Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1477

• The following figure shows the execution timing of the WRITE instruction.
• When completed successfully
Sequence scan
Start contact
CPU module on
Completion device
the own station
(d2)
Completion status
indication device
(d2)+1
Device where the
write data is stored
(s2)
Network
module
Network
module
Sequence scan
CPU module on
the target station
Device for storing
the write data (d1)
• When completed with an error
Sequence scan
Start contact
Completion device
CPU module on
(d2)
the own station
Completion status
indication device
(d2)+1
Device where the
write data is stored
(s2)
Completion status
(s1)+1
Network
module
• Write processing is performed only once on the rising edge when the write command turns on.
WRITE
0 END 0 END
ON
OFF
OFF
OFF
3000
Channel n
0 END 0 END 0
3000
WRITE
0 END 0 END
ON
OFF
OFF
OFF
3000
Channel n
Target station error
0 END 0 END 0
OFF
ON
OFF
1 scan
END 0 END 0 END
0 END 0 END 0
OFF
ON
OFF
ON
OFF
1 scan
Error code
15 NETWORK COMMON INSTRUCTIONS
15.1 Link Dedicated Instructions
END
END
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