Mitsubishi MELSEC Q Series User Manual page 421

APPENDIX
Master station
PLC CPU
Command
G.RIWT
Device memory
4)
App - 10
(3) Functions
(a) Operation chart for the RIWT instruction
Master module
1)
Send buffer
1) Stores the data to be written to the specified station in the send buffer of
the master module.
2) Writes the data specified by (S2) to the buffer memory specified by
(S1)+2 and (S1)+3 of the station specified by (S1)+1 or to the PLC CPU
device.
3) The specified station returns the write complete response to the master
station.
4) The device specified by (D) turns ON.
(b) The RIWT instruction can be executed to multiple local stations or intelligent
device stations simultaneously.
However, for the same local station or intelligent device station, this
instruction cannot be executed simultaneously at more than one location.
Specified
station
Local module
2)
2)
Buffer memory
3)
3)
MELSEC-Q
PLC CPU
Device memory
App - 10