Mitsubishi Electric MELSEC-Q Series - Page 442

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(4) 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 target station is on a redundant system, the station numbers used for the redundant system in this case are
assumed to be No.3 and No.4.
(a) System configuration example
• When the target station is not on a redundant system
• When the target station is on a redundant system
CPU module
ZNWR instruction
request source
(Own station)
ZNWR instruction
request target
(Target station)
D750
D751
D752
D753
D300
D301
D302
D303
CC-Link IE
Controller
Network module
Channel 2
CPU module CC-Link IE
Controller
Network module
CPU module CC-Link IE
Controller
Network module
CPU module CC-Link IE
Controller
Network module
Network No.1
Station No.1 Station No.2
Station No.4 Station No.3
Network No.1
Channel 2
CPU module
CPU module
CPU module
CPU module
Station No.1
Station No.2
Station No.3 (Control system)
Station No.4 (Standby system)
D750
D751
D752
D753
D300
D301
D302
D303
CC-Link IE
Controller
Network module
CC-Link IE
Controller
Network module
CC-Link IE
Controller
Network module
CC-Link IE
Controller
Network module
ZNWR instruction
request source
(Own station)
ZNWR instruction
request target
(Target station)