KEYENCE EX-V Series - Manual (Page 76)

Chapter 4 Use of Data Processing Functions
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Intermittent measurement function [b-1]
Measures the value at a specified instant.
For the intermittent measurement function, you can select the method to specify
the timing by the combination of the trigger mode and delay time.
➮ For the details of the trigger mode and delay time, refer to pages 69 and 70.
Timing diagram
■ External trigger mode
• The value measured at the instant when the timing input turns ON is displayed/
output.
Reference: To clear the measured value being held, short-circuit the hold-reset
and GND terminals.
■ Internal trigger mode (Example of internal trigger up )
• The sampling operation starts when the sampling delay time elapses after the
measured value exceeds the trigger level. When the sampling period elapses,
the internal timing signal is turned ON and the value at the instant is displayed/
output.
• For the internal trigger down operation, the trigger point is the instant when
the measured value falls below the trigger level.
• The instant when the sampling starts, the strobe output turns ON.
• Turning the strobe output from ON to OFF results in the off-delay of 2 ms for
updating the comparator output.
Reference: To clear the measured value being held and to start the measurement
again, short-circuit the hold-reset and GND terminals.
(t) 0
ON
OFF
When the power is turned ON or the hold-reset signal is input,
the display shows " " until the first timing signal is input.
Displayed value
Timing input
Intermittent measurement value
(t) 0
ON
OFF
ON
OFF
ON
OFF
When the power is turned ON or the hold-reset signal is
input, the display shows " " until the first measured
value is determined.
Displayed value
Internal data reset
Internal timing
Strobe output
Trigger point
Sampling delay
Sampling period
Trigger point
Intermittent
measurement value
Trigger level
Sampling delay
Sampling period