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8. COMMUNICATIONS USING DEDICATED PROTOCOLS
MELSEC-A
(2)
The AnACPU dedicated commands and device ranges used for device
memory readlwrite are described below.
(a) AnACPU dedicated
commands
Number of
Points
Processing Contents
Processed per
Communi-
cations
Command
PC CPU Status
-
ccess
' C CPI
in Dat
Link
-
0
-
0
-
0
-
0
-
0
-
0
-
0
-
0
-
0
-
-
luring
STOP
-
0
-
0
-
0
-
0
-
0
-
ASCII
Code
iUN
-
jW04
OFF
-
0
-
X
-
X
-
0
-
0
-
Bit
Units
-
vV0rd
units
-
Bit
units
-
Nord
units
-
Bit
units
-
Nord
Units
-
Bit
units
-
Nord
>nits
-
Bit
Inits
-
Word
>nits
-
Reads bit devices (X,
Y .
M,
etc.) in units of points.
256 points
Reads bit devices
(X,
Y, M,
32 words
etc.) in units of 16 points.
(51 2 points)
Reads word devices (D, R, T .
64 points
C, etc.) in units of points.
Writes data to bit devices (X,
points
Y .
M, etc.) in units of points.
Writes data to bit devices (X,
words
Y . M, etc.) in units of 16
points.
(160 points)
Writes data to word devices
(D. R, T. C, etc.) in units of
64 points
points.
Setslresets bit devices (X, Y,
M, etc.) in units of points by
designating the devices and
20 points
device numbers at random.
Setslresets bit devices (X, Y,
M, etc.) in units of 16 paints
by designating the devices
10 words
and device numbers at
ran-
( l 60 Points)
Batch
Read
3atch
Nrite
rest
Random
Nrite)
points by designating the
10 points
devices and device numbers
Sets the bit devices (X, Y, M,
40 points
vlonitor
lata
3egis-
ration
Sets the word devices
(D,
R,
Aonitor
Monitors the devices
registered for
monitoring.
........
Note
: o
Executable
x
.........
Not executable
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