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1 OVERVIEW
MELSEC-QnA
(6) Link points
2048 points of remote input (RX), 2048 points of remote output (RY), and 512
points of remote register (RW) can be used for communication in one system.
For one remote station or local station, 32 points of remote input (RX), 32 points
of remote output (RY), and 8 points of remote register (RW) (RWw: 4 points,
RWr: 4 points) can be handled.
(7) System down prevention (Station cutoff function)
Because the system employs the bus method, even if there is a remote station or
local station which goes down due to power off, etc., it won't affect the
communication with other functioning remote/local stations.
Also, for the module using with the 2-piece terminal block, the module can be
replaced during data link.
Master
station
Station No.1
Remote station
(occupies 2 stations)
Station No.3
Remote station
(occupies 1 station)
Local station
(occupies 1
station)
Station No.4
Station No.5
Remote station
(occupies 2 stations)
Local station
(occupies 4
stations)
Station No.7
Master
station
Station No.1
Remote station
(occupies 2 stations)
Station No.3
Remote station
(occupies 1 station)
Local station
(occupies 1
station)
Station No.4
Station No.5
Remote station
(occupies 2 stations)
Local station
(occupies 4
stations)
Station No.7
Data link continues
Faulty
station