Mitsubishi QJ71GP21-SX, Reference Manual

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4
- 26 4.1 Cyclic Transmission Function
4.1.8 Group cyclic transmission
4
FUNCTIONS
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.
*1*2
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.
Appendix 3 Functional Upgrade of CC-Link IE controller network
* 2 Modules other than Universal model QCPUs do not support this function, and operate as stations
with no shared group setting.
Remark
(1) 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.
(2) 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.
Section 6.3.3 Shared group
Figure 4.32 Group cyclic transmission
Control station
No.1 Normal station
No.2 Normal station
No.3 Normal station
No.4 Normal station
No.5
Shared group No.1 Shared group No.2
Link relay (LB)
No.1 send range No.1
No.5
No.4 send range
No.1
No.5 send range
No.4
No.2
No.3
No.4
No.5
No.1
No.3
No.2 send range
No.1
No.3 send range
No.2
LB0
LB7FFF