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Through-beam Sensor Heads: FUN M ode Functions
n Self-bottom Hold
In Self-bottom Hold Mode, measurements are performed while the mea-
sured value is smaller than or equal to the self-trigger level, and the mini-
mum value in the period will be the output value.
Hold Mode starts when the power is turned ON, immediately after chang-
ing to RUN or T Mode, or immediately after the reset input is turned OFF.
The output is held at the maximum output (current: approximately 23 mA,
voltage: approximately 5.5 V) until the first sampling period is finished. The
first measured result (A in the figure below) is output from the end of the
first sampling period to the end of the second sampling period. After the
second sampling period, the second measured result (B in the figure
below) is output and the sequence is repeated.
Sampling is not affected by the timing input in Self-bottom Hold
Mode.
POINT
Current (mA)
23
Self-trigger
level
4
Hold Mode
Start
The output is clamped on
the maximum value until
the first sampling period
is finished.
A
Sampling
Example: Self-bottom Hold
Display value = Output value
Measured value
Outputs A.
B
Sampling
Section 3-8
Outputs B.
Time
95
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