Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

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15 NETWORK COMMON INSTRUCTIONS
15.2 CC-Link Dedicated Instructions
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15
Processing details
• These instructions read the number of words of data specified by (s1)+4 from the start device of the own station specified
by (s2), and write the data in the device in the target station specified by (s1)+2 and (s1)+3. Specify the target station in
(s1)+1. Upon completion of writing the data, the completion device specified by (d) turns on.
• The execution status and the completion status of the RIWT instruction can be checked with the completion device (d) and
the completion status indication device (d)+1.
• The following figure shows the execution timing of the RIWT instruction.
• Completion device (d)
This device turns on during END processing of the scan where the RIWT instruction completes, and turns off during the next END processing.
• Completion status indication device (d)+1
This device turns on or off depending on the completion status of the RIWT instruction.
When completed successfully: The device remains off.
When completed with an error: The device turns on during END processing of the scan where the RIWT instruction completes, and turns off during the next
END processing.
• When completed successfully
RIWT
(s2)
(s1)+2
(s1)+3
Send buffer
CPU module CPU module Network module Network module
[Own station] [Target station]
END 0 END 0 END 0 END 0 END 0
END 0 END 0 END 0 END 0 END 0
OFF
OFF OFF
OFF
ON
ON
OFF
RIWT
3000
3000
Sequence scan
Start contact
CPU module on
the own station
CPU module on
the target station
Network
module
Network
module
Completion device
(d)
Completion status
indication device
(d)+1
Device where the
write data is stored
(s2)
Sequence scan
Device for storing
the write data
(s1)+2, (s1)+3
1 scan
Send buffer Receive buffer