User manual
Ethernet Communication Services
33002479 06 07/2008 91
Electronic Mail Notification Service
General The electronic mail notification service allows controller-based projects to report 
alarms or events. The automation controller monitors the system and can 
automatically create an electronic mail message alert with data, alarms, and/or 
events. Mail recipients can be either local or remote.
z Based on predefined events or conditions, messages are created using the 
MSTR function block.
z The email message is constructed from predefined headers plus variables and 
text (a maximum of 238 bytes). This message is sent directly from the automation 
system to the local email server.
z Mail headers contain common predefined items—recipient list, sender name, and 
subject. These items can be updated by an authorized administrator.
Mail Service 
Client
The NOE 771 x1 and 140 CPU 651 x0 modules include an SMTP client. When the 
module receives a specific request from the controller, the module sends an email 
message to the mail server. 
CPS CPU NOE
MSTR
OK or NOK
SMTP
Client
Email
Ethernet
SMTP
Server










