Q: The GSK980TA alarms for “F speed too fast” while machining the screw thread, as long as the screw thread pitch over 25mm. Why?

A: The Z speed must beyond the CNC system interpolation speed while cutting the screw thread.

GSK 980 TA Specification:

http://www.cncmakers.com/cnc/controllers/CNC_Controllers_for_Lathes/GSK980TA.html