Yaskawa MP2300S Basic Module - Manual (Page 192)

6.2 Communication with Other MP Series
6.2.1 When the MP2300S Acts as Slave (automatic receive function is used)
6-3
Built-in Ethernet Communications
6.2 Communication with Other MP Series
When Ethernet communication is carried out between the MP2300S and other MP series, the Extended MEMOBUS
protocol is used as a communication protocol. The Extended MEMOBUS protocol allows the master to read/write the
slave register contents.
This chapter explains communications when an MP2300S acts as a slave and a master respectively.
When the MP2300S acts as a slave, this chapter explains communications using an automatic receive function and a
ladder program with the MSG-RCV function.
When the MP2300S acts as a master, this chapter explains communications using an I/O message communication func-
tion and a ladder program with the MSG-SND function.
6.2.1 When the MP2300S Acts as Slave (automatic receive function is used)
This section explains how to communicate with the MP2300 message transmit function (MSG-SND) using the
MP2300S automatic receive function.
Fig. 6.1 Message Flow with MP2300 when Automatic Receive Function Is Used
Ethernet
Slave Master
Communication Protocol
Type
Connection Type
Data Code Type
Extended MEMOBUS
protocol
Ethernet
MP2300S
(Local station)
MP2300 MP2300S
218IFA
Extended MEMOBUS protocol
Automatic receive function
(ladderless)
MSG-SND function
(ladder application)
Option Module
(218IF-01)
TCP / UDP
BIN / ASCII
MP
/
E thernet LINK
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DC24V
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MP2300
YASKAWA
TEST
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ALM
TX
RUN
ERR
BAT
MON
CNFG
INT SUP
STOP
SW1
OFF ON
BATTERY
CPU I/O
218IF-01
ERR
COL
RX
RUN
STRX
TX
INIT
TEST
ON OFF
PORT
10Base-T
(Remote station)
MP2300