Grbl Wiki

Settings and sample valuesDescription
$0=10Step pulse, microseconds
$1=25Step idle delay, milliseconds
$2=0Step port invert, mask
$3=0Direction port invert, mask
$4=0Step enable invert, boolean
$5=0Limit pins invert, boolean
$6=0Probe pin invert, boolean
$10=1Status report, mask
$11=0.010Junction deviation, mm
$12=0.002Arc tolerance, mm
$13=0Report inches, boolean
$20=0Soft limits, boolean
$21=0Hard limits, boolean
$22=1Homing cycle, boolean
$23=0Homing dir invert, mask
$24=25.000Homing feed, mm/min
$25=500.000Homing seek, mm/min
$26=250Homing debounce, milliseconds
$27=1.000Homing pull-off, mm
$30=1000.Max spindle speed, RPM
$31=0.Min spindle speed, RPM
$32=0Laser mode, boolean
$100=250.000X steps/mm
$101=250.000Y steps/mm
$102=250.000Z steps/mm
$110=500.000X Max rate, mm/min
$111=500.000Y Max rate, mm/min
$112=500.000Z Max rate, mm/min
$120=10.000X Acceleration, mm/sec^2
$121=10.000Y Acceleration, mm/sec^2
$122=10.000Z Acceleration, mm/sec^2
$130=200.000X Max travel, mm
$131=200.000Y Max travel, mm
$132=200.000Z Max travel, mm