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2. SYSTEM CONFIGURATIONS
MELSEC-A
2)
Functions available when using a PC CPU
Available Functions
(b) lnterfaces used to set the no-protocol mode (Mode: for stations set
On-demand
. .
t o 5, 6, or 8)
Functions available when using external devices and the PC CPU
I
lnterfaces tor Dedicated
Available Functions
Protocol
1
,
1
Note
RS-422
RS-232C
Note
Interfaces for Dedicated
Protocol
Data transmis-
sion to external
devices
I
Send
RS-422
PC CPU to
To coinputers.
printers, and
devices
CRTs.
RS-232C
x
(c) lnterfaces used to set the bidirectional mode (Mode: for stations set
to
5, 6,
or
8)
x
Receive
Functions available when using external devices and the PC CPU
-
I
lnterfaces for Dedicated
Available Functions
Protocol
1
,
1
Note
RS-422
RS-232C
External
devices to PC
CPU
I
Computer to
Receive
PC CPU
I
-
From computers
I
-
I
I
I
I
I
I
I
I
I
*
1
: Data communications is possible only with the
1 : 1
ratio configuration.
o
Send
From computers
and keyboards
computer
I
-
PC CPU to
0'
1
To computers
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