HEIDENHAIN ND 287 User Manual - Manual (Page 58)

58
I Working with the ND 287 position display unit
I – 6 Sor
ting and t
o
ler
a
nce c
h
ec
king
I – 6 Sorting and tolerance checking
Sorting function
To sort the parts, the ND 287 compares the displayed value with an
upper or lower sorting limit, and displays the sorting result in color as
a display value and with the appropriate sorting symbol in the status
display:
 Green symbol: =
Values that are displayed in green are within the sorting limits.
 Red symbol: < or >
Values that are displayed in red are smaller than the defined lower
sorting limit or greater than the defined upper sorting limit.
At the same time, the sorting result is transmitted via two switching
outputs (pins 17 and 18) at connection X41 (see "Switching outputs at
D-sub connection X41" on page 95).
 Pin 17
becomes active if the displayed value is smaller than the
lower sorting limit.
 Pin 18
becomes active if the displayed value is greater than the
upper sorting limit.
The sorting and tolerance checking mode sorts the display value into
one of the three following classes:
 Within tolerance
 Above tolerance
 Below tolerance
This means that the sorting limits correspond to the tolerance limits of
SPC.
Fig. I.66 Status display for sorting and tolerance
checking