In addition to manual or computer-assisted programming., macros are used to provide a special solution to a special requirement. In spite of the great advancement of CAD/CAM software, macros have their special place. In this general introduction to the subject of macros and parametric programming, the most common development tool is known as Fanuc Custom Macros B. Typical programming methods will use an incremental method of dimensioning. 30, a complete toolpath is developed for one pocket, stored as a subprogram, and called at the equivalent location of the three remaining pockets. In the example of a simple subprogram application Fig. Nesting is a feature that allows one subprogram to call another subprogram up to four levels deep. Method 3: M98 P00056001 will repeat subprogram O6001 five times Method 2: M98 P6001 K5 will repeat subprogram O6001 five times Method 1: M98 P6001 L5 will repeat subprogram O6001 five times That is achieved in three ways, depending on the control system: If required, a subprogram can be repeated, up to 9999 times. The address O is used for storing the subprogram, address P is used for calling the subprogram. Another miscellaneous function - M98 - is used to call a previously stored subprogram, for example M98 P6001. The end of subprogram uses the M99 function, which transfers the processing put of the subprogram back to the program of origin. Any repetitive toolpath or machine activity is suitable to be developed as a subprogram.Īny subprogram has to have a number (for example O6001), in the same format as the main program (or other program of origin). The main advantages of subprograms include transportability between programs (even machines), shorter programs, and easier editing. For variable type subprograms - called macros - a special control option is required. The content of standard subprograms is fixed and can be used only for the intended, specific purpose. Such repetition can take place in one program or in several programs.
Subprograms (also known as subroutines), are specially designed programs that can be called on demand by another program and repeated as desired. This article reviews the use of three common methods which are subprograms, macros, and parametric programming.
Macro programming language list code#
CNC programs use several techniques to allow the programmer to create complex pieces of code using CNC code building blocks.
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