HEIDENHAIN ND 281 B v.2 - Manual (Page 10)

10
Series of measurements: The MIN, MAX and DIFF values of an
uneven surface
Example: Measurement series for determining eccentricity e
Finding Minimum and Maximum Values
DIFF
MAX
MIN
ACTL
Finding Minimum and Maximum Values from a
Series of Measurements
1)
After a series of measurements has been started, the display
transfers the first measured value to the memory for minimum
and maximum values. Every 0.55 ms, the display compares the
current measured value with the memory contents: A new
value is stored if it is greater than the stored maximum value or
smaller than the stored minimum value. At the same time, the
display calculates and stores the difference DIFF between the
current MIN and MAX values.
Display Meaning
MIN Minimum value from the series of measurements
MAX Maximum value from the series of measurements
DIFF Difference MAX – MIN
ACTL Current measured value
Starting the measurement series and selecting the display
You can start the series of measurements either by pressing
MOD and selecting the desired display—as described on the
following pages—or by external signal over the switching
inputs at the D-sub connection EXT (X41, see “Switching
Inputs and Outputs”).
When a series of measurements is started, the internal MIN/
MAX/DIFF memory is reset.
1) Only in the linear measurement mode.