Omron NT631 Operation Manuals page 259

NT631/NT631C Screen
System Screens
Screens with predetermined functions are called "system screens".
The types of system screens are indicated in the table below.
Screen No. Name
0 No-display screen
9000 "System initializing"
screen
9001 Occurrence history
screen
9002 Frequency history
screen
9020 Programming con-
sole function
screen
9999 "Return to previous
screen" designa-
tion
For details on the display history function, refer to 7-15-1 "Display History Record
Function" (page 435); for details on the programming console function, refer to
6-12 "Programming Console Function" (page 237); and for details on screen
switching refer to 8-3-1 "Switching the Screen" (page 468).
Function
If screen number "0" is designated as the display
screen, the screen of the NT631/NT631C is made
blank.
This screen is displayed during the initial process-
ing when the NT631/NT631C starts operation.
During operation, screen number 9000 cannot be
designated for display, but it is possible to create
and register a screen under screen number 9000 at
the Support Tool, and this screen can then be dis-
played instead of the default system initialization
screen. Note however that only "fixed display" ele-
ments can be registered for screen number 9000.
The NT631/NT631C features the "display history
record function", which records the display status of
screens. By designating screen number 9001 as
the display screen, you can check the screens that
have been displayed up to the present time in dis-
play order.
You can set whether the records are presented in
the order of newest first or oldest first by setting an
NT631/NT631C memory switch.
The NT631/NT631C features the "display history
record function", which records the display status of
screens. By designating screen number 9002 as
the display screen, you can check the screens that
have been displayed up to the present time in order
of frequency of display.
As an expansion function, the NT631/NT631C fea-
tures the "programming console" function, which
allows equivalent functions to those of a program-
ming console. When the NT631/NT631C is con-
nected to a host which supports the programming
console function, it can be used in the place of a
programming console by designating screen num-
ber 9020 as the display screen.
The NT631/NT631C has a function which allows
the screen numbers of up to 32 screens to be re-
corded in their order of display. When screen num-
ber 9999 is designated as the display screen, the
screen that was displayed immediately before the
currently displayed screen is redisplayed. Howev-
er, note that if a system screen is displayed in the
middle of operation, the record of displayed
screens is cleared.
Section 7-1
251