Omron NT31C Reference Manual page 316

Display and Control of Windows
Reference: Display status of the window is always written to a window control area during the
3-4-3 Disabling/Enabling the Opening of a Window
Controlling the Window by Operation at the PT Status Control Area
Setting
Operation
15 14 13 12 11 10 9 8
0
(such as system menu or error screen) is displayed, the window is automatically
closed, but the window screen number retains the existing value.
The value in a window control area is effective only when the window is dis-
played.
operation of the PT.
Opening of a window by operation at the PT can be enabled/disabled by using
the method indicated below.
Controlling the window by operation at the PT status control area
This method allows the opening of a window by operation at the PT to be dis-
abled. (Even if the opening of a window is disabled, it is possible to close the
window by operation at the PT, or to move a window by a touch switch operation
which has window move function. Also, opening/closing/moving a window by
operation of the window control area is always possible.)
The PT status control area must be allocated to a word in the host, accordingly,
no special settings are required for the control of a window.
The bit for controlling the PT status (PT status control bit) is provided at the fourth
word (word n + 3) from the beginning of the PT status control area.
7 6 5 4 3 2 1 0
0
To disable the opening of a window by operation at the PT during the operation of
the PT, operate the PT status control area as indicated below.
Set 1 (ON) for bit 6 in the fourth word (word n + 3) from the beginning of the PT
status control area.
Bit
Controlled Item
15 Screen display
14 Processing priority registration (for NT link (1:N))
13 Continuous buzzer
12 Intermittent buzzer (short)
11 Display history initialization
10 Not used
9 Intermittent buzzer (long)
8 Backlight mode
7 Screen printing
6 PT window opening
5 Numeral/character string input
4 PT screen switching
3 Memory table copy execution
2 Memory table copy type
1 Alarm history initialization
0 Not used
Bits 2 and 3 are not used when the PT is in NT30/620
compatible mode.
Section 3-4
1 (ON) 0 (OFF)
Performed Not performed
Registered Canceled
Sounded Stopped
Sounded Stopped
Performed Not performed
Always 0
Sounded Stopped
Lit Flashing
Performed Not performed
Disabled Enabled
Disabled Enabled
Disabled Enabled
Performed Not performed
Numeral Character string
Performed Not performed
Always 0
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