Omron CS1W-ETN21 Improved Fins Message Communications, Additional E-mail Functions

Features Section 1-2

Improved FINS Message Communications

The following functions have been improved over previous Ethernet Unit mod- els. They allow the scale of the system to be increased, and can give greater flexibility to the system configuration including the host computer.

•Expanded number of nodes (to 254 max., from 126 max.)

•Communications are now enabled even if the host computer's IP address is dynamic. (DHCP client computers can be handled, including TCP/IP and UDP/IP.)

→Previously IP addresses for host computers could be fixed only.

→For Ethernet Units with Unit Ver. 1.3 or later, the Unit can be protected against access from nodes with dynamically changed IP addresses (set to be fixed only).

•An automatic client FINS node address allocation function now makes it possible to connect online to the PLC even if no FINS node address has been set for the host computer.

→Previously online connection to the PLC was possible only after a FINS node address was set for the host computer.

•FINS message communications are now enabled in TCP/IP (with up to 16 simultaneous connections), so a system can now utilize FINS message communications in both UDP/IP and TCP/IP.

→Previously only UDP/IP could be used.

•Multiple FINS applications (such as the CX-Programmer) on the same computer can now be connected online to the PLC via Ethernet (in either TCP/IP or UDP/IP).

→Previously when one FINS application on a computer was connected online to the PLC, it was impossible to connect any other at the same time.

Transferring Data Files between Host Computers (FTP Server Function)

A built-in FTP server function enables data files in the PLC to be read from a workstation or computer with an FTP client function, and for data to be written to the PLC. Large amounts of data can be transferred at a time from clients, without requiring ladder programming.

Additional E-mail Functions

Mail Receive Function (Receiving Commands for the PLC by E-mail)

E-mail File Attachment Function

With previous Ethernet Unit models (CS1W-ETN01/CS1W-ETN11/CJ1W- ETN11), e-mail could sent only from the Ethernet Unit, and the data that could be sent was limited to user-created ASCII text data and system data. Now the following e-mail functions have been added.

Commands for the PLC (mail remote commands) can be written into e-mail, and the Ethernet Unit can receive them, execute them, and send responses by e-mail.

This function can be linked to the CS/CJ File Memory function.

•The Ethernet Unit can automatically generate data files (6,000 words maximum per file) from the CPU Unit's I/O memory status, and send them to specified e-mail addresses as e-mail attachments. It can also send pro- gram files from the Memory Card (up to 1 MB) to specified e-mail addresses as e-mail attachments.

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