Mitsubishi MELSEC F FX-40DU-E Handy Manual page 50

4.
USER SCREEN MODE
Changing Displayed Screens
(2)
Registering screen change objects
The [CHANGE SCREEN] object described on the previous page differs from most of the other 13
objects (see page 28 for all 14 objects) in that it can be registered not only for individual screens but
for all screens as a "common setting".
The ability to register a common change for all screens when the change conditions and change
destination are the same removes the need to register separately for individual screens and reduces
the number of objects used.
The maximum number of obiects that can be registered is
10
in the case of common screen
registrations and 30 in the case of individual screen-registrations.
Change conditions
. . . . . . . . . . . . . . . .
Common screen changes
Chanueconditions
Maximum of 10
'
l \ l
Individual
screens
screen change
Changeconditions
.
Screen specification Screen Non
.
MEMORY
screenchanue
-
~
Maximum of 30 Changeconditions
Screenspecification
:
Selector
:
:
switch
I
: .
:
coniroiler
.........
. . . . . . . . . . . . . . . . . . . . . . .
ScreenNo.255
:
Operation keys
screenchange
:
. . . . . . . . . . . . . . . . . . . . . . .
~han~ecbnditions
Screen specification
MEMORY
Maximum of 30
MEMORY
Maximom of 30
(3)
Screen change operation timing
In the FX-40DU-E, processing of [CHANGE SCREEN] objects proceeds from common screen
changes to reference screen changes and within these categories the objects are processed in
the order in which they were registered.
[Common screen changes] [Internal processing] [CHANGE SCREEN]
[CHANGE SCREEN] objects 2 1
I
Objects processed in the
order of registration
10
[Reference screen changes]
[CHANGE SCREEN] objects
1
1
to
1
As above
S ~ p p o s
ng
tnat in nterna
proccss ng a reference screen
screcn chanac
cond.tmns
are
~-~~
~~~~
met first at oaint A. then condi-
I
ans for a common sercen
change arc mot at point B tne
common screen chanae at B s
given priority and the &splay
changes to the specified screen,
When the screen change is ex-
ecuted the individual screen
[SCREEN CHANG object
change to ISCREEzCiANGn
obje& for-the new screen and.
internal processing is pelformed.
(Note)
Since screen changes are executed with a priority ranking, objects registered later than
others with identical screen change conditions will be ignored.
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