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: 22143  Size: 171.8 KB  ID: 3143Click image for larger version.  Name: Limit Switch Example 2B.jpg  Views: 68508  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 :

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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