Example Of Communications With Random Access Buffer - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

Example of communications with random access buffer

The following figure shows an example of the write operation from the external device.
CPU module
Device memory
D10000
Data received
D10009
Program for receive processing
Ó
 The receive completion flag is set at the end of the received data.
 The receive completion flag is monitored.
 When the receive completion flag turns on, the data is transferred from the random access buffer to the CPU module.
1 FUNCTIONS
106
1.6 Communications Using the Random Access Buffer
RJ71EN71
Random access buffer
21710
Ô
Data received
21719
21720
1
Ó
Ô
External device
1
Ò
Receive completion flag