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3-2
Section
Buzzer, Backlight, and Display Control
283
Stopping the Buzzer by Pressing a Touch Switch Which Has the Buzzer Stop
Function
Using this method, an operator can stop the buzzer by the operation at the PT.
Usually, a buzzer stop touch switch is registered to a screen for which the buzzer
attribute is set to sound the buzzer.
Reference:
The touch switch operation will be disabled when the touch switch interlock func-
tion is being used and the host’s interlock bit that controls the touch switch’s op-
eration is OFF. (See
Disabling Touch Switches with Interlock Bits on page 357 for
details.)
There is an input key – control touch switch that has the buzzer stop (
) func-
tion.
Register this touch switch on the screen when creating it using the Support Tool.
Press the touch switch with the buzzer stop function to stop the buzzer.
3-2-3 Controlling the Backlight
The NT31/NT31C and NT631C provide the following two backlight modes.
•
Light:
The backlight is lit continuously.
•
Flash: The backlight alternates between lit and unlit states.
With the NT31/NT31C and NT631C, the following two methods are used for con-
trolling the backlight mode.
•
Displaying a screen for which the backlight attribute is set
•
Operating the PT status control area
Reference:
S
If the screen saver function is set to Display erased, the backlight is turned off
with the screen, which is turned off by the screen saver function if the PT not
operated for a while, or by operation at the PT status control area. Even when
the backlight has gone off, it may light or flash according to the setting if the
backlight mode is changed by operation at the PT status control area.
S
This setting is ineffective in the NT631.
Controlling the Backlight Status by Displaying a Screen for Which the Backlight
Attribute Is Set
By using this method, it is possible to control the backlight automatically when a
specific screen is displayed.
Set either of the following statuses for the backlight screen attribute of the screen
for which the backlight is to be controlled when creating it using the Support Tool.
(The default setting is Light.)
•
Light
•
Flash
When the screen is changed over during the operation of the PT, the status of the
backlight is controlled according to the setting for the backlight attribute of the
newly called screen.
Setting
Operation
Setting
Operation
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Summary of Contents for NT21 Series
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