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Mail Receive Function Overview Section 3-1
3-1 Mail Receive Function Overview
3-1-1 Introduction
The mail receive function performs the following functions using e-mails sent
to the Ethernet Unit.
1,2,3... 1. The user can enter a command in the e-mail and send that e-mail to the
Ethernet Unit.
2. A command written in the e-mail subject can be executed when the e-mail
is received. (The Ethernet Unit periodically checks the mail server to de-
termine whether mail has been delivered.)
3. The Ethernet Unit is equipped with a function that sends a reply e-mail in-
dicating the results of the command execution.
The following protection settings can be used with e-mail reception.
• Receive e-mail from specified addresses only.
• Restrict remote e-mail commands.
• Receive e-mails with specified filename extensions only.
If an e-mail does not conform to the protection settings, the e-mail command
will be discarded without being processed.
Advantages The mail receive function can be used to perform a variety of operations in the
CPU Unit (such as reading/writing I/O memory, changing the operating mode,
and executing file memory operations) through the internet or intranet without
acquiring a fixed global address for the Ethernet Unit.
Description
Configuration of the Mail
Receive Function
The user sends specific remote mail commands to the Ethernet Unit's e-mail
address specified in the Unit Setup.
IOM Read
D_0
5
DATA0.CSV
E-mail
Router
E-mail
Receives e-mail periodically.
Ethernet
Ethernet Unit
Command entered.
Example:
Reply e-mail
Attached file:
DATA0.CSV
Internet or
intranet
POP3 server
User
Sends mail.
Command
execution
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