Omron NT631 Series Reference Manual page 88

Memory Tables
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display switches to the screen set for the bit memory table (this screen remains
displayed even if the bit returns to 0 (OFF)).
S The screen display can also be switched by PT status control area operation
Reference:
(page 289), touch switch operation (page 290), and by using the alarm list/his-
tory function (page 292).
S To display an overlapping screen, designate the screen number of the parent
screen.
S If there are no registered elements for the designated screen number, the
screen does not switch.
Alarm List/History Function
When using the alarm list/history function, the following properties must be set in
addition to the common attributes.
Property Property
History
Switch
Screen Screen
Screen
No.
String
Table Table
Entry
Image/
Library
Code
Fore-
ground ground
Color
If the alarm list and alarm history functions are registered for a screen, mes-
sages and image/library data are displayed in accordance with the status of the
bit memory table (refer to Common Attributes on page 77).
Possible Settings
Check mark (record)/No check mark (do not record)
Determines whether or not an alarm history is recorded
When a check mark is set, a record is logged in the alarm history when
the status of the allocated bit of the bit memory table changes to 1
(ON).
Check mark (screen switched)/No check mark (screen not switched)
Determines whether or not the screen changeover function is used
When a check mark is set, pressing the message (which is displayed
when the status of the bit allocated to the bit memory table changes to
1 (ON)) twice switches the display to the designated screen.
0001 to 3999: Screen numbers 1 to 3999
9001: Occurrence history screen
9002: Frequency history screen
9020: Screen for Programming Console function (expansion function)
9021 to 9023: Screens for Device Monitor function (expansion function)
9030: Brightness and contrast adjustment screen
9999: Return to previous screen designation
Number of screen displayed when the message (which is displayed
when the status of the allocated bit of the bit memory table changes to
1 (ON)) is pressed twice.
0 to 1999 (within the character string memory table range)
Number of the character string memory table whose contents are dis-
played as a message in the alarm list/history when the status of the
allocated bit of the bit memory table changes to 1 (ON).
000 : No display (No check mark)
H
0001 to 0FFF : Image data
H
1000 to 3FFF : Library data
H
Code (expressed as 4 hexadecimal digits) of the image/library data cor-
responding to the message displayed when the status of the allocated
bit of the bit memory table changes to 1 (ON).
Black/Blue/Red/Magenta/Green/Cyan/Yellow/White
Color of message text (only white or black for the NT31 and NT631)
Section
Meaning
2-3
79