![]() Preparatory function, G followed by a numerical code, specifies machining modes Units per minute (inches, millimeters, degrees, etc)Ī single word of G-Code is a letter followed by a number. Point in a coordinate system where X, Y and Z are zero G90 and G91Īctive until a code from the same group is calledĪ line perpendicular to a plane, pointing in the positive direction. Velocity, set by F, at which an axis will moveĬollection of G-Codes that control the same function or mode, i.e. Required at the end of every block of G-Code. Program pause with a duration defined by “P” in seconds. Axis directions follow the right hand rule, see figure A.Ĭomplex cycle defined by a single block of code, used to simplify programming In many machines the work piece will move in more axes than the tool however the program will always define tool movement around the work piece. Mach4 has made a large leap closer to this standard.Īn important point to remember when reading this manual: In describing motion of a machine it will always be described as tool movement relative to the work piece. The basics, however, are much simpler than it first appears and for the most part follows an industry adopted standard. It is a language that can be quite complex at times and can vary from machine to machine. G-Code is a special programming language that is interpreted by Computer Numerical Control (CNC) machines to create motion and other tasks. ![]()
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