7.
INITIAL SETTING
OF
TRANSMISSION CONTROL DATA TO
BUFFER
MEMORY
MELSEC-A
7.4.3
Setting
a
word
or
byte
unit
In
ttw
~ptotocol mode
This section shows how to set the word or byte
unit
for data communications
and gives an example.
iettlng Method
I
b15 to bl
bo
Buffer memory address 103H (Default
0:
word unit)
write
1.
0:
word unit
1:
bybunit
POINTS
I
(1) The word or byte unit set here only applies to comunications data in
the
no-protocoVbidirectiona1
mode and on-demand data using a
dedicated protocol.
(2) Set bits bl to b15 of address 103H to either
0
or 1. (The AJ71 C24
will
ignore the settings.)
I
ixample
1
To set the byte unit (AJ71C24
I/O
addresses
80
to
9F)
(Sequence Program)
t-(
TOP
I
H8
I
H103
1
Kl
I
K1
Writ.
'1' (byte unit) to
buffer
memory
address 103H.
d
-,
1
Y
7-11
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