$0=10 (step pulse, usec)
  $1=25 (step idle delay, msec)
  $2=0 (step port invert mask:00000000)
  $3=0 (dir port invert mask:00000000)
  $4=0 (step enable invert, bool)
  $5=0 (limit pins invert, bool)
  $6=0 (probe pin invert, bool)
  $10=3 (status report mask:00000011)
  $11=0.010 (junction deviation, mm)
  $12=0.002 (arc tolerance, mm)
  $13=0 (report inches, bool)
  $20=0 (soft limits, bool)
  $21=1 (hard limits, bool)
  $22=0 (homing cycle, bool)
  $23=0 (homing dir invert mask:00000000)
  $24=25.000 (homing feed, mm/min)
  $25=500.000 (homing seek, mm/min)
  $26=250 (homing debounce, msec)
  $27=1.000 (homing pull-off, mm)
  $100=66.667 (x, step/mm)
  $101=66.667 (y, step/mm)
  $102=2560.000 (z, step/mm)
  $110=2500.000 (x max rate, mm/min)
  $111=2500.000 (y max rate, mm/min)
  $112=500.000 (z max rate, mm/min)
  $120=25.000 (x accel, mm/sec^2)
  $121=25.000 (y accel, mm/sec^2)
  $122=10.000 (z accel, mm/sec^2)
  $130=200.000 (x max travel, mm)
  $131=200.000 (y max travel, mm)
  $132=200.000 (z max travel, mm)