Table of Contents
Advertisement
2. SYSTEM CONFIGURATIONS
MELSEC-A
2) Functions available when using a PC CPU
lnterfaces f o r Dedicated
Available Functions
RS-422
RS-232C
1
Data transmis-
I
I
1
I
On-demand
smn
to external
I
I
I
-
devices
I
I
(b) lnterfaces used to set the no-protocol mode
Functions available when using an external device and a PC CPU
I
lnterfaces f o r Dedicated
Available Functions
Protocol
1
, 1
Note
RS-422
RS-232C
*
1 :
If the external device is capable of performing full-duplex transmission,
data communications in the no-protocol mode can
be
performed.
Send
I
I
I
I
(c) lnterfaces used to set the bidirectional mode
o
PC CPU to
external device
Functions available when using an external device and a PC CPU.
o * l
0'1
0
Receive
Send
PC CPU to
x
x
To computers
computer
To computers,
printers, and
CRTs.
From computers
and keyboards
External device
to PC CPU
I
Receive
Computer to
PC CPU
I
I
From computers
Note
Available Functions
lnterfaces for Dedicated
Protocol
RS-422
RS-232C
Advertisement
Table of Contents
