Hi Michael
with the mains supply connected to terminals 13 & 23
when you press the green button terminal 14 is internaly connected to one end of the coil
the free end of the coil is terminal A1 that needs connecting to terminal 24 to latch the switch ON
by connecting A1 to 24 via one of the E-stop switch N/C contacts
the switch will open when the E-stop switch is open
the E-switches second set of N/C terminals can be connected to the BOB's input pin 10 & common to signal an E-stop to mach 3
is this any easier to follow ?
John