Mitsubishi Electric MELSEC Q Series User Manual page 269

(1) In case of programmable controller CPU  C Controller module
(a) Processing overview
Programmable controller CPU
CPU shared memory
Host CPU operation information area
System area
Auto refresh area
Data written by TO instruction
(User setting area)
1)
Sequence program
Execution of TO instruction
Execution of FROM instruction
When executing sequence program of
Processing
programmable controller CPU
By the TO instruction, the data are written to the user
1) setting area in the CPU shared memory of the
programmable controller CPU.
2)
3)
By the FROM instruction, the data are read out to the
4)
specified device in the programmable controller CPU.
CHAPTER 14 FUNCTIONS USED BY MULTIPLE CPU SYSTEM
3)
4)
Execution of the bus interface function (QBF_ToBuf), the
– data are written to the user setting area in the CPU shared
memory of the C controller module.
Execution of the bus interface function (QBF_FromBuf), the
– data in the auto refresh area in the programmable controller
CPU are transferred to the user program.
C Controller module
CPU shared memory
Host CPU operation information area
System area
Auto refresh area
Data written by QBF_ToBuf function
(User setting area)
User program
Execution of QBF_ToBuf function
Execution of QBF_FromBuf function
At bus interface function execution of
C Controller module
–
–
2)
14
267