Example Of Communications Using A Random Access Buffer - Mitsubishi Electric QJ71E71-100 User Manual

13.7
Example of Communications Using a Random Access
Buffer
The following figure shows an example of a write operation from a connected device.
CPU module
Device memory
R20000
Data received
R20009
Receive process program
\
The receive completion flag is provided at the end of the received data.
1
The receive completion flag is monitored.
2
When the receive completion flag turns on, the data is transmitted from the random access buffer to the CPU
3
module.
CHAPTER 13 COMMUNICATIONS USING A RANDOM ACCESS BUFFER
E71
Random access buffer
11710
Data received
11719
11720
1
\
Connected
device
1
Receive completion flag
13
187