Mitsubishi Electric MELSEC Q Series Reference Manual page 363

(5) Program example
In this program example, when M112 turns ON, data in D750 to D753 of station No.2 (own station) are written to
D300 to D303 of station No.3 (target station).
If the own station is on a redundant system, the station numbers used for the redundant system in this case are
assumed to be No.1 and No.2.
(a) System configuration example
• When the own station is not on a redundant system
Station No.1
CPU module CC-Link IE
Controller
Network module
CPU module CC-Link IE
Controller
Network module
Station No.4
• When the own station is on a redundant system
Station No.1 (Standby system)
CC-Link IE
CPU module
Controller
Network module
CC-Link IE
CPU module
Controller
Network module
Station No.4
CPU module
WRITE instruction
request source
(Own station)
D750
D751
D752
D753
Network No.1
CPU module
WRITE instruction
request target
(Target station)
D300
D301
D302
D303
CPU module
WRITE instruction
request source
(Own station)
D750
D751
D752
D753
Network No.1
CPU module
WRITE instruction
request target
(Target station)
D300
D301
D302
D303
CHAPTER 9 DEDICATED INSTRUCTIONS
Station No.2
CC-Link IE
Controller
Network module
Channel 2
CC-Link IE
Controller
Network module
Station No.3
Station No.2 (Control system)
CC-Link IE
Controller
Network module
Channel 2
CC-Link IE
Controller
Network module
Station No.3
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