function m3()
  local inst = mc.mcGetInstance()
  local fwd = mc.mcSignalGetHandle(inst, mc.OSIG_OUTPUT7) -- Enable -> P12.0
  local st  = mc.mcSignalGetHandle(inst, mc.OSIG_OUTPUT8) -- Start  -> P12.1
  mc.mcSignalSetState(fwd, 1)
  wx.wxMilliSleep(200)
  mc.mcSpindleSetDirection(inst, 1)
  mc.mcSignalSetState(st, 1)
  mc.mcSpindleOn(inst)
  mc.mcCntlSetLastError(inst, "M3: Enable->delay->Start")
end