10.
COMMUNICATIONS
IN
THE
BlDlRECTlONAL MODE
_,,...,
_,
.
MELSEC-A
10.6
Processing an
AJ71C24
for
Simultaneous Send
In
Full-Duplex Mode
r
Processing
by
the
AJ71C24
varies depending
on
the setting (valid/invalid
setting
at
simultaneous transmission) when the computer and the
AJ71
C24
transmit data at
the
same time to each other.
Example:
i-
t-
Butkr
Mmory
Setting
(Addro8sll4H)
Procosslng
by
AJ71 C24
Sonlng
Butkr
Mmory
Setting
(Addro8sll4H)
OOOOH
01
OOH
WOl
H
01 01
H
Rocolvo
Procuslng
L
Aftsr
c~mpldng
dota
md
((1)-
l),
the AJ71C24 wait8 for
moponso
((11-2) whib checking
Send data
:
Valid
Received data
:
Valid
timaout
e&&.
~or.bnormcrlwndcom
OOOOH
r
L
After completing data receive
(CZ)-l),thorJ7lQ4tnnrmitsthe
The
receive dab and receive
rm
(c46.
rwutuetnn.mitbdtothsra
quenco
program
via
the
buffer
m.
Ah
o~mpletirtg
ddr
SO&
((1)-
l),th.AJ7lC24tMlmbUte~
quence program
of
I
dmubnooua truwnirrion
error
(error code:
3)
via the
buffer
lheh.l7lC24~notwnitfora
-w*
r-ponw
(W6.
Send data
:
Invalid
Received data
:
Valid
01
OOH
r
i
Aftw
oompbling
data
csnd
((1)-
l), the AJ71C24 waits for a
msponae
((1)-2) whib checking
timaout
error.
NormcllorrkKKmdmdcom
pletion is confirmed
by
a
rwportsoandibeWuahtrans-
mM
to
the
sequence program
vi.
the
buffer
memory.
Afb
c~mpbtirtg
d.ta
wnd
((1)-
l),thoArJ71C24tnnrmu8¶he~
quence program of a
aimultarww
transmission
error
(error code:
3)
via the
buffer
mew.
The
An1 C24 dm not
wait
for a
r-Pon-
((114.
Send data
:
Valid
Received data
:
Invalid
WOl
H
r
i
.-
P
c-
01 01
H
Send data
:
Invalid
Received data
:
Invalid
P
L.
/--
c
10-
17
r
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