Table of Contents
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3. SPECIFICATIONS
MELSEC-A
(1)
Functions available with the ACPU common commands
Table
3.3
Functions List When Usina a Dedicated Protocol
Command
Number of Point
Processed per
Communications
I
-
Function
-
Device
memory
-
Exten-
sion file
register
I
I
Reads bit devices (such as X.
Y,
M) in units of 1
256 points
device.
Bit
units
Batch
read
Word
Units
-
Bit
Units
-
Word
units
Reads bit devices (such as
X, Y.
M) in units of 16
32 words
devices.
(512 points)
Reads word devices (such as
D,
R, T, C) in units
64 points
of 1 device.
Writes bit devices (such as
X, Y,
M) in units of 1
160 points
device.
I
Batch
write
Writes bit devices (such as
X, Y.
M) in units of 16
10 words
devices.
(1 60 points )
Writes word devices (such as D, R, T, C) in units
of 1 device.
64 points
Bit
Units
Specifies bit devices (such as X. Y. M) and
device number in units of 1 device at random
20 points
and setslresets the device.
and setslresets the device.
Test
(random
write)
Word
units
-
Bit
units
-
Word
units
-
Bit
units
-
Word
units
-
Specifies word devices (such as
D.
R,
T. C)
and
device number in units of ldevice at random and
10 points
setslresets the device.
1
Sets bit devices to be monitored (such as
X, Y,
M) in units of 1 device.
40 points *1
1
Sets bit devices to be monitored (such as X. Y,
20 words
' 1
M) in units of 16 devices.
(320 points
)
Monitor
data
entry
Sets word devices to be monitored (such
as
D. R.
20 points
T, C) in units of 1 device.
Reads data from devices for which device data
registration has been made.
I
-
Monitor
-
I
Reads extension file registers (R) in units of 1
reaister.
64 points
Batch read
-
I
Writes extension file registers (R) in units of 1
register.
64 points
Batch write
Test
(random write)
Monitor data
registration
Specifies the extension file registers (R) in units
of 1 register using block or device number and
10 points
makes a random write.
Sets the extension file registers
(R)
device num-
bers to be monitored in units of 1 re~ister.
20
points
Monitors the extension file register after monitor
-
data registration.
Monitor
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