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ADT-CNC4240 铣 床 数 控 系 统 3）Absolute coordinate program and relative coordinate program（G90、G91） Cutter movement instructions are classified as absolute value instruction and incremental value instruction. In the mode status of absolute value instruction, what’s designated is the coordinate value of the end point of movement in the current coordinate system; In the mode status of increment value instruction, is the designated axes relative to the movement away from the starting point. G90………absolute value instruction G91………incremental value instruction For example： From above introduction, we may better understand the programming with both absolute value method and increment value method. Adtech CNC Co.,LTD - 35 -
