The key of macro program containing G code is that macro program can perform mathematical operation and logical operation, so as to realize automatic circle cutting or regular cutting or machining formula curves and other contours! Macro programs can't be separated from ordinary programs, but that value is changeable, that is to say, it is constantly changing! ! And the G code can only be followed by a fixed value! For example, G0 1x 10. Macros can use G0 1x# 1# 1, which can be equal to any number.