Display method of modal G code of numerical control system

The invention relates to a display method of modal G code of a numerical control system. G code of HMI can be arranged and displayed in multiple groups orderly; G code contained by an NC program thatis executed is fed back; a present execution state of a machine tool is described accurately; the related G code application frequency and condition are observed; and G code related to a default system is determined. Thus, the modal G code execution condition in the execution process of the numerical control system is more convenient to observe, realization condition of related modal G code in concrete operation of the machine tool is convenient to analyze, problems in the using process of the modal G code are analyzed, the program compiling and execution efficiency of the numerical control system can be optimized, and display of the modal G code is more significant in onsite processing of the numerical control system. 本发明设计了种数控系统模态G代码的显示方法，在HMI上G代码能工整划分成若干组排列显示；用于反馈正在执行的NC程序段所含的G代码；用于精准描述当前机床执行状态；用于观察相关G代码应用频率、使用