3-12
Setting the Threshold (Teach Function)
Mechanism of the Threshold Setting
The threshold is set to the value obtained by adding the specified percentage to the received light amount
during execution of the teach function (with no object present).
Example) When the received light amount during execution of the teach function is 100 and the detection
margin is 10%
If the received light amount when no object is present (the level for the background) is 100, the
threshold is set to 110.
* Due to the addition of a hysteresis value with detection margin, actual threshold differs slightly from this
example.
CAUTION
If the background is a bright color and the object is a dark color, detection may not be possible with the 1-point teach
function. This occurs when the received light amount from the object is lower than (or equal to) the received light
amount from the background.
If objects cannot be detected well with the 1-point teach function, try other modes such as the 2-point teach function.
Received light amount from background: 100
Threshold (initial setting of 10%): 110
To Next Page
Loading...