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3-2
Section
Buzzer, Backlight, and Display Control
286
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 turn off the screen during operation of the PT, operate the PT status control
area as indicated below.
Set 0 (OFF) for bit 15 in the fourth word (n + 3 words) from the beginning of the PT
status control area.
3-2-5 Redisplaying the Turned-off Screen
The following operations redisplay the screen which has been turned off by the
screen saver function or due to the operation at the PT status control area.
•
Switching the displayed screen (the new screen is displayed normally)
•
Operation at the PT status control area (the previously displayed screen is re-
displayed)
•
Pressing the touch panel (the previously displayed screen is redisplayed)
Redisplaying the Screen by Switching the Displayed Screen
If this method is used, no special operation is necessary to redisplay the screen.
The screen is redisplayed automatically.
No special setting is necessary.
Switching the screen during operation of the PT cancels the screen off status
and displays the new screen. For the procedure for switching the screen, refer to
3-3-1 Switching the Screen (page 289).
Operation
Setting
Operation
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Summary of Contents for NT21 Series
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