Fastus D4RF Series, User Manual

Page: 98 / 138

4-16
[S7] Detection
ON
OFF
ON
OFF
Received light amount
Reset point
Operation point (threshold)
ON at the operation point OFF at the reset point
(Hysteresis set to 20%)
(Hysteresis set to 5%)
Time
Output is repeatedly turned
ON/OFF.
When Hysteresis is
set to 5%
When Hysteresis is
set to 20%
Remains ON until the
received light amount falls
below the set Hysteresis of
20%.
„
Selectable Options
Selectable option Function description
Hysteresis (default value:
5%) 1 to 90%
The reset point is set by subtracting the percentage (%) of Hysteresis from the received
light amount of the threshold.
4-6-2 [S7] - [D2] Threshold mode
Sets the judgment method for object detection.
„
Selectable Options
Selectable option Function description
Standard (default value) This is the standard mode.
The received light amount exceeding or falling below the threshold is judged to indicate
that an object is or is not present, and output to an external device is generated.
Edge height Select Edge height for edge detection based on the differential.
Output is generated only when the difference of received light amounts exceeds the set
range.
Not used Disables the control output, so that it does not operate regardless of the received light
amount and threshold.
For details on Edge height, refer to

“3-7-5 [S7] - [D2] Threshold Mode “Edge height”” (page 3-47).