Mitsubishi QJ71DN91 User Manual page 64

3 SPECIFICATIONS
Buffer memory
3 - 47
(29) Master Function Transmit Data (addresses 0900
to 2559)
The data to be transmitted to each slave node is written by the TO instruction.
The data assignment is shown below.
The data is stored in the word boundaries of the slave nodes. Double-word data
is stored in the order of lower word first and higher word next. If there is an odd
number of byte input modules, one byte of empty area will be inserted for
alignment at the word boundary.
The following shows an example.
<Example>
1st node - Number of byte output modules = 3
Number of word output modules = 2
Number of double-word output modules = 2
2nd node - Number of byte output modules = 1
3rd node - Number of byte output modules = 1
address
0900
2nd byte module
H
0901 Empty
H
0902 1st word module
H
0903 2nd word module
H
Lower word of
0904
H
the 1st double-word module
Higher word of
0905
H
the 1st double-word module
Lower word of
0906
H
the 2nd double-word module
Higher word of
0907
H
the 2nd double-word module
0908
H
0909
H
If there is an odd number of
byte output modules, one byte
1st byte module
of empty area will be inserted.
3rd byte module
Output data of the 1st node
Output data of the 2nd node
1st byte module
1st byte module Output data of the 3rd node
MELSEC-Q
to 09FF /2304
H H
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