Is there a difference in how to capture the values of PGL in normal / high speed mode?

I think there is sampling of PGL-050W3 / 180W3, normal / high speed mode.
Is there any difference in how to capture values between normal and high speed? Is it just a difference in time?
There seemed to be a difference other than time. Please tell me. It is used to detect the end face of a steel rod,
It seems that he wants to refer to it in the averaging process when there are fluctuations due to heat and variations due to temperature.

Speed and Accuracy are changed
Normal: 20Hz, Accuracy ± 3mm,
High speed: 100Hz, Accuracy ± 4.5mm

In addition, the speed may be faster or slower depending on the material of the object.
If the speed is fixed, the accuracy will vary. Please evaluate by testing in the usage circumstances.

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