CM 4 "GRBL ERROR: Feed rate has not been set or is undefined."

I just started getting this error this morning.

  • Connect to theS3XXL
  • Initate homing sequence
  • GRBL: Feed rate error … occurs and I cannot proceed past the Homing Screen

Here is the $$ log capture re $110, $111 & $112

I’m a total GRBL NOOB and have no idea how to correct this error any help would be greatly appreciated.


What CAM tool made this file?

Please send it in to or post it here.

Is this happening before you load any files?


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