1. The homing sequence starts with movements in all directions to trigger each light gate twice.
2. Once a roughly central position is found, the Equator will move towards the end position of each scale until
it registers the reference mark, starting with the strut at the back of the machine (axis labelled P).
3. The same procedure takes place for the strut on the left hand side.
4. The same procedure takes place for the strut on the right hand side.
5. Homing finishes with the probe roughly in the centre of the working volume.
64