Omron CS1W-ETN21 operation manual Operation

Ethernet Unit Function Guide Section 1-1

Intranet

Production line A

Ethernet

Ethernet Unit

Router

Router

FINS message	Connecting through multiple segments:
communications	Use FINS/TCP.
Production line B

Mail	Ethernet Unit
communications

PLC

FINS message communications

Ethernet Unit

PLC

Memory Card

	Connecting within the same segment:
	Use FINS/UDP.
Reference	SECTION 6 FINS Communications

Monitoring PLC Changes and Sending Equipment Status to the Operator by E-mail

Operation	When the mail send function is used, automatic communications applications
	via the Internet can be constructed relatively easily. With this Ethernet Unit,
	the following mail triggers can be set as PLC changes. When these settings
	can be used, no special ladder program is required for sending e-mail.
	• When a particular bit (the Mail Send Switch) turns ON
	• When values change in particular words (=, <>, <, <=, >=, >)
	• When a particular bit changes (either OFF to ON or ON to OFF)
	• When a change occurs at the Ethernet Unit (stored in error log)
	• When a change occurs at the CPU Unit (e.g., a non-fatal error, a fatal
	error, or a mode change)
	• At regular intervals
	The following data can be sent by e-mail:
	• Text (user-created text strings (ASCII data), Ethernet Unit error log data,
	and status data)
	• Attached files (IOM data created automatically by the Ethernet Unit, data
	tables, and files in File Memory)
	To use the mail send function, there must be a separate SMTP server on the
	network. When using the SMTP server of an Internet Service Provider (ISP),
	security measures, such as POP before or SMTP, may be required. (This Unit
	handles POP before SMTP.) In addition to the IP address, the host name used
	for the DNS service can be specified for the SMTP/POP3 server.

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