Mitsubishi Electric MELSEC iQ-R Series User Manual page 166

■Data assurance by handshake of the link relay
In communications using LB and LW, the link relay (LB) is sent after the link register (LW). Therefore, data inconsistency of the
link register (LW) can be prevented by handshake in the data of the link relay (LB).
The following shows the program example when 'Cyclic data (station No.0)' (W0 to W3) of the master station is sent to 'Cyclic
data (station No.1)' (W0 to W3) of the local station.
A handshake is established by turning on 'Handshake (station No.0)' (B0) of the master station and turning on 'Handshake
(station No.1)' (B100) of the local station after the send data has been stored.
No.0
CC-Link IE TSN
Plus module
• Data flow
Send
request
Send data (W)
SET B0
• Program
Sending station: Master station (station No.0)
Classification Setting details
Label to be defined Define global labels as shown below:
9 FUNCTIONS
164
9.2 Cyclic Transmission
No.1
CC-Link IE
TSN Plus module
CPU
module
B0
Station Station
No.1 No.1
B100
Station Station
No.2 No.2
W0
Station Station
No.1 No.1
W100
Station Station
No.2 No.2
Local
station
LB0 LB0
Station
No.1
LB100 LB100
Station
No.2
LW0 LW0
Station
No.1
LW100 LW100
Station
No.2
CPU
module
B0
B0
Station Receive data (W)
No.1
B100
Station
No.2
W0
Station
No.1
W100
Station
Cyclic transmission
No.2
Link refresh