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8.
COMMUNICATIONS USING DEDICATED PROTOCOLS
MELSEC-A
12)
The AnACPU dedicated commands and device ranaes used for device
\ ,
-
memory readlwrite are described below.
(a) AnACPU dedicated commands
Command
Number o f
Points
processed
p e r Com-
munications
PC CPU s t a t u s
ASCII
Code
Processing Contents
luring
Batch Read
units
units
Batch Write
Word
units
Reads bit devices (X.
Y .
M, etc.) in units of
256 points
points.
Reads bit devices
(X,
Y . M, etc.) in units of
32
words
16 points.
(512 points)
Reads word devices (D, R, T, C, etc.) in
64 points
units of points.
Writes data to bit devices (X. Y. M. etc.) in
160 points
units of points.
Writes data to bit devices (X, Y. M, etc.) in
10 words
units of 16 points.
(160 points)
Writes data to word devices (D, R. T,
C,
etc.) in units of points.
1
64 points
units
Test
(Random
Write)
Units
Setslresets bit devices
D(.
Y, M, etc) in
units of points by designating the devices
20 points
and device numbers at random.
Setslresets bit devices (X, Y . M, etc.) in
10 words
units of 16 points by designating the
(160 points)
devices and device numbers at random.
Writes data to word devices (D, R, T. C,
etc.) in units of points
by
designating the
10 points
devices and device numbers at random.
Monitor
Sets the bit devices (X, Y, M, etc.) to be
monitored in units of points.
40 points
Sets the bit devices (X. Y, M, etc.) to be
20 words
monitored in units of 16 ~oints.
Data
Registration
Wort
units
,
,
Sets the word devices (D, R,
T. C,
etc.) to
20 points
be monitored in units of points.
Monitor
units
Monitors the devices registered for
monitoring.
I
Note : o
.......
x
.........
Not executable
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