How to wire the enable pin on a stepper drive?

[JAZZCNC]

Clives correct but really if control is done correctly it would go like this.!
PC First then turn on Power to control box which turns on the BOB and Low voltage PSU for safety. Then the drives etc come on when you push the Reset button and only if every thing is safe do so.
This way if the Control software isn't in control and ready. ie: PC crashed Bob will disable motor outputs because no charge pump.
Or if the E-stop is pressed safety system won't turn on the drives, vfd etc.
Or if limit is pressed the system will reset and drives will turn on but won't enable there outputs and also shouldn't allow control softare to reset.