Cyclic Transmission Function - Mitsubishi Electric MELSEC iQ-R C R12CCPU-V User Manual

7.1

Cyclic Transmission Function

This function performs periodical data communication between a master station and slave stations using link devices.
Data transition and link device assignment
The following figure shows the data transitions between a master station and slave stations using link devices.
(1)
Ù
Ø
Ò
Ó
: Area where data is sent to other stations
(1) Master station
*1
(2) Slave station 1
*1
(3) Slave station 2
*1
(4) Slave station 3
(5) Link scan
*1 The slave station order is the same as the order set in the network configuration setting. (Page 139 Network configuration settings)
• Output from a master station
 A device of the master station turns ON.
 The device status of the master station is stored to link devices (RY and RWw) of the master station by link refreshes.
 The status of link devices (RY and RWw) of the master station is stored to link devices (RY and RWw) of slave stations by
link scans.
 The status of the link devices (RY and RWw) of the slave stations is output to an external device.
• Input from slave stations
 The status of the external device is stored to the link devices (RX and RWr) of the slave stations.
 The status of the link devices (RY and RWw) of the local stations is stored to the link devices (RX and RWr) of the master
station by link scans.
 The status of the link devices (RX and RWr) of the mater station is stored to the link devices of the master station by link
refreshes.
 The device of the master station turns ON.
7 CC-Link IE Field Network Basic FUNCTION
126
7.1 Cyclic Transmission Function
RX, RWr
×
(2)
×
(3)
(4)
×
(5)
RY, RWw
Ô
(2)
Ô
(3)
Ô
(4)
(2) (3)
RX, RWr
RX, RWr
RY, RWw
RY, RWw
(4)
Ö
RX, RWr
Õ
RY, RWw