What input are you using for the Drive Fault?
Goto Config - System Hot Keys
Enter Feed Hold (1001) to OEM Trigger #1.
See first picture.
Then goto Conf - Ports & Pins - Input
Scroll down to OEM Trigger#1.
Enter the port number that you are using for the EStop.
See 2nd picture.
If you post your xml file we can help you with the final
step of removing the drive fault to Estop.
As BR549 said, be sure to think thru the "what if's".
Safety first.
Hope this helps!! I know its confusing as there is several
things that have to be done.
olf20 / Bob