我随便翻了一下，你也就随便看一下哦
$P_F： is used to read the last programmed path feed F.
$P_F常用来读取最近点编程路径下的进给率F。

$AC_OVR：Path override factor 路径倍率系数
Variable $AC_OVR determines the active path override.
变量用来确定激活路径倍率。
The path override is calculated by multiplying the operator override,
倍率是从操作倍率通过乘法计算而来的。
The programmed override and the override defined via synchronized actions.
编程的倍率和机床倍率开关定义了机床的同步动作。
The overall factor is limited to the maximum value defined by machine data $MN_OVR_FACTOR_LIMIT_BIN or $MN_OVR_FACTOR_FEEDRATE[31].
这个总系数限定了机床$MN_OVR_FACTOR_LIMIT_BIN or $MN_OVR_FACTOR_FEEDRATE[31].的最大值。
A programmed value is included in the calculation in absolute terms.
所有编程的值在程序中按绝对值计算。
If a value less than 0.0 is programmed, alarm 14756 is output.
如果在编程中这个值小于0，报警14756生效。
The value of the variable must be rewritten in every interpolation cycle or else a value of 100% is applied.
这个变量值必须在每一个插补循环开始时被重新写入，否则将默认使用100%的倍率修调值。


$AC_DTBW ：determines the geometric distance from the block start in the workpiece coordinate system.
确定了机床到程序块开始处在工件坐标系内的几何距离
The programmed position is used to calculate the distance.
这个编程部分被用来计算距离。
If the axis is a coupled axis, the position component derived from the axis coupling is not considered.
如果这个轴是联动轴，这个位置数据的采用将取决于联动是否生效。


$AC_VACTW：Path velocity in PCS （laser compensation）
Path velocity in the workpiece coordinate system
在工件坐标系中的轴速度
The velocity is calculated from the velocities of the geometry axes - independent of FGROUP.
这个速度是从几何轴速度中计算出来的——不受FGROUP功能的控制。
The variable can be accessed only from synchronized actions
这个变量可只可用于同步动作。