Omron NT31 Operation Manuals page 499

Screen Display and Notification
[Operation]
Reference: The screen switching strobe automatically returns to "0" (OFF) when the occur-
488
Follow the procedure indicated below to check the screen switching executed by
operation at the NT31/NT31C.
S Reading screen switching timing
The bit for notifying the PT status (PT status notify bit) is provided at the second
word (word m + 1) from the beginning of the PT status notify area.
15 14 13 12 11 10 9
0 0
(1) Make a program which runs in the host so that leading edge of bit 12 (screen
switching strobe) in the second word (word m + 1) from the beginning of the
PT status notify area is checked.
If this bit changes to "1" (ON), it indicates that the screen has been switched
by operation at the NT31/NT31C.
rence of the event is notified to the host.
S Notifying the screen number
The area for the screen switch command and notification of the screen number
is provided at the beginning (word n) of the PT status notify area.
15 14 13 12 11 10 9
Word
n
n + 1
n + 2
n + 3
n + 4
(1) Read out the beginning (word n) of the PT status control area with the pro-
gram in the host.
The screen number of the screen displayed at the NT31/NT31C is stored in
a 4-digit BCD or a 4-digit hexadecimal. Whether BCD or hexadecimal nota-
tion is to be used is set for "Numeral Storage Type" of "PT Configuration" at
the Support Tool.
8 7 6 5 4 3 2
0 0
8 7
Screen No. (4-digit BCD or hexadecimal)
Copy source memory table No.
(4-digit BCD or hexadecimal)
Copy destination memory table No.
(4-digit BCD or hexadecimal)
PT status control bits
Reserved for system use
1 0 Bit
0 0
Notified Information
15 PT operation status
13 Battery status
12 Screen switch strobe
11 Numeral setting strobe flag
Character string setting strobe flag
10
Printer operating status
7
Backlight status
6
Global window open status
5
4 Local window1 open status
3 Local window2 open status
6 5 4 3 2 1 0
Section 8-3
0 (OFF)
1 (ON)
Stop
Run
Normal
Low
Printing Stopped
Off Lit/Flashing
Closed
Open
Closed
Open
Closed
Open
Bit
Screen switch setting
Copy memory table
setting
PT status control