P
8.
COMMUNICATIONS USING DEDICATED
PROTOCOLS
MELSEC-A
Ducrlptlon
To read data
trom the PC
CPU
to
the
computer
To write data
from the
the PC CPU
computer to
Remarks
St
No.
:
st.tion
number
Contrd
Prolocd
Rl
HLH L
or
UlQ4
or
Wl
HLHLHL
or
~LHLHL
(1)
The sum check
is
enabled by DIP switch
21.
The sum check code only exids when the sum chock
is
enabled by turning DIP switch
21
ON.
@The sum check is made for characten marked in these diagrams.
(3)
In
those diagrams, the contents
of
'charactor
arm
A",
"character
ama
B",
and "character area C"
depend on tho individual sydorn.
For
dotails,
8.0
the relevant sections. The contents
of
all
character are- are the same
for
aU
4
formats.
0-7
.-.
.
-
__
..
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