Configuration User Manual

Rockwell Automation Publication ENET-UM001L-EN-P - March 2014 89
Send Email Chapter 7
Send Email via a Controller-
initiated Message
Instruction
A Logix controller can send a generic CIP message instruction to the EtherNet/
IP communication module that instructs the module to send an email message to
a SMTP mail relay server using the standard SMTP protocol. This automatically
communicates controller data and application conditions to appropriate
personnel.
Some mail relay servers require a domain name be provided during the initial
handshake of the SMTP session. For these mail relay servers, specify a domain
name when configuring the EtherNet/IP communication module’s network
settings.
For additional information, see
Configure an EtherNet/IP Communication
Module to Operate on the Network on page 17.
Create String Tags
You need three controller-scoped string tags. Each tag performs one of
these functions:
• Identifies the mail server
• Contains the email text
• Contains the status of the email transmission
The default STRING data type supports up to 82 characters. In most cases, this
is sufficient to contain the address of the mail server. For example, to create tag
EmailConfigstring of type STRING, follow these steps.
1. Click in the Value column of the Controller Tags dialog box.
IMPORTANT
Be careful to write the ladder logic to be sure the MSG instructions are not
continuously triggered to send email messages.
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