| G功能字 | SIEMENS系统 |
| G00 | 快速移动点定位 |
| G01 | 直线插补 |
| G02 | 顺时针圆弧插补 |
| G03 | 逆时针圆弧插补 |
| G04 | 暂停 |
| G05 | 通过中间点圆弧插补 |
| G17 | XY平面选择 |
| G18 | ZX平面选择 |
| G19 | YZ平面选择 |
| G32 | --- |
| G33 | 恒螺距螺纹切削 |
| G40 | 刀具补偿注销 |
| G41 | 刀具补偿——左 |
| G42 | 刀具补偿——右 |
| G43 | --- |
| G44 | --- |
| G49 | --- |
| G50 | --- |
| G54～G59 | 零点偏置 |
| G65 | --- |
| G70 | 英制 |
| G71 | 米制 |
| G72 | --- |
| G73 | --- |
| G74 | --- |
| G75 | --- |
| G76 | --- |
| G80 | 撤销固定循环 |
| G81 | 固定循环 |
| G90 | 绝对尺寸 |
| G91 | 增量尺寸 |
| G92 | 主轴转速极限 |
| G94 | 直线进给率 |
| G95 | 旋转进给率 |
| G96 | 恒线速度 |
| G97 | 注销G96 |
| G98 | --- |
| G99 | --- |
SIEMENS数控系统G功能字的含意
