Group Cyclic Transmission - Mitsubishi Electric MELSEC Q Series Reference Manual

4.1.8

Group cyclic transmission

A Universal model QCPU can share cyclic data only with the stations that belong to the same shared group.
It does not receive cyclic data of the stations in different shared groups.
Stations with no shared group setting share cyclic data with all stations.
*1 Check the serial No. and software version for applicability. (
*2 Modules other than Universal model QCPUs do not support this function, and operate as stations with no shared group
setting.
Control station
No.1
Link relay (LB)
LB0
No.1 send range
No.2
No.3
No.4
No.5
LB7FFF
Remark
● Use this function to perform cyclic transmission only with any given stations, for example, as described below.
• All stations need to share the data of the station controlling production lines.
• Data sharing is not desired between the stations that control different machines.
● Since each station receives only the cyclic data from any given stations, the number of link refresh points can be reduced,
resulting in a shorter link refresh time.
(1) Setting a shared group
Shared groups can be set in "Network Range Assignment" of the control station.
This function can be used when the control station is a Universal model QCPU. (
Shared group No.1
Normal station Normal station
No.2 No.3
No.1 No.1
No.2 send range No.2
No.3 No.3 send range
CHAPTER 4 FUNCTIONS
Page 606, Appendix 3)
Shared group No.2
Normal station Normal station
No.4 No.5
No.1 No.1
No.4 send range No.4
No.5 No.5 send range
Page 196, Section 6.3.3)
*1*2
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