Mitsubishi MELSEC-Q Series User Manual page 266

APPENDIX
Master station
PLC CPU
Command
G.RIRD
Device memory
App - 5
(3) Functions
(a) Operation chart for the RIRD instruction
Master module
3)
Receive buffer
1) Accesses the buffer memory specified by (S)+2 and (S)+3 of the station
specified by (S)+1, or the PLC CPU device.
2) Stores the data that has been read in the receive buffer of the master
module.
3) Stores the data that has been read after the device specified in (D1), and
the device specified by (D2) turns on.
(b) The RIRD 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
1)
1)
Buffer memory
2)
2)
MELSEC-Q
PLC CPU
Device memory
App - 5