2.
SYSTEM
CONFIGURATIONS
MELSEC-A
2)
Functions available when using a PC CPU
Intertacos for DodIca1.d
Protocol
RS-422
RS-232C
Available Functions
Note
Data tranrmis-
devicer
On-demand
-
0
0
rion
to
external
(b) Interfaces used to set the no-protocol mode
Functions available when using external devices and
a
PC CPU
Interfaces for
No-protocol
Mode
Availablo Functions
Not.
I
RS-422
RS-232C
I
I
I
Send
PC CPU to
external device
To computers,
printers, and
1
I
I
CRTr.
I
Io
Io
Receive
to
PC CPU
External device
From computers
and keyboards
(c) Interfaces used to set the bidirectional mode
Functions available when using external devices and a PC CPU
b
Intortacos for
Bldlroclio~l
Modo
RS-422
RS-232C
Avalirble Funcllons
N
ole
I
I
Send
PC CPU to
computer
Io
To computer8
Receive
Computer to
PC CPU
I
o
1
o
I
From computers
I
I
I
I
e
i
J
,/--
'-
-
1
d
2-
12
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