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7 FUNCTIONS
7.1 Cyclic Transmission
7 FUNCTIONS
This chapter describes the functions of CC-Link IE Field Network Basic.
When the C Controller module is used, refer to the following.
MELSEC iQ-R C Controller Module User's Manual (Application)
7.1 Cyclic Transmission
This function periodically performs data communication between the master station and slave stations using link devices.
Data flow and link device assignment
The following figure shows the data flow of communications using link devices between the master station and slave stations.
*1 The slave station order is the same as the order set in the network configuration setting. ( Page 35 Network Configuration Settings)
• Output from the master station
• Input from the slave station
: Area where data is sent to other stations
The devices of the master station turn on.
The status of the devices of the master station is stored in the link devices (RY, RWw) of the master station by link refresh.
The status of link devices (RY, RWw) of the master station is stored in the link devices (RY, RWw) of each slave station by link scan.
The status of the link devices (RY, RWw) of the slave station is output to external devices.
The status of external devices is stored in the link devices (RX, RWr) of each slave station.
The status of the link devices (RX, RWr) of each slave station is stored in the link devices (RX, RWr) of the master station by link scan.
The status of the link devices (RX, RWr) of the master station is stored in the devices of the master station by link refresh.
The devices of the master station turn on.
RX, RWr
RX, RWr
RX, RWr
RY, RWw
RY, RWw
RY, RWw
RX, RWr
RY, RWw
M0
Y
Ò
×
×
×
Ô
Ô
Ô
Ö
Õ
Ó
Ø
X0
Ù
Slave station 1
*1
Slave station 2
*1
Slave station 3
*1
Slave
station 1
Slave
station 2
Slave
station 3
Device
Device
Slave
station 1
Slave
station 2
Slave
station 3
Link
refresh
Link
refresh
Link
scan
Master station
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