Omron NT31 Operation Manuals page 485

Buzzer, Backlight, and Display Control
Controlling the Backlight Status by the Operation at the PT Status Control Area
[Setting]
[Operation]
15 14 13 12 11 10 9
0
474
Using this method, the backlight status (lit/flashing) can be controlled at any re-
quired time.
Backlight is flashing
The PT status control area must be allocated to a word in the host, accordingly, no
special settings are 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.
8 7 6 5 4 3 2
To control the backlight status during the operation of the NT31/NT31C, operate
the PT status control area as indicated below.
(1) Set "0" (OFF) or "1" (ON) for bit 8 in the fourth word (n + 3 words) from the
beginning of the PT status control area.
Word n + 3, bit 8
- To turn the backlight on: 0 (OFF) → 1 (ON)
- To flash the backlight:
NT31/NT31C
1 0 Bit
0
Controlled Item
15 Screen display
14 Processing priority registration (for NT link (1:N))
13 Continuous buzzer
12 Intermittent buzzer (short)
Display history initialization
11
Not used
10
Intermittent buzzer (long)
9
Backlight mode
8
7 Screen printing
6 PT window opening
Numeral/character string input
5
PT screen switching
4
Memory table copy execution
3
Memory table copy type
2
Alarm history initialization
1
Not used
0
1 (ON) → 0 (OFF)
Section 8-2
PC
PT status control area
Screen switch setting
Copy memory
table setting
← Control data
PT status control setting
Reserved for system use
1 (ON)
Performed
Registered
Sounded
Sounded
Performed
Always "0"
Sounded
Lit
Performed
Disabled
Disabled
Disabled
Performed
Numeral
Performed
Always "0"
0 (OFF)
Not performed
Canceled
Stopped
Stopped
Not performed
Stopped
Flashing
Not performed
Enabled
Enabled
Enabled
Not performed
Character string
Not performed