Omron CS1W-ETN21 operation manual FTP Server Function, Mail Send Function

Overview of Communications Functions Section 1-5

1-5-3 FTP Server Function

The Ethernet Unit has a built-in FTP server, so other computers on the Ether- net can read or write individual files on a Memory Card mounted to the CPU Unit or in EM File Memory. This allows files to be exchanged between the host computer and the PLC, with the host computer functioning as an FTP client and the PLC as an FTP server.

Host computer (FTP client)

	Ethernet
FTP commands	Ethernet Unit
CS/CJ-series
CPU Unit	Memory Card or
	EM File Memory

Host computer to PLC		PLC to host computer
File data		File data
	Memory Card or
	EM File Memory

1-5-4 Mail Send Function

Memory Card or EM File Memory

This function automatically sends data in the CPU Unit's I/O memory (or a file on a Memory Card) as an e-mail attachment from the Ethernet Unit to speci- fied e-mail addresses when a pre-specified PLC condition is met. User-cre- ated data (in ASCII), error log data, and status data in the CPU Unit can all be sent as text.

E-mail can be sent over the Internet, and not just within the intranet.

SMTP server

Ethernet

E-mail

CS/CJ-series CPU Unit

Ethernet Unit

The e-mail can be sent on any of the following types of timing:

When the Mail Send Switch turns ON

When the value of a specified word meets a condition

When the value of a specified bit meets a condition

When an error is recorded in the Ethernet Unit's error log

When the CPU Unit's operating mode is changed

At regular intervals

Note (1) Depending on the Internet service provider (ISP), the use of POP before SMTP may be defined from the standpoint of security considerations. (This Unit handles POP before SMTP.)

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