Let the fun begin !!! ???

[JAZZCNC]

if i connect the enable +,- as in the picture does that mean i don't need the enable +,- connected to the BOBs corresponding terminals?

Probably not but Depends on the BOB.! . . . what are you using.?
It's common for the Enable on drives to not be connected but in this case we are using it to ensure no signals get to the drives so no movement can happen while at same time leaving the motors energised and Holding position.

1 last query to get me further down the road if you don't mind, am i right in saying that the limit input to the bob and on to MACH 3 is enough to get the motors into reverse when the override is triggered?

Yes but you have to Hold down the Override Button to allow Mach to Reset so you can Reverse off the switch at which point the Relay will stay ON and mach will remain Reset untill something changes. Over riding anything should be warned about and thats why I use a buzzer but it is optional.