'Create an axis instance with address (1-255). Instances for the three axies are automatically created and can be accessed via reprap.cartesian.x, reprap.cartesian.y & reprap.cartesian.z
These instances are pre-configured with the correct addresses and alow the use of whole machine reprap.cartesian commands.'

def __init__(self, address):

    self.address = address
    self.active = False
    self.limit = 0
    self.speed = None
    self.stepsPerMM = None
    self.units = None
