40
1 FUNCTIONS
1.1 Cyclic Transmission
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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.
• Data flow
• Program
Sending station: Master station (station No.0)
Classification
Setting details
Label to be defined
Define global labels as shown below:
RJ71GN11-T2
RJ71GN11-T2
No.0
No.1
SET B0
B0
LB0
LB0
LW0
LW0
LW100
LW100
LB100
B0
W0
W100
W0
W100
B100
B100
LB100
B0
Cyclic transmission
Link refresh
Send
request
Station
No.1
Station
No.1
Station
No.2
Station
No.2
Station
No.1
Station
No.2
Station
No.1
Station
No.2
Station
No.1
Station
No.2
Station
No.1
Station
No.2
Station
No.1
Station
No.2
Station
No.1
Station
No.2
CPU module
CPU module
Master station
Local station
Send data (W)
Receive data (W)
Summary of Contents for MELSEC iQ-R CC-Link IE TSN
Page 1: ...MELSEC iQ R CC Link IE TSN User s Manual Application RJ71GN11 T2 ...
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Page 323: ...APPX Appendix 10 Added and Enhanced Functions 321 A MEMO ...
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