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4 FUNCTIONS
MELSEC-QnA
[Word data from the local station
the master station/other local stations]
13
With the TO instruction, the word data to be sent to the master station or other local
stations is written to the local station's "remote register (RWw)" in the buffer
memory.
However, only writing can be performed to the area corresponding to the host
station number.
14
The data in the "remote register (RWw)" in the buffer memory is automatically (for
each link scan) stored in the master station's "remote register (RWr)" and other local
station's "remote register (RWw)".
15
The word data stored in the "remote register (RWr)" in the buffer memory is
received to the programmable controller CPU with the FROM instruction.
16
The word data stored in the "remote register (RWw)" in the buffer memory is
received to the programmable controller CPU with the FROM instruction.
FROM
to
RWw0
RWw1
RWw2
RWw3
RWw4
RWw5
RWw6
RWw7
RWw8
RWw9
RWwA
RWwB
RWwC
RWwD
RWwE
RWwF
RWwFF
RWw10
RWw11
RWw12
RWw13
RWw14
to
RWr0
RWr1
RWr2
RWr3
RWr4
RWr5
RWr6
RWr7
RWr8
RWr9
RWrA
RWrB
RWrC
RWrD
RWrE
RWrF
RWrFF
RWr10
RWr11
RWr12
RWr13
RWr14
Programmable controller
CPU
Master station
Remote register (RWr) Remote register (RWw) Remote register (RWw)
to
RWw0
RWw1
RWw2
RWw3
RWw4
RWw5
RWw6
RWw7
RWw8
RWw9
RWwA
RWwB
RWwC
RWwD
RWwE
RWwF
RWwFF
RWw10
RWw11
RWw12
RWw13
RWw14
Local station
(station No. 1:
occupies 1 station)
Local station
(station No. 2:
occupies 4 stations)