Dongguan CNC factory so far, all discussions assume that the absolute programming method is adopted. The most common NC code used to specify absolute mode is G90. In absolute mode, all the movement end points are specified at the start point of programming zero. For beginners, this is usually the best and easiest way to specify the end point of axis motion, but there is another way to specify the end point of axis motion. In incremental mode (usually specified by G91), the designation of the end point of movement is based on the current position of the tool rather than programming the zero point. In this way, when specifying the axis movement, the programmer often asks, "how far should I move the tool?", Although incremental is useful most of the time, generally speaking, it is difficult to specify the axis movement. Beginners should focus on absolute mode.
Dongguan CNC processing factory must be careful when command axis movement. Beginners often think in incremental ways. If working in absolute mode (as beginners should), the programmer should always ask "where should the tool be moved?", This position is relative to the fixed position of programming zero, not the current position of the tool. Absolute operation is easy to determine the current position of the command, and in addition, another benefit of it involves errors in axis motion. In absolute mode, if one axis motion command of the program is wrong, only one motion is incorrect. On the other hand, if there is an error in incremental motion, all movements are incorrect from the point of error