我查了下手册，找到了如下内容
If a synchronous operation group is ended using a _disable command with a very short
desynchronization length, high dynamic response values result that must be replaced using
discontinuous acceleration. If the _disable command is replaced before its ending by a new
motion command with continuous velocity profile, the still-present high acceleration values
are replaced prior to processing the added command. This results in a longer traversal
distance of the axis that can also cause the reversing of the axis.
In cases in which an immediate replacement of the synchronous operation is necessary, for
the described reason, no _disable command should be used, but rather an immediate switch
made to the replacing motion command. In this case, the jerk for the following command
may need to be increased.
If no _disable command is necessary, the subsequent move/pos command for a continuous
velocity command should possess high dynamic response values or traverse using a
"trapezoidal profile".

文中提到了去同步化长度很短的时候会出现轴反转；
其中的“using discontinuous acceleration” 该如何理解？实际中是如何应用的？
_disable 指令在结束之前被新的带有连续速率轮廓的运动指令替代，在处理随后的指令之前仍然存在的高加速度值被替代，这将导致一个更长的横越距离同时会导致轴反转。
按文字描述，貌似同步操作如果必须立刻被替换，可以不使用_disable相关指令，而直接使用新的运动指令！
同时新的运动指令中的jerk值需要增大，这个增大该如何增大呢？是相对与同步指令中的jerk值进行增大吗？一般增大多少？如何计算？