Mitsubishi QJ71LP21 Reference Manual page 192

7 APPLICATION FUNCTIONS
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(b) Return to system as standby station:
The multiplexed remote master station returns to the system as the sub-
master operating station (standby station).
The multiplexed remote sub-master station continues the control of the
remote I/O stations.
Multiplexed remote
master station
Remote I/O station Remote I/O station
Multiplexed remote
master station
Sub-master operation
Remote I/O station Remote I/O station
Multiplexed remote
sub-master station
Master operation
Remote I/O station
Return of multiplexed remote master station to normal
Multiplexed remote
sub-master station
Master operation
Information
transfer
Remote I/O station
MELSEC-Q
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