APPENDICES
MELSECIA
23
Function Comparison
Data
communioationr
Dedicated
to 4
using AnACPU
dedicated
protocols
1
commands with
the A2ACPU(-S1)
and A3ACPU.
Data
communications
Bidirectional
~~~~t~r'h
RS-422)
(RS-232C or
Mode switching
Transmission control
Data communications control in the
half-duplex transmission (RS-232C)
'm
:
n* multidrop link
-
eRS232C intorface
Tranrmirsion is
controlled by the
DTRIDSR control.
eRS-422 interface
Control
it
not
available.
Asll
C24-0
Using the AnACPU dedicated
commands, data communications is
posrible
with
all device memories,
extension file registers, and extension
comments of the A2AJA3ACPU.
Data communications with a computer
in
the bidirectional mode is possible.
configuration)
(Porrible in
a
1-to-1 bare system
The modes used with the RS-422 and
after the AJ71C2448 is started up.
RS-232C interfaces can be switched
Dedicated
protoed
bprotOCd
-
Bidirectional
eRS-232C interface
Tranrmirsion control by the DTWDSR
control
or
the DC code control is
enabled.
Tranrmirsion control
by
the
DC
code
control is enabled.
eRS-422 interface
device supporting the
half-duplex
Data communications with
an
external
transmission function can be
controlled according to the setting by
the
user.
Data communications in the multidrop
link in which the ratio of computers to
PC CPUs
is
'm
:
n' is possible.
SWliOn
see
3.3.1 (2)
8
7.5
10
3.4
7.6.2
3.5
7.7
5
6
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c
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-
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