Mitsubishi Electric MELSEC Q Series Reference Manual page 418

(3) Function
(a) RECV instruction overview
Data sent by the SEND instruction from another station are read out from the specified channel to the word
devices (in and after (D1)) on the own station.
Upon completion of reading data from the specified channel of the own station, Completion device (D2) turns
ON.
[Own station]
CPU module
(D2)
(b) Checking the execution status of the RECV instruction
The execution status of the RECV instruction (Normal completion, Error completion) can be checked with the
following devices specified in the setting data.
• Completion device (D2)
Turns ON in the END processing for the scan after completion of the RECV instruction, and goes OFF in
the next END processing.
• Completion status indication device ((D2)+1)
Turns ON in the END processing for the scan after completion of the RECV instruction, and turns OFF in
the next END processing, only when the RECV instruction has failed.
(c) Operation in RECV instruction execution
• Operation of the own station
Program of own station
RECV instruction
RECV execution request
flag (SB0030 to SB0037)
Completion device of
own station (D2)
Completion status
indication device ((D2)+1)
416
CC-Link IE Controller
Network module
Channel 1
RECV
Channel n
Channel 8
END END
processing processing
RECV instruction execution
ON
OFF
OFF
OFF
[Sending station]
CPU module
Writing by
SEND
END
processing
Reading from channel specified in
RECV instruction completed
ON
ON When failed
Normal completion
1 scan
Network module
Channel 1
Channel n
Channel 8
END
processing