L
2.
SYSTEM CONFIGURATIONS
MELSEC-A
2)
Functions available when using PC CPUs
Avallablo Functions
Data transmis-
devices
On-demand
sion to external
Protocol
Not.
I
RS-422 RS232C
I
I
I
1
:
Data communications is possible only with the system which has a
1
:
1
configuration (one external device to one PC CPU, as shown in Fig.
2.5)
(b) Interfaces used to set the no-protocol mode
Functions available when using external devices and PC CPUs
I
1
,
1
Note
Avallabk Functions
Intorfaces
for
Ne-protocol
Mode
RS-422 Rf232C
PC CPU to
To
computers,
Send
printers, and
o*l
0
external
devices CRTS.
t
I
Io
I
O*l
I
Receive
to PC CPU
External device From computers
and keyboards
~~ ~~ ~ ~
*
1
:
If full-duplex transmission is possible with the external device, data com-
munications in the no-protocol mode is poasible with the system which has
the
1
:
n configuration (external device-2 to PC CPUs, as shown in Fig.
2.5).
(c) Interface used to set the bidirectional mode
Functions available when using external devices and PC CPUs
Available Functions
1
,
1
Note
Bidiroctlonai
Modo
Interfaoor
for
RS-422
RS-232C
I
Send
PC
CPU to
computer
I
0’1
I
0.1
I
To
computers
I
Receive
Computer to
PC
CPU
I
0.1
1
0’1
1
From computers
1
:
Data communication8
is
possible only with the system which has
a
1
:
1
configuration (external device-1 to one PC CPU, as shown in Fig.
2.5).
2-
15
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
