Omron CS Series Operation Manual page 31

Ethernet Unit Function Guide
Reference
Monitoring PLC Changes and Sending Equipment Status to the Operator by E-mail
Operation
Ethernet
Router
Mail
communications
SECTION 6 FINS Communications
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.
Intranet
Production line A
Router
Connecting through multiple segments:
FINS message
communications
Use FINS/TCP.
Production line B
Ethernet Unit
PLC
FINS message
communications
Connecting within the same segment:
Use FINS/UDP.
Section 1-1
Ethernet Unit
Ethernet Unit
PLC
Memory Card
5