Mitsubishi Electric MELSEC iQ-R C R12CCPU-V User Manual page 163

■Communication by refresh (when C Controller module is on the sending side)
When the CPU number-based data assurance is enabled, the data is not assured.
C Controller module Programmable controller CPU Programmable controller CPU Programmable controller CPU
(CPU No.1) (CPU No.2) (CPU No.3) (CPU No.4)
CPU buffer CPU buffer CPU buffer CPU buffer
memory memory memory memory
Without
refresh
function
Ó Ó Ó
Device Device Device Device
Ô
Ô
Ò
Ô
8
CCPU_ToBufHG( );
The data is written from the program.
At END processing of each CPU, the data is read.
The data read completion from each CPU is notified to the CPU No.1.
8 MULTIPLE CPU SYSTEM FUNCTIONS
161
8.4 Data Communication Between CPU Modules