Hi all
I’m trying to find a screenshot or location in settings for ‘Feed rate’. Its an Error22 “No rate defined at or near line 0” issue that Yanus is having and I’m learning by helping to resolve but not finding much in the way of images/screenshots that might speed things up a bit.
It’s the layer speed, translated into mm/min for GRBL’s consumption, and plunked into the G-Code for use by G1 motion commands.
It’s modal, so it will remain in effect for subsequent commands.
GRBL follows the LinuxCNC dialect, although it does not implement all the axes and options:
https://linuxcnc.org/docs/stable/html/gcode/other-code.html#sec:set-feed-rate
https://linuxcnc.org/docs/stable/html/gcode/machining-center.html#sub:feed-rate
AFAICT, that typically happens with an incorrect device definition, causing LightBurn to generate G-Code the machine controller can’t understand. But I’ve given up trying to debug diode laser problems, because the number of GRBL variations is beyond my comprehension.
Thanks Ed
I read previously about the ‘hand me down’ cnc code to diode…but the problem arising randomly seems odd. Code is code and should be consistantly ok or not…Garbage in garbage out!
I also read recently that LB may fill in the blanks or translate/Aproximate to its best ability when given data it cannot resolve…This can IMO only be sourse of code or users settings applied/not applied issues.
Thanks for the link’s
Oh, Ps, I thought feed rate was data transfer related…baud, buffering etc, I see now it is mm/Inch per Min/sec. Not sure if it relates to the issue but will find out.
If I had a dollar for every “I couldn’t possibly have clicked that button” error, especially my own, I’d be intolerably rich. 
AFAICT, it’s pretty much deterministic: given a machine configuration and a workspace layout with all the layers, it’ll do the same thing every time. Now, if you change something, perhaps at random due to a mis-click, the result will certainly be different.
Bonus: USB errors due to cable / controller QC failures cause all manner of bewildering symptoms.
He’s using wifi, QC & control board…Inocent till proven…