text: <s>[INST] ultra 3000 sercos loosing enable Summary: loosing enable signal and no faultsI have a client with 4 drives on Sercos. all 4 drives have same hard wired enable signal. Drive [/INST] Are you running this via ControlLogix and RS5000? You could use the trending tool (a software scope) to track a number of tags associated with the drive to see what might be dropping it out. \\n </s>