Q: Emergency Stop alarm appears on GSK980TDa CNC system while the lathe running under AUTO mode, the lathe can be run after reset, but the emergency stop alarm still come.

A: This could be the Emergency switch (or limit switch) open circuit instantly, which caused by mechanical parts vibration.

GSK980TDa Specification:

http://www.cncmakers.com/cnc/controllers/CNC_Controller_System/GSK980TDa.html