KEYENCE LT-9001 Series - Manual (Page 63)

3
Chapter
Operations
and
Fun
ction
Settings
in
the
Displacement
Mo
de
E LT-9001-IM
Displays and outputs the DARK ALARM when the
light intensity peaks are not measured within the
set range.
When every light intensity peak is under the lower
limit of the set range, the system goes into the DARK
ALARM status. It recovers when the light intensity
peak of one or more surfaces exceed the upper limit.
The procedure used to set the DARK ALARM is
explained as follows.
1 Select [DARK] from [BASIC] on the program
mode screen.
The dark status setting screen appears.
2
Select [DARKOUT].
3
Set [DARKOUT] to [ON] by using the [
▲] and
[
▼] buttons.
Set to [OFF] when you are not using this
function.
DARK ALARM
3-17
4 Place the cursor on [SETTING RANGE] and
select by pressing the [ENTER] button.
The range setting screen appears.
5
Select the cursor for either the upper or lower
limit by using the [SCREEN] button.
The selected cursor turns to yellow-green.
6
Set the position for the cursor of the upper or
lower limit by using the [t] or [s] button.
7
Press the [ENTER] button.
The dark setting is fixed.
Refer to "Default Values and Setting Range"
(page 2-25) for the setting range and limitations.
The dark status takes priority over any other
status. Refer to "Status Table" (page 9-4) for the
respective display/output statuses.
You can confirm the setting range with the dark
setting display bar while measuring.
You can confirm whether a target is within the
measurement range or not if DARK ALARM is set to
be displayed/output when the target is out of the
range and the light intensity become deficient.
Reference