Mitsubishi Electric MELSEC-L Series - Example of Communications Using a Random Access Buffer

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13.7 Example of Communications Using a Random Access
Buffer
The following figure shows an example of a write operation from a connected device.
The receive completion flag is provided at the end of the received data.
The receive completion flag is monitored.
When the receive completion flag turns on, the data is transmitted from the random access buffer to the CPU
module.
Data received
R20000
R20009
Data received
11710
11719
11720
Device memory
Random access buffer
CPU module E71
1
1
Connected
device
Receive completion flag
Receive process program
1
2
3