... signal, the speed range is 0-20000rpm.Spindle override: Total 8 levels: 50%~120%, real-time adjusting Spindle constant surface speed ... ports,each with input in 16 Points/Output in 8 PointsMan-machine interface 8.4″large screen LCD, the resolution is 234×480Display ... travel limitSoftware travel limitData restoring and recovering GSK 988T Turning Machine CNC System