[Issue#175] Option to HALT if error is reported from machine interface

#1 – dirtdiver9 于 2017-07-02

Hi Peter,
What CAM software were you using? Was there something special you were doing with it? Just curious so I don’t hit the same issue.

Having the machine halt would be nice for me as well. I was getting errors and if it would have stopped I could have saved the work piece.

Thanks!

—Patrick

> On Jul 2, 2017, at 10:38 AM, Peter Boin wrote:
>
> I’ve recently encountered an issue with my CAM software creating G2 (arc) commands that are outside the tolerance of Grbl.
> This results in the error being reported by Grbl, and is not processed by the machine… which is fine.
>
> The issue is that the next GCode block is sent to the machine and it continues.
>
> In this event, could there be an option to stop gcode streaming and run a macro?
>
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#2 – fragmuffin 于 2017-07-03

Hi @dirtdiver9
I was using heekscad (heekscam) (more details in this comment )

Because I’m paranoid about my machine breaking itself (because I don’t have any money to replace it ) I’m writing a gcode python library so I can write a post-processor to clean up & validate any gcode I send to cncjs.
Currently in development (so it’s currently empty), but if you’re interested: https://github.com/fragmuffin/pygcode
I’m coding as much of it as I can today

#3 – fragmuffin 于 2017-07-07

Could a “gcode interpreter error” be added as a possible Event, then we could simply add an event to trigger M0

#4 – fragmuffin 于 2017-08-13

to quote grbl documentation:

> It’s highly recommended to do what all professional CNC controllers do when they detect an error in the G-code program, halt. Don’t do anything further until the user has modified the G-code and fixed the error in their program. Otherwise, bad things could happen.

source: https://github.com/gnea/grbl/wiki/Grbl-v1.1-Interface#g-code-error-handling

#5 – cheton 于 2017-08-13

It is doable to pause sending G-code when detecting an error, and user can then choose to continue or stop the job.

#6 – cheton 于 2017-08-14

I will add an option (radio button) to the Settings > Controllers page in the next release, it might look like below:

G-code Error Handling
– [x] Pause on error (default)
– [ ] Skip errors and continue to execute the program

#7 – cheton 于 2017-10-06

Added in the commit (d16264a4f53b7b2d9cf19441cea44176ddfbe134). Defaults to pause execution when the CNC milling controller detects an error in the G-code program.

#8 – fragmuffin 于 2017-10-07

nice one @cheton !

#9 – cheton 于 2017-10-13

https://github.com/cncjs/cncjs/releases/tag/v1.9.11

Now the behavior will be changed to pause execution on error