YASKAWA MP2300S - 6.4 Communication with PLC Manufactured by Mitsubishi Electric Corporation (MELSEC protocol)

6.4 Communication with PLC Manufactured by Mitsubishi Electric Corporation (MELSEC protocol)
6.4.1 When the MP2300S Acts as Slave (automatic receive function is used)
6-75
Built-in Ethernet Communications
6.4 Communication with PLC Manufactured by Mitsubishi Electric
Corporation (MELSEC protocol)
In Ethernet communication between the MP2300S and MELSEC (Q, A series) general-purpose PLC manufactured by
Mitsubishi Electric Corporation, the MELSEC protocol (A-compatible 1E frame) is used as a communication protocol.
Using the MELSEC protocol allows a master to read/write the slave register content.
This chapter explains communication when the MP2300S acts as a slave and a master respectively.
For using the MP2300S as a slave, we explain communication using the automatic receive function.
For using the MP2300S as a master, we explain communication using the I/O message communication function.
6.4.1 When the MP2300S Acts as Slave (automatic receive function is used)
This section explains how to carry out a fixed buffer communication with the BUFSND command (with procedure) of
the MELSEC Q series using the MP2300S automatic receive function.
Fig. 6.12 Message Flow with the MELSEC Q Series when the Automatic Receive Function Is Used
MELSEC protocol
(fixed buffer communication, with procedure)
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MELSEC Q series
BUFSND command
(ladder application)
Slave
Master
MP2300S
(Local station)
MELSEC Q series
(Remote station)
EthernetEthernet
Communication Protocol
Type
Connection Type
Data Code Type
MELSEC protocol
TCP / UDP
BIN / ASCII
Automatic receive function
(ladderless)