3.
SPECIFICATIONS
MELSEGA
(3)
The
AJ71 C24
turns
OFF
its
READY
signal
(Xn7).
(4)
The
AJ71 C24
starts switching the mode, executing the following opera-
tions:
0
AJ71 C24
initial processing
0
Returning the data in the special applications area to the default state
(except for the mode switching designation area (address
11
9H)).
0
Clears received data.
0
Mode switching
0
Setting the switched-mode number to the mode setting status
storage area (address
11
8H).
(5)
After completing step
4,
the
AJ71C24
turns
ON
its
READY
signal,
overwriting
02H
to the higher bytes
in
the buffer’s mode switching
designation area.
SwitcM
to
this
mode
number
(designated
in
step
2))
Mode
switching
compke#l
(6)
Write the set data (for communicating data
in
the switched mode
in
accordance
with
the higher bytes (switched to 02H)) to the
AJ71C24
buffer’s special applications area using the sequence program.
However, writing the set data is unnecessary if data can be communi-
cated using
the
default data
in
the special applications area.
(7)
Use the sequence program to read the data
in
the
AJ71C24
buffer’s
mode switching designation area and write OOH to the higher bytes.
119H
-1
Seta
the
higher
bytea
to
OOH
(8)
After switching the mode, communicate data to provide an interlock
between the external device and the
AJ71 C24.
(This operation notifies all connected devices that the special applica-
tions area setting has been completed and that data communications
is enabled
in
the switched mode.)
,.--
_.
L
3-23
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