Lk-g-m-no3-e, 3 function settings, Sample-and-hold (trigger 1) – KEYENCE LK-G Series User Manual

Page 87

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3

LK-G-M-NO3-E

3 Function Settings

Sample-and-hold (Trigger 1)

• The internal measurement value when the TIMING input becomes ON is retained and outputted.
• In the following cases, the comparator standby status ("------" is indicated) is displayed until the first

measured value is fixed.
When the power is turned on/when the setting is changed/when the program No. is changed/
when RESET is inputted/when auto-zero is inputted

• The comparator output is outputted according to the measurement value.
• The ON state of each output indicates the state where the NPN or PNP open-collector output is turned

on.

• The ON state of each input indicates the state where it is short-circuited between the terminal and the

COM terminal for NPN type, and the voltage is applied between the terminal and the COM terminal for
PNP type.

• The RS-232C output is synchronized with the timing input when "Auto transmission" in the Environment

setting is set other than OFF. (page 3-49)

The TIMING input and RESET input can be controlled using the RS-232C (page 5-8).

When the mode is set without the alarm hold, and a large value is set for the average number of times,
the measurement result may not trigger an alarm. Check the alarm output to ensure that the alarm
state is properly recognized.

Sample-and-hold measurement value

Internal measurement value

Comparator

Measurement

value

Measurement

value

Measurement

value

Measurement value

Measurement value

Measurement value

Comparator

Comparator

t

RESET

process

ON

OFF

TIMING input

Comparator standby

(------ display)

Measurement value

ON

OFF

RESET input

ON

OFF

Comparator output

Binary output

RS-232C output

-------

-------

Reference

Note

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