Mitsubishi Electric MELSEC Q Series Reference Manual page 408

(d) Operation in SEND instruction execution
• Operation of the own station
Program of own station
SEND instruction
Start contact
Completion device of
own station (D1)
Completion status
indication device ((D1)+1)
406
END END
processing processing
SEND instruction execution
ON
OFF
OFF
OFF
END END
processing processing
SEND to specified channel completed
ON
ON When failed
Normal completion
1 scan