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MELSEC-F
1OVERVIEW
This manual provides information on the specifications of the Ethernet interface block,
FX
3U-ENET (hereinafter called FX3U-ENET or the Ethernet module), as well as the
procedures before starting operation, the control procedures and data communication
method for communicating with external devices, maintenance, inspection, and
troubleshooting.
When the program examples introduced in this manual are applied to an actual
system, examine the safety of the control in the target system before use.
1.1 Overview of the Ethernet Module
The Ethernet module is an interface module on the PLC side for connecting the FX
3G
/
FX
3U
/
FX3UC series PLC with the host system, such as a personal computer work
station, and other PLCs using the TCP/IP or UDP/IP communication protocol via
Ethernet (100BASE-TX, 10BASE-T).
Router
Router
Network Range (Only within LAN)
Local
station
External device
GX Developer
Internet service
Provider
Internet service
Provider
External device
Internet
(Public dial-up line)
Mail server
Hub
Hub
Mail server