KEYENCE LS-5000 - Manual (Page 58)

Chapter 6 Normal Mode
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6
● Self-timing mode
Measurement is automatically performed according to the internal synchronous
signal.
Timing Diagram
Note 1: When the self-timing hold mode is used, the external synchronous input is
ignored.
Note 2: When the reset input terminal and the GND terminal are short-circuited,
the retained value is reset and measurement starts again.
■ Target recognition method in self-timing mode
The LS-5000 series’ self-timing mode takes a specified duration to start sample-
holding after the LS-5001 has recognized that a target has been placed in the
measuring area. (The target recognition method varies depending on the
SEGMENT.)
The LS-5001 can measure a target regardless of the direction it enters the
measuring area from.
Internal measurement Self-timing value
No target No target
Target enters the
measuring area
Target goes out
of the measur-
ing area
Preset
self-timing
interval
Preset
self-timing
interval
Internal
synchronous
signal
Measured
value
ON
(t)
OFF
After the power-ON or RESET input is activated,
“-----” is displayed until the internal synchronous signal is turned ON.
Target enters the
measuring area
Target goes out
of the measur-
ing area