Resuming Job from a specific g-code line ??

only by Editing the gcode, because:
a) you need to bring in any Modal gcodes that was active from earlier in the job (offsets, spindle, modes, mm/inch, absolute/incremental, etc)
b) you need to write gcode to position the endmill correctly just prior to the first move you want to run from

That why its almost impossible to automate -> gcode is a conversation with the controller, things lead up to the line you want to run, you (as a human) can add whats needed, setup the machine in the right spots, and right offsets, and correct zero. A programme can not. It really boils down to "better know what you are doing or it will just crash"

 

The best and easiest way to do this is to use bCNC (you dont have to be using it to run the machine!)
open the gcode in bCNC
click the editor tab
uncheck the blocks that have already been cut. the 3D view will show you what block you have selected, very easy to see what it going on. (but do not uncheck the first block, the or any other one that sets modal parameters like G90 G21 G17 etc)
save the file.

now you can load the file into your actual controller and carry on. I usually load bCNC on my work PC just for previewing Gcode, then i transfer the code through the network to the laptop that drives the machine.

 

Yeah, couple months now. That email was the announcement after all
Under Wizards and tools, or as right click in Gcode editor. Still beta of course

 

You can still use it to prep recovery gcode, then take that to the Interface

 

You can still use it to prep recovery gcode, then take that to the Interface

 

Correct, if its not able to load into the editor, we can't edit it. Sorry

 

you can use bCNC to edit the code, it splits the code into blocks on Z motion, when you click a block it highlights it in the preview.
you don't need to put bCNC on your controller pc, any PC will do since you are just editing the code.
in thre bCNC editor you highlight and 'untick' the block tha t have already been cut, keeping the first 1 or 2 (the header and initial position moves) and untick the rest up till the one that stopped cutting.
save the file and transfer it to CONTROL.
note that bCNC does not delete anything from the file, it just comments it out, so you can reload it and turn blocks back on if you need to.

 

all GRBL based systems have 2 parts, the controller (a Blackbox in our case) and the sender, usually a PC based GUI program that sends the Gcode to the controller.
OpenBuildSCONTROL is our preferred GUI for beginners, it is simple to use and performs all the basics.
others you may have heard of are UGS,iosender,candle
bCNC is such a GUI, written in Python and works on all platforms, and has many extra features including the mentioned editor that makes turning blocks on and off trivial.

You don't even have to have it on your controlling PC and use it for connecting to the machine, you can use it on some other PC to just edit the gcode then send the gcode to wherever you need it (like an Interface)

GitHub - vlachoudis/bCNC: GRBL CNC command sender, autoleveler and g-code editor