Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 370

7 APPLICATION FUNCTIONS
1) To pair station Nos. 1 and 2, set the smaller station number to "Enable"
(station No. 1 in this case).
2) By setting station No. 1 to "Enable", the send range for station No. 1
will be copied as that for station No. 2.
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(2) Setting example and cyclic transmission
The following system configuration example is used to describe a setting
example and cyclic transmission.
Confirm that the network modules set for
pairing are connected to the redundant CPUs.
Control system
(system A)
Q25H
CPU
(a) Setting example
This example shows the send range for each station (LB/LW setting) when
256 points are assigned to each of station Nos. 1 to 4.
Control
station
(station
No. 1)
Tracking cable
Normal
station
(station
No. 4)
MELSEC-Q
Set two adjoining station
numbers as a pair.
Standby system
(system B)
Normal
station
(station
No. 2)
Normal
Q25H station
CPU (station
No. 3)
1)
2)
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