Omron Programmable Terminals NT631, Operation Manuals

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293
Memory Tables
Section 7-3
Reference - The screen display can also be switched by PT status control area operation
(page 468), touch switch operation (page 469), and by using the alarm list/histo-
ry function (page 472).
- To display an overlapping screen, designate the screen number of the parent
screen.
- If there are no registered elements for the designated screen number, the screen
does not switch.
S
Alarm list/history function
When using the alarm list/history function, the following properties must be set in
addition to the common attributes.
Possible Settings
Property
Meaning
History 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).
Switch
Check mark (screen switched)/No check mark (screen not switched)
Screen
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.
Screen
No.
0001 to 3999: Screen numbers 1 to 3999
9001: Occurrence history screen
9002: Frequency history screen
9020: Screen for programming console function (expansion function)
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.
String 0 to 1999 (within the character string memory table range)
Table
Entry
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 allo-
cated bit of the bit memory table changes to “1” (ON).
Image/
Library
Code 000
H
: No display (No check mark)
0001 to 0FFF
H
: Image data
1000 to 3FFF
H
: Library data
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).
Fore-
Black/Blue/Red/Magenta/Green/Cyan/Yellow/White
ground
Color
Color of message text (white and black for NT631)
- 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”, page 291).