Unipulse DeviceNet F381A, Operation Manual

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79
4 SETTINGS AND CALIBRATIONS
79
SETTINGS AND CAL
IBRATIONS
Chapter
4
■
Example timing chart using the waveform comparison function
- Reference; Front
(Relative Comparison not in use)
t1: Delay time between the instant when the Start input is turned ON and the instant when all
outputs but Run are turned OFF ... Approx. 5ms
t2: Delay time between the instant when the Start input is turned OFF and the instant when the
measurable section is started. It varies depending on the time of crossing the Start Load.
t3: Delay time between the instant when the measurement is stopped (the Stop input is turned
ON) and the instant when the Result output is turned ON ... Approx. 50ms (However, there
are differences between measurements.)
t4: Delay time between the instant when the Result output is turned ON and the instant when
the Complete output is turned ON ... Approx. 30ms
- Turning OFF → ON the external input signal “Start” releases the hold, and turns OFF all outputs
but Run. (Reset operation by the Start input)
- Turning OFF
→
ON the Stop signal or taking data of 2048 points turns ON the Complete signal.
- Once the judgment of output becomes LO or HI, the output is maintained.
- OK turns ON if the Compare Area is passed through during measurement and the result is not LO
or HI after completion of measurement.
Load
Compare Area
Wave Result
Start load
Stop input
OFF
ON
Start input
OFF
ON
Complete output OFF
ON
OK output
Wave Result
LO or HI output
Measurement section Calculating
Output OFF HI output
Output OFF
OK is output if
Result is not LO or HI.
Reset operation
t4
by the Start input
t3 t1
t2
Waveform comparison
judgment point
Time or displacement
Sensor
input
value
Result of the
previous
measurement
Result of the
previous
measurement
If the measurement does not reach the Compare Area, all Wave Result outputs
turn OFF.
Point