7
Ethernet Unit Function Guide Section 1-1
Reference SECTION 3 Mail Receive Function in the Operation Manual Construction of
Applications
Exchanging Large Files between a Personal Computer and PLC
Operation Use the FTP server function.
The FTP server function makes it possible to log in to the Ethernet Unit from a
computer (FTP client) as required, and to specif y folders and files to be trans-
ferred. The following items can be used as PLC File Memory.
• A Memor y Card (mounted to the CPU Unit)
• EM File Memor y (The portion of the EM Area in the CPU Unit's I/O m em-
ory used by the CX-Programmer as File Memory)
Reference SECTION 4 FTP Server Function in the Operation Manual Co nstruction of
Applications
Creating an Original Communications Procedure Using TCP/IP (UDP/IP) for the Host
Application or Communicating with PLCs from Another Manufacturer
Operation Using the socket services function, create a communications application in
the ladder program.
With the socket services function, TCP/IP or UDP/IP can be used directly to
receive data. Use the socket services to create applications based on manip-
ulating control bits or the CMND(490) instruction.
Reference SECTION 4 Socket Service Function in the Operation Manual Construction of
Applications
Mail software
Sending e-mail
Internet
IP router
Intranet
Firewall (Server room)
DNS server
POP3 server
SMTP server
SNTP server
Ethernet
(Office floor)
Mail software
Sending e-mail
Ethernet
Router
Router
(Production line)
Writing command
File attachment enabled
Ethernet
Ethernet Unit
Receiving e-mail
Writing command
File attachment enabled
Receiving e-mail at the PLC