Hello Lee - I have just seen your wiring diagram and thought you might have a view on the following

I have just started getting the equipment together to add limit/home switches to my machine, and have found the following diagrams
Click image for larger version.  Name: Limit Switch Example 1.jpg  Views: 17784  Size: 171.8 KB  ID: 3143Click image for larger version.  Name: Limit Switch Example 2B.jpg  Views: 63516  Size: 87.3 KB  ID: 3144

The first has three wires running to all switches while the second has a serial connection to the switches which includes the emergency cutout. I can see how the second works , but am unable to see why the first has the three wires. - The connection board is the same as shown :

Click image for larger version.  Name: File0011.jpg  Views: 2828  Size: 78.8 KB  ID: 3145

Are you able to comment on this set up and how it compares with your diagram

Would apprcieate anything you have to say

Thanks

Ken