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125
CHAPTER 8 FUNCTIONS
8
8.
1
C
ycl
ic
Tra
n
smi
ssi
on
8.
1.
1
Dat
a f
low and
lin
k dev
ice a
ssignm
ent
(2) Master and local stations
Data can be written into the send range of each station's link device (RY, RWw) and can be sent to any station on
the same network.
The status data of the link devices (RY, RWw) of the master station are stored in the link devices (RX, RWr) of
each local station.
The status data of the link devices (RY, RWw) of local stations are stored in the link devices (RX, RWr) of the
master station and the link devices (RY, RWw) of other local stations.
• Output from the master station
• Input from the local station
The device of the CPU module turns on.
The device status data of the CPU module is stored in the link device (RY, RWw) of the master station by link
refresh.
The status data of the link device (RY, RWw) of the master station is stored in the link device (RX, RWr) of the
local station by link scan.
The status data of the link device (RX, RWr) of the local station is stored in the device of the CPU module.
The device of the CPU module turns on.
The status data of the device of the CPU module is stored in the own station send range of the link device (RY,
RWw).
The status data of the link device (RY, RWw) of the local station is stored in the link device (RX, RWr) of the
master station by link scan.
The status data of the link device (RX, RWr) of the master station is stored in the device of the CPU module by
link refresh.
1
8
2
4
6
5
3
7
Local station
RX, RWr
RY, RWw
Station No.1
Local station
RX, RWr
RY, RWw
Station No.2
Local station
RX, RWr
RY, RWw
Station No.3
Master
station
Device
Device
RX, RWr
RY, RWw
M0
Y
Station No.0
CPU
module
Area where data is sent to
other stations
END
END
E
N
D
Link refresh
END
END
EN
D
Link refresh
M0
Y
Range of the
station No.1
sending data
Range of the
station No.2
sending data
Range of the
station No.3
sending data
Range of the
sending data to
the station No.1
Range of the
sending data to
the station No.2
Range of the
sending data to
the station No.3
Link scan
CPU
module
Device
END
END
E
N
D
Link refresh
Device
Sequence
scan
Sequence
scan
Sequence
scan
Sequence
scan
END
END
E
N
D
Link refresh
Station
No.1
Station
No.2
Station
No.3
Station
No.1
Station
No.2
Station
No.3
Station
No.2
Station
No.3
Station
No.1
Station
No.2
Station
No.3
Station
No.1
Station
No.3
Station
No.1
Station
No.2
Station
No.1
Station
No.2
Station
No.3
1
2
3
4
5
6
7
8