April and it’s still preventing me from using CM4 with output produced by Fusion 360.
Griff
(Well crap, my hypometric precursor device is blown…)
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I have an SO3 but, since I installed version 412 of CM I’ve encountered zero arc errors with F360 files.
I see from your original post you were/are running 407. Sorry, I don’t have a link handy, should be easy to find though
Will, could you run a test on one of your Nomads? This is 100% still reproducible, and I’d really like to upgrade to CM4, in order to get the speed-up/slow-down feature.