Chapter4 Communications Between Cpu Modules - Mitsubishi MELSEC-Q Series User Manual

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COMMUNICATIONS BETWEEN CPU MODULES
CHAPTER4 COMMUNICATIONS BETWEEN CPU
MODULES
In the multiple CPU system, the following methods are available to read/write data
between CPU modules:
• Communications with auto refresh
( Section 4.1.2, Section 4.1.3)
Data reading/writing between CPU modules
• Communications with programs
( Section 4.1.4)
Writing/reading of data among the C Controller module, PC CPU module, and
QCPU in another CPU
Reading the Motion CPU shared memory from the QCPU
• Control direction with dedicated instructions
( Section 4.2)
Control direction from the QCPU to the Motion CPU
• Communication with dedicated instructions
( Section 4.3)
Writing/reading of device data from the QCPU to the QCPU and Motion CPU in
another CPU
Event issue from the QCPU to the Motion CPU, C Controller module, and PC
CPU module
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