Omron NT21 User Manual

3-4SectionDisplay and Control of Windows
314
(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.
Reference: Display status of the window is always written to a window control area during the
operation of the PT.
3-4-3 Disabling/Enabling the Opening of a Window
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
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
that has window move function. Also, opening/closing/moving a window by op-
eration of the window control area is always possible.)
Words must be allocated for the PT status control area in the host. 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.
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 NT20S or
NT30/620 compatible mode.
Bit 7 is not supported by the NT21.
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.
Setting
Operation

Omron NT21 Specifications

General

Brand	Omron
Model	NT21
Category	Touch terminals
Language	English