System Programming; Preparation Functions (Gfunction ); G90 G91 Absolute And Relative Programming - Adtech ADTECH9 Series Programming Manual

2.1 Preparation functions (G function)

2.1.1. G90 G91 absolute and relative programming

Function:
Tool motion instructions include absolute value instruction and increment value instruction. In absolute value
instruction mode, the coordinate value of the motion end in current coordinate system is specified; in
increment value instruction, the distance of every coordinate axis relative to the start point motion is specified.
Format:
G90 X_ Y_ Z_ α_;
G91 X_ Y_ Z_ α_;
G90......... absolute value instruction
G91......... increment value instruction
α......... additional axis
Details:
In absolute value instruction mode, the tool motion is unrelated to current position, and moves according to the
position of specified workpiece coordinate system;
In increment value instruction, the current position is the start point;
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ADTECH9 Series CNC Programming Manual

2. System programming