Mitsubishi MELSEC F FX-40DU-E Handy Manual page 42

4.
USER SCREEN MODE
Guide to Screen Objects
Number of LAMP (EXT) objects
Number of objects that can be set: 32 per screen
...
However, note that if there are any LAMP
objects (described on the previous pages), they will be included in this total.
Example Application
Using two LAMP (EXT) objects
(a) External output 0 0 comes ON when programmable controller auxiliary relay M O is switched ON.
(b) External output 0 1 comes ON when programmable controller auxiliary relay M I is switched ON.
For details on the wiring of external outputs, see section 2.3, page 13
Object 1 Object 2
LAMP (EXT) objects : Bit device MO M 1
(example of designation
in the EDIT mode)
: output 0 0 0 1
:
Logic Normally open contact Normally closed contact
Sequence program
External outputs 00 and External output 0 1
0 1 are switched ON and
OFF in accordance with
External output 0 1
the ONIOFF status o f M O
@ O N andM1.
FX-40DU-E
M1 OFF
Note: 1. LAMP (EXT) control is effective only while the screen for which the LAMP (EXT)
object was registered is displayed.
Accordingly, if the screen is changed while an external output is ON, this status
will not be changed while the new screen is displayed, even if the ON/OFF status
of the corresponding programmable controller bit device changes.
To enable control after a screen change, the same
LAMP
(EXT) object has to be
registered on the new screen.
2. The output capacity of each external output point is very small
-
only 20 mA
-
and
it is therefore necessary to use relays if driving devices that require larger
currents, or AC loads.
(7) LINE
Used to display lines on the screen.
Display format
Unbroken line
Examples
Polygons, etc. other than squares and rectangles, are formed by using these lines.
Size
Up to 240 dots x 128 dots (the entire screen). Lines projecting outside the screen area cannot
be specified.