KEYENCE FS-N10 Series - Manual (Page 55)

4-3 Detection Settings (Func)
4
Set
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r
Ad
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4-9 - Digital Fiber Sensor FS-N10 Series User's Manual -
DATUM1 mode
In DATUM1 mode, the light intensity received
without a workpiece is always corrected to
"
100.0 ". 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 DATUM1 mode
The sensitivity setting procedure
below is an example of two-point
calibration (where the received
light intensity is "100.0" when a
workpiece is absent and "20.0"
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 full-light
receiving state is displayed as "
100.0 ".
Refer to page 4-2 "Detection Settings (Func)" for setting methods.
Received light intensity
Fixed proportion
" 100.0 "
" 5.0 "
(Initial value)
Setting
value
0
100.0
100.0
20.0
60.0
60.0
Calibration point (Step 1)
Calibration point (Step 2)
1
2
The DTM indicator
lights up.
Display changes
to "
100.0 ".