Hello, in order to speed up thread withdrawal, first of all, your NC parameter 1626 is set a little too large, which is the waiting time of thread withdrawal, and can be set to 0 as ms. In addition, if it is set to 0, the speed will not change, so you should stick to your spindle encoder, and the thread needs the spindle not to rotate. You can read the explanations of parameters 1600 to 1627 in fanuc 0i-mate-td parameter specification in detail to learn.