KEYENCE FS-N10 Series - Manual (Page 57)

4-3 Detection Settings (Func)
4
Set
tings
f
o
r
Ad
v
an
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u
nct
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4-11 - Digital Fiber Sensor FS-N10 Series User's Manual -
DATUM2 mode
In DATUM2 mode, the light intensity received
without a workpiece is always corrected to
"
.0 ". The setting value is also corrected
according to the correction amount, so that
the ratio of setting value and received light
intensity is kept constant, with the result of
stable detection. The display of the setting
value does not change.
The DATUM mode is effective in environments where received light intensity varies
gradually, for example where the sensor head is prone to contamination or large
temperature changes.

Sensitivity setting in DATUM2 mode
The sensitivity setting procedure
below is an example of two-point
calibration (where the received light
intensity is "
.0 " when a workpiece is
absent and " 80.0 " when a workpiece
is present) using the thrubeam/
retro-reflective model.
1
Press the [SET] button with no work-
piece present.
2
Press the [SET] button with a work-
piece present.
The light intensity received in the full-light
receiving state is displayed as "
.0 ".
Refer to page 4-2 "Detection Settings (Func)" for setting methods.
" 5.0 "
(Initial value)
" .0 "
Fixed proportion
Received light intensity
Setting
value
.0
100.0
.0
40.0
40.0
80.0
Calibration point (Step 1)
Calibration point (Step 2)
1
2
The DTM indicator
lights up.
Display changes
to "
.0
".