Yaskawa MP920 Communications Module - Manual (Page 185)

7.8 Connections with MELSEC
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7.8 Connections with MELSEC
This section gives an example of a system configuration in which an MP900-Series 218IFA
Module and MELSEC are connected by Ethernet.
7.8.1 System Configuration
Note: Make the 218IFA Module the Master, and make the MELSEC Con-
troller the Slave.
7.8.2 Message Flow
Extended MEMOBUS messages are exchanged between the MP920 and the 218IFA, and
MELSEC messages are exchanged between the 218IFA and MELSEC.
For MELSEC communications, check the operation when the A2U CPU and AJ71E71 are used in
combination.
218IFA Module
MELSEC
A2U CPU
AJ71E71
218IF Master communications
Ethernet
PS-01 MP920
CPU-01
218IFA
Protocol
conversion
Local
station
Standard
MEMOBUS
command
Messages
MELSEC
Remote
station
MELSEC
messages
Ethernet
INFO