Multiple Plc System Support - Mitsubishi MELSEC-Q Series User Manual

4 FUNCTIONS

4.4.12 Multiple PLC System Support

Power
CPU1 CPU2 CPU3 CPU4
supply
Reading of
programs
Power
CPU1 CPU2 CPU3 CPU4
supply
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This function allows monitoring and reading/writing programs from/to any CPU in a
multiple PLC system mounted with the QJ61BT11 via AJ65BT-G4-S3 or other station
CPUs.
This is illustrated by the following example.
It is possible to monitor CPU4 of the local station from peripheral device A connected
to the AJ65BT-G4-S3 and read the programs of CPU2 of the master station from
peripheral device B connected to CPU3 of the local station.
This function cannot be used with function version A.
I/O
I/O
Peripheral
device B
POINT
Access source CPUs must be control PLCs in order to make an access.
Master station
QJ61
I/O I/O
BT11
Terminal
resistor
Monitoring
Local station
QJ61
I/O I/O
BT11
Terminal
resistor
AJ65BT-G4-S3
MELSEC-Q
Peripheral
device A
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