Mitsubishi Electric MELSEC Q Series Reference Manual page 26

(g) Group cyclic transmission
Cyclic transmission can be performed only with specified stations.
A Universal model QCPU can share cyclic data with stations in the same shared group. (
Section 4.1.8)
This function is useful, for example, when sharing data among all stations that integrates and controls
production lines and not sharing the data with stations that controls other machines.
Also, receiving cyclic data only from any specific stations can reduce the number of link refresh points, resulting
in a shorter link refresh time.
Control station
No.1
Link relay (LB)
LB0
No.1 send range
No.2
No.3
No.4
No.5
LB7FFF
24
Shared group No.1
Normal station Normal station
No.2 No.3
No.1
No.2 send range
No.3 No.3 send range
Shared group No.2
Normal station
No.4
No.1 No.1
No.2
No.4 send range
No.5
Page 83,
Normal station
No.5
No.1
No.4
No.5 send range