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Buzzer, Backlight, and Display Control
Section 8-2
8-2 Buzzer, Backlight, and Display Control
The procedure for controlling the PT status including sounding the buzzer, back-
light ON/OFF status, and turning ON/OFF the screen display is described below.
8-2-1 Sounding the Buzzer
The NT31/NT31C provides the following three types of buzzer sounds.
- Continuous sound
The buzzer sounds continuously.
- Short intermittent sound
The buzzer sounds intermittently at 0.5 second intervals.
- Long intermittent sound
The buzzer sounds intermittently at 1 second intervals.
With the NT31/NT31C, the following two methods are used for sounding the buzz-
er.
- Displaying a screen for which the buzzer attribute is set
- Using a PT status control area operation
Reference: Whether or not the buzzer actually sounds depends on the setting of the memory
switch in the NT31/NT31C. The memory switch has the following three setting
positions.
- OFF: The buzzer never sounds.
- ERR ON: The buzzer only sounds when an NT31/NT31C error occurs.
- ON: The buzzer sounds in response to instructions from the host and
screen attributes and when an error occurs.
To control the buzzer, set the memory switch at “ON”. For details, refer to 7-15-5
“Buzzer Function” (page 454).
Sounding the Buzzer by Displaying a Screen for Which the Buzzer Attribute Is Set
If this method is used, the buzzer sounds automatically when a specific screen is
displayed.
[Setting]
When creating a screen using the Support Tool, set any of the following buzzer
attributes for the screen. Nothing is set in the default setting.
- Continuous
- Short beep
- Long beep
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