Mitsubishi Electronics AJ65bt-r2 ユーザーズマニュアル
8 - 12
MELSEC-A
8 OTHER FUNCTIONS
8.5 RW update function
The RW update function assigns part of the R2 buffer memory to the remote registers
(RW).
By using this function to assign the R2 buffer memory that constantly changes to the
RWr, the changes can be detected at a high speed on the master station side.
If assigned to RWw, part of the R2 buffer memory contents can be changed easily.
If a cause of data communication occurs between the area designated in the R2 buffer
memory's RW refresh destination address designation area (
(RW).
By using this function to assign the R2 buffer memory that constantly changes to the
RWr, the changes can be detected at a high speed on the master station side.
If assigned to RWw, part of the R2 buffer memory contents can be changed easily.
If a cause of data communication occurs between the area designated in the R2 buffer
memory's RW refresh destination address designation area (
R 2
43
H
to 4A
H
) and the
master module's remote register (RW), the R2 buffer memory data will be updated
automatically.
automatically.
RWw0
RWr0
RWw1
RWr1
7
10
4
2
2
118
H
119
H
1B0
H
7
10
4
2
2
118
H
119
H
1B0
H
1B1
H
43
H
44
H
45
H
46
H
RWw0
RWr1
RWw1
RWr0
1B1
H
Master station
Remote register (RW)
Automatic
update
update
Buffer memory
Refresh destination
designation
designation
When a cause of automatic update
occurs in (1), it is updated automatically.
occurs in (1), it is updated automatically.
R2
When the RW update function is used, the data will be written as follows.
•
Master station (RWw) R2
The data written from the programmable controller CPU to the master station's
remote register (RWw) is automatically written into the R2 target buffer memory
when the cause of an automatic update occurs.
The data written from the programmable controller CPU to the master station's
remote register (RWw) is automatically written into the R2 target buffer memory
when the cause of an automatic update occurs.
•
R2 master station (RWr)
The data in the R2 target buffer memory is automatically written into the
corresponding remote register (RWr) of the master station when a cause of
automatic update occurs, and can be read to the programmable controller CPU.
The data in the R2 target buffer memory is automatically written into the
corresponding remote register (RWr) of the master station when a cause of
automatic update occurs, and can be read to the programmable controller CPU.