9.
COMMUNICATIONS
IN
THE
NO-PROTOCOL
MODE
MELSEC-A
Ixample
2:
Transmitting data
In
byte
units (buffer
memory
allocation: default)
I
To
write
"AJ71C24[
]%I?,
LF
by sequence program and transmit
it
to an external device
((AJ71
C24
VO
addresses:
80
to
SF)
Computer
pJ71c24
A
IJ
17
I1
IC
12
14
I1lIII
11II1I
Send
completed
x80
Transmitted data
Send request
Y90
\
/
PC
CPU
TO
(Program) processing
PC CPU
program example
RST
Y90
(5)
Send
data
D3
32H
UH
3H
4H
pJ/-
20H
34H
Sequence program
data memory
AJ71
C24
buffer memory
,
POINT\
Even
if
transmission data units are set byte units, the
TO
instruction
in
a sequence program operates
in
word units. Therefore, the length of
send data differs
from
the data length set with the
TO
instruction.
Ir
L
i
c
c
.
9-
18
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
