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5 PRELIMINARY INFORMATION
5.2.2 About dedicated commands for use of the buffer memory automatic update function
A series
(Bank 2)
M
0
to 19F
H
H
M
118
to 19F
H
H
M
1A0
to 1BF
H
H
Station 1
M
1C0
to 2BF
H
H
M
2C0
to 3BF
H
H
M
3C0
to 55F
H
H
M
4D8
to 55F
H
H
M
560
to 57F
H
H
Station 2
M
580
to 67F
H
H
M
680
to 77F
H
H
When using the FROM/TO commands, specify the buffer
memory address of the master station where the R2 buffer
memory has been assigned.
When the buffer memory automatic update function is used, the R2 buffer memory to
be specified differs as described below between when the FROM/TO command is
used and when the dedicated command is used.
(1) When the FROM/TO command is used
Specify the buffer memory address of the master station where the buffer
memory of the R2 to be accessed is assigned.
(2) When the dedicated command is used
Since the station number of the R2 to be accessed can be set, specify the buffer
memory of the R2 directly.
(Example) When automatic update has been set as described below, the contents of
the "status storage area ( R 2 1A0
When the FROM/TO command is used:
Specify the buffer memory address of the master station.
•
When the master station is the A series ............... M 560
•
When the master station is the Q/QnA series ...... M 2560
When the dedicated command is used:
Specify the station number (2) and buffer memory address ( R 2 1A0
of the R2.
Master station buffer memory
Q/QnA series
(Automatic update buffer)
2000
to 219F
M
H
H
Initial setting area
M
2118
to 219F
H
H
Status storage area
M
21A0
to 21BF
H
H
M
21C0
to 22BF
Sending area 2
H
H
M
22C0
to 23BF
Receiving area
H
H
M
23C0
to 255F
Initial setting area
H
H
M
24D8
to 255F
H
H
M
2560
to 257F
Status storage area
H
H
Sending area 2
M
2580
to 267F
H
H
Receiving area
M
2680
to 277F
H
H
)" of station No. 2 are to be read.
H
Sending area 1 (for 88
Sending area 1
Sending area 1
Sending area 1 (for 88
When using the dedicated commands, specify the
station number and R2 buffer memory address.
5 - 5
MELSEC-A
R2 buffer memory (Station 1)
Initial setting area (for 1A0
H
)
H
Status storage area (for 20
H
Sending area 2 (for 100
)
H
Receiving area (for 100
)
H
R2 buffer memory (Station 2)
Initial setting area (for 1A0
H
)
H
Status storage area (for 20
H
Sending area 2 (for 100
)
H
Receiving area (for 100
)
H
of bank 2
H
H
)
H
)
R2
0
to 19F
H
H
R2 118
to 19F
H
H
)
R2 1A0
to 1BF
H
H
R2 200
to 2FF
H
H
R2 300
to 3FF
H
H
)
R2
0
to 19F
H
H
R2 118
to 19F
H
H
)
R2 1A0
to 1BF
H
H
R2 200
to 2FF
H
H
R2 300
to 3FF
H
H
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