Mitsubishi Electric MELSEC-Q Series User Manual page 44

(1) Input and output of the master station
Data can be input to and output from all slave stations. Areas are assigned in the order of station number.
(a) Data input to the master station
Data in RX and RWr of all slave stations are stored into RX and RWr of the master station.
In a local station, however, data in RY and RWw of a local station are stored into RX and RWr of the master
station.
(b) Data output from the master station
Data stored in RY and RWw of the master station are output to RY and RWw of all slave stations.
In a local station, however, data are stored into RX and RWr.
(2) Input and output of a local station
Data can be input from all slave stations. Data can be output from a local station only to the master station.
Areas are assigned in the order of station number.
(a) Data input to a local station
Data in RY and RWw of other stations are stored into RX and RWr of a local station.
Data in RX and RWr of other slave stations are stored into RY and RWw of local stations.
(b) Data output from a local station
Data stored in RY and RWw (the area in the host station for data sending) are stored into RX and RWr of the
master station.
42