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3. SPECIFICATIONS
(b) Parameters set by configuration software
The buffer memory address at which the input data for each station is stored is
displayed for the Customized I/O data, O. Addr item on the configuration software
screen.
The memory address is determined by the value of the Customized I/O data, O.
Addr item on the configuration software screen and the addressing mode set from
the configuration software Master Setting screen.
See the example below.
<Example>
Consider the case where the Customized I/O data, O. Addr item is set as follows:
Data Type
BYTE
BYTE
WORD
WORD
1) If the addressing mode is byte addressing
The setting screen appears as:
and the relationship between the buffer memory address and O. Addr is shown
in the diagram below.
0080
H
0081
H
0082
H
0083
H
2) If the addressing mode is word addressing
The setting screen appears as:
and the relationship between the buffer memory address and O. Addr is a 1:1
correspondence, as shown in the diagram below.
0080
H
0081
H
0082
H
0083
H
0084
H
0085
H
O. Addr
0
...1)
2
...2)
3
...3)
5
...4)
0
3
2
4
5
6
0
2
3
5
−
3
12
MELSEC-A
1)
2)
3)
4)
1)
2)
3)
4)
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Troubleshooting
