Originally Posted by
SCzEngrgGroup
With the stock wiring, the FAULT outputs from the servo drives are wire-ORed into the one of the E-Stop circuits on the BOB. Whenever E-Stop is asserted, whether due to hitting a limit, hitting one of the E-Stop switches, or a servo fault, ALL of the Step/Dir outputs from the BOB are disabled by logic on the BOB. The drives are left powered, but no longer receive step pulses, so the axes all stop as quickly as they can. Similarly, the spindle drive outputs (control voltage and FWD/REV signals) are also de-activated by the same logic on the BOB, so the spindle also stops as quickly as it can.
Regards,
Ray L.