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8 MULTIPLE CPU SYSTEM FUNCTIONS
8.4 Data Communication Between CPU Modules
• Programmable controller CPU
⇔
C Controller module
Processin
g order
Process at END processing in programmable controller
CPU
Processing at execution of the function in a C Controller
module
(1)
Device data for programmable controller CPU are transferred to the
refresh area.
(2)
Device data of the user program is written to the CPU buffer memory
by executing the C Controller module dedicated function
(CCPU_ToBuf).
(3)
Device data in the refresh area of the programmable controller CPU is
read to a user program by executing the C Controller module
dedicated function (CCPU_FromBuf).
(4)
Device data of the CPU buffer memory in the C Controller module is
transferred to a device for C Controller modules in the programmable
controller CPU.
(1)
(2)
(3)
(4)
Programmable controller CPU
C Controller module
CPU buffer memory
CPU buffer memory
Refresh area
Device
User program
For programmable controller CPU
Execution of the CCPU_ToBuf function
For C Controller module
Execution of the CCPU_FromBuf function
Summary of Contents for MELSEC iQ-R C R12CCPU-V
Page 1: ...MELSEC iQ R C Controller Module User s Manual Application R12CCPU V ...
Page 2: ......
Page 23: ...1 EXECUTING PROGRAMS 1 3 I O Access Timing 21 1 MEMO ...
Page 32: ...30 3 MEMORY CONFIGURATION OF C Controller Module 3 4 Files MEMO ...
Page 257: ...I 255 MEMO ...
Page 261: ......