Data Communication With Cpu Buffer Memory - Mitsubishi Electric MELSEC iQ-R Series User Manual

Data communication with CPU buffer memory

This method writes device data of the host CPU to the CPU buffer memory of the host CPU with MELSEC data link functions.
Device data that is written to the CPU buffer memory is transferred when the following processing is performed in another
CPU module.
Data communication flow
Programmable controller CPU
CPU buffer memory
Refresh area
Ò
Device
For programmable controller CPU
For MELSECWinCPU module
■Processing contents of the END processing in a programmable controller CPU
: Device data for a programmable controller CPU is transferred to the refresh area.
: Device data of the CPU buffer memory in this product is transferred to devices for MELSECWinCPU module in the
programmable controller CPU.
■Processing contents when a function of this product is executed
: Device data of a user program is written to the CPU buffer memory with the mdSendEx function.
: Device data in the CPU buffer memory of the programmable controller CPU is read to the user program with the
mdReceiveEx function.
Õ Ô
Execution of the mdSendEx function
Execution of the mdReceiveEx function
MELSECWinCPU module
CPU buffer memory
Ó
User program
12 BUS ACCESS FUNCTION
12.2 Data Communication Between CPU Modules
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