Table of Contents
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3. SPECIFICATIONS
MELSEC-A
(b) Functions available with the AnACPU dedicated commands
Table
3.4
Functions List When Using
a
Dedicated Protocol
Commands
unction
units
52H
Batch
units
52H
Batch
write
ward
51H.
JT
4AH,
units
54H
levice
nemory Test
(random
WW
Word
QT
51H.
units
54H
units
Monitor
data
regist- w o r d
QM
~ I H ,
ration
. , , i t s
Monitor
Direct Word
4EH
Exten-
1
read
Iunits
I
NR
1
5 2 .
file
register Direct Word
write
units
Exten-
Batch read
sion
, , ,
t
Batch write
Description
3eads bit devices (such as
X, Y. M)
in
,nits of 1 device.
3eads bit devices (such as X.
Y, M)
in
mits of 16 devices.
Zeads word devices (such as D. R, T.
, ) in units of 1 device.
Writes bit devices (such as
X.
Y . M) in
units of 1 device.
Writes bit devices (such as
X, Y.
M) in
units of 16 devices.
Writes word devices (such as D, R, T,
C) in units of 1 device.
Specifies bit devices (such as X, Y, M )
and
device number in units of
1
devlce
at random and setsiresets the device.
Specifies bit devices (such as X,
Y.
M)
and device number in units of 1 6
devices at random and setsiresets the
device.
Spec
f
es woro devices (sucn as D R
T. C)
ana
dcwce number in Jnlts
of
1
dcvlce at random an0 scts/rescfs lne
device.
Sets bit devices to be monitored (such
as
X,
Y,
M) in
units
of
1
device.
Sets bit devices to be monitored (such
as
X.
Y, M) in units of 16 devices.
Sets word devices to be monitored
(such as D, R, T. C) in units of 1 device.
m a d s data from devices for which
device data has been registered.
Reads data in units of 1 device by
designating the device numbers
continuously regardless of the exten-
sion file register block numbers.
Writes data in units of 1 device by desig
nating the device numbers continuously
regardless of the extension file register
block numbers.
Reads the extension comment data.
Writes the extension comment data.
Number of
PC
CPU
State
Refer-
During
per
--
STOP S I
nunkaiiom
:56 points
1
0 words
160 points)
! O points
1
I0 words
160 points)
0
10 paints
$0 points
1
1 0
points
I
54 points
64
t
points
128 bytes
L
The commands given in Table 3.4 can be used when the AlSJ71C24 is
used together with the A2ACPU(Sl) or A3ACPU. The whole range of
device memory is accessible using these commands.
For functions other than those listed in Table 3.4, use the commands given
in Table 3.3.
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