KEYENCE LV-N10 Series - Manual (Page 41)

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3-17 - Digital Laser Sensor LV-N10 Series User's Manual -
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Setting the Current Received Light Intensity to 0 (Zero Shift)
This function adjusts the current received light intensity display to "0". It is primarily
used with reflective sensor heads. If the received light intensity cannot be set to "0"
when a reflective model is installed, this function can be used to set the received light
intensity to "0" with no workpiece present. This makes the difference in received light
intensity easier to distinguish.
Enabling the zero shift function
1
When the PST indicator is off, press
the [PRESET] button and button
simultaneously.
The PST indicator lights in green, and the
received light intensity changes to "0".
Disabling the zero shift function
1
When the PST indicator is on, press and hold the [PRESET] button.
The PST indicator turns off, indicating that the zero shift function has been dis-
abled.
< For reflective models >
Zero Shift Function
Green PST lights up
Current value is "

"
Operating Principle of the Zero Shift Function
In applications for distinguishing colors or
for detecting objects on a background,
the received light intensity will not be "0"
even when no workpiece is present. Applying zero shift input to the lower
level of received light intensity (with
no workpiece present) enhances
the detection display visibility.
0
Received light intensity
Without workpiece
(Background is detected) 200
300
400
450
650
0
Received light intensity
100
200
250
450