Справочник Пользователя для Mitsubishi Electronics AJ61QBT11
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3 SPECIFICATION
MELSEC-QnA
3.5 Buffer Memory
The buffer memory is used to swap data between the master/local module and the
programmable controller CPU.
In the programmable controller CPU, the FROM/TO instructions are used to read/write
data.
The contents of the buffer memory return to the default values when the power is
turned off and the programmable controller CPU is reset.
programmable controller CPU.
In the programmable controller CPU, the FROM/TO instructions are used to read/write
data.
The contents of the buffer memory return to the default values when the power is
turned off and the programmable controller CPU is reset.
3.5.1 Buffer memory list
The buffer memory list is shown in Table 3.4.
When using a master/local module as a standby master station, refer to the respective
columns under "Availability" in the table as explained below.
x
When using a master/local module as a standby master station, refer to the respective
columns under "Availability" in the table as explained below.
x
When a standby master station is operating as a master station: "Master station"
column
x
When a standby master station is operating as a standby master station: "Local
station" column
Table 3.4 Buffer memory list (1/2)
Address
Availability
Hex. Dec.
Item Details
Read/write
possibility
Master station
Local
station
Reference
0
H
to
5F
H
0 to 95
Parameter information
area
area
Stores the information (parameters)
to execute the data link.
to execute the data link.
Read/write
enabled
enabled
(Not available when a
standby master station is
controlling the system)
Section
3.5.2 (1)
3.5.2 (1)
60
H
to
7F
H
96 to
127
(Prohibited to use) –
–
–
–
–
80
H
to
CD
H
128 to
205
Parameter information
area
area
Stores the information (parameters)
to execute the data link.
to execute the data link.
Read/write
enabled
enabled
(Not available when a
standby master station is
controlling the system)
Section
15.2.1
15.2.1
CE
H
to
DF
H
206 to
223
(Prohibited to use) –
–
–
–
–
When master station: Stores the
input status from the remote/local
station.
input status from the remote/local
station.
–
E0
H
to
15F
H
224 to
351
Remote input (RX)
When local station: stores the input
status from the master station.
status from the master station.
Read only
–
When master station: Stores the
output status of the output to the
remote/local station.
output status of the output to the
remote/local station.
Write only
–
160
H
to
1DF
H
352 to
479
Remote output (RY)
When local station: Stores the output
status of the output to the master
station.
status of the output to the master
station.
Read/write
enabled
enabled
–
Section
3.5.2 (2)
3.5.2 (2)
When master station: Stores the
transmission data to the remote/all
local stations.
transmission data to the remote/all
local stations.
Write only
–
1E0
H
to
2DF
H
480 to
735
Remote register (RWw)
(Master station:
for sending
Local station:
for sending/receiving)
(Master station:
for sending
Local station:
for sending/receiving)
When local station: Stores the
transmission data to the
master/other local stations. Also,
stores the received data from the
remote/other local stations.
transmission data to the
master/other local stations. Also,
stores the received data from the
remote/other local stations.
Read/write
enabled
enabled
–
Section
3.5.2 (3)
3.5.2 (3)
: Usable : Prohibited to use
* Do not write to areas that are prohibited to use. An error may occur.