Mitsubishi MELSEC-Q Series User Manual page 288

APPENDIX
Master station
PLC CPU
Command
G.RITO
1)
Device memory
App - 27
(1) Functions
(a) Operation chart for the RITO instruction
Master module
Automatic
update buffer
2)
1) Accesses the device after the device specified by (D) of the master
module specified by Un.
2) Writes to the automatic update buffer specified by n1 and n2.
(b) The RITO instruction writes data when it is executed.
However, this instruction cannot be executed simultaneously at more than
one location for the same intelligent device station.
(c) The maximum points that can be read by the RITO instruction are 4096.
(d) The basic number of steps of the RITO instruction is 9 steps.
(e) The automatic update buffer assignment is performed using the "station
information settings" of the network parameters of the GX Developer. For
more details, see Section 6.2.
Specified
station
Communication
commences
Buffer memory
when
conditions
are met
MELSEC-Q
Intelligent device station
Automatic update
buffer memory
App - 27