在机床运行时，发现有几台机床在运动过程中，个别进给轴的34090会自己变化，想知道这个是怎么引起的，是因为超过了电机编码器的圈数系统自行更改的吗？亦或是伺服电机本身的问题。
最佳答案
你应该用的是绝对值的电机，所以这个值是变化的。具体解释给你查了一下。
? Absolute encoder:
MD34090 $MA_REFP_MOVE_DIST_CORR acts as an absolute offset.
It describes the offset between the machine zero and the zero point of the
absolute measuring system.
Note:
In conjunction with absolute encoders, this MD is modified by the control
during calibration processes and modulo offset.
With rotary absolute encoders (on linear and rotary axes), the modification
frequency also depends on the setting of MD34220 $MA_ENC_ABS_TURNS_MODULO.
Manual input or modification of this MD via the part program should therefore
be followed by a Power ON Reset to activate the new value and prevent it from
being lost.
提问者对于答案的评价：
非常感谢
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