2.2 Detail Definition Setting Procedures
218IFD Detail Definition Dialog Box Details
2-11
Protocol Type
Select the application layer protocol for each connection according to the protocol supported by the remote
station.
The following table lists the protocols.
Refer to the following section for details on the protocols.
2.1 Overview (page 2-4)
If an error occurs during message communications with UDP (connectionless protocol), the following
may occur.
• The LINK/ACT indicator on the Ethernet connector may light or flash, communications data may be
lost, and communications may stop.
If this occurs, implement the following countermeasures.
1. Use Ethernet cables that meet the following requirements.
100Base-TX category 5 or better straight or cross twisted-pair cable with RJ-45 connectors
2. Separate the Ethernet cables from power cables.
If the problem persists even after implementing the above countermeasures, implement the following
countermeasures.
1. Change to TCP (connection protocol).
2. If you continue to use UDP, add the following retry programming.
Retry programming: If processing does not end within a specific time after sending a command,
implement a timeout and execute the send execution command again.
Refer to the ladder program in the following section for a programming example.
2.4 Communications with MP-series Controllers - Using the MSG-SNDE Function with the MP3000 as the
Master
Protocol Description
MEMOBUS Yaskawa’s standard MEMOBUS protocol.
Extended MEMOBUS Yaskawa’s extended MEMOBUS protocol.
A-compatible 1E frame A protocol for Mitsubishi PLCs.
QnA-compatible 3E frame A protocol for Mitsubishi PLCs.
FINS A protocol for OMRON PLCs.
MODBUS/TCP
An Ethernet protocol proposed by Modicon and used in
industrial applications.
TOYOPUC A protocol for JTEKT PLCs.
No-protocol
A protocol provided to implement general-purpose message
communications.
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