Mitsubishi Electric MELSEC-L Series - Chapter 13 Communications Using a Random Access Buffer; Applications

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CHAPTER 13 COMMUNICATIONS USING A
RANDOM ACCESS BUFFER
This section describes communications using a random access buffer.
13.1 Applications
In communications using a random access buffer, data can be freely read from and written to any connected device
(not including an E71). A random access buffer is used as a common buffer area for all the connected devices in the
Ethernet network.
Data communications (sending/receiving) by e-mail using a CPU module cannot be used together with communications
using a random access buffer. Only one of the functions can be used at one time. (The e-mail sending function using the E71
programmable controller CPU monitoring function can be used together with communications using a random access
buffer.)
Random
access
buffer
E71
Connected
device
Connected
device
Connected
device
Connected
device
Connected
device
ReadingWriting
Writing
Reading
Writing
Reading
Writing
Reading
Writing
Reading