SeeMeCNC Rostock MAX v2 Assembly Manual page 110

There are two tie down points located in a straight line between the X and Z towers. These two
points are used to retain the end stop wires that go from the X to the Z tower.
Fig. 7-43: X-Z path tie down points.
Insert a wire tie from below as shown below and pull it tight and clip off the "tail" of the wire
tie.
Fig. 7-44: Tie ready to fix in place.
Rostock MAX v2 Assembly Guide
Fig. 7-45: Tightened & clipped.
110