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9.
COMMUNICATIONS IN THE NO-PROTOCOL MODE
MELSEC-A
(3)
Data transmission program examples
ixample 1
:
Transmitting data in word units (buffer memory allocation: default)
I
To write "AJ71
C24[]"CR,
LF by sequence program and transmit it to an external device
(AJ71
C24
I10
addresses: 80 to 9F)
AJ71 C24
I
I
I
Send completed
X80
Transmitted data
Send
request
Y90
length
PC CPU
(Program)
xo
x80
Y90
PC CPU program
D5
5H
Send data (3
Sequence program
AJ71 C24
data memory
buffer memory
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