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3-2
Section
Buzzer, Backlight, and Display Control
281
The PT status control area must be allocated to a word in the host and, accord-
ingly, there are no special settings required for the control of buzzer.
The bit for controlling the PT status (PT status control bit) is provided at the fourth
word (n + 3 words) from the beginning of the PT status control area.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bit
0
0
Controlled Item
Screen display
Processing priority registration (for NT link (1:N))
Continuous buzzer
Intermittent buzzer (short)
Display history initialization
Not used
Intermittent buzzer (long)
Backlight mode
Screen printing
PT window opening
Numeral/character string input
PT screen switching
Memory table copy execution
Memory table copy type
Alarm history initialization
Not used
1 (ON)
Performed
Registered
Sounded
Sounded
Performed
Sounded
Lit
Performed
Disabled
Disabled
Disabled
Performed
Numeral
Performed
0 (OFF)
Not performed
Canceled
Stopped
Stopped
Not performed
Stopped
Flashing
Not performed
Enabled
Enabled
Enabled
Not performed
Character string
Not performed
Always 0
Always 0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bits 2 and 3 are not used when the PT is in NT30/620 compatible
mode.
To sound the buzzer during the operation of the PT, operate the PT status control
area as indicated below.
Set 1 (ON) for the following bit in the fourth word (n + 3 words) from the beginning
of the PT status control area according to the required buzzer sound.
•
Continuous sound:
Bit 13
•
Short intermittent sound:
Bit 12
•
Long intermittent sound:
Bit 9
3-2-2 Stopping the Buzzer Sound
With the PT, the following three methods are used for stopping the buzzer sound.
•
Displaying a screen for which the buzzer attribute is not set
•
Operating the PT status control area
•
Pressing a touch switch which has the buzzer stop function
Stopping the Buzzer by Displaying a Screen for Which the Buzzer Attribute Is Not
Set
When this method is used, the buzzer stops sounding automatically when the
screen is switched to the one where the buzzer attribute is not set.
When creating a screen using the Support Tool, cancel the check mark for the
buzzer attribute at the screens where the buzzer should not sound. (Usually, the
buzzer attribute is not checked.)
When the screen for which the buzzer attribute is not checked is displayed dur-
ing operation of the PT, the buzzer automatically stops sounding. For the proce-
dure for switching the screen, refer to
3-3-1 Switching the Screen (page 289).
Setting
Operation
Setting
Operation
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