Introducing the Electronic Mail Notification Service

Introduction

The electronic mail notification service allows controller-based projects to report alarms or events. The controller monitors the system and dynamically creates an electronic mail message to alert local or remote users.

Mail Service Client

The BMX P34 20x0 processors include an SMTP client. When the module receives a specific request from the project, the module sends an email message to the mail server on the network.

Mail System Types

SMTP provides two mechanisms for the transmission of email messages—direct connection and a relay system:

Mechanism	Condition	Result
Direct connection	Sender and receiver are connected to the same transport service.	Email messages are sent to host.
Relay system	Sender and receiver are connected to different transport services.	Email messages are relayed from one server to another. The SMTP server must be supplied with the address of both the destination host and the destination mailbox.

Operating Modes and Sending Requests

Because the application program sends the email request, a controller cannot send an email message either while in the stopped mode or while downloading a project. As soon as the controller is in run mode, the function block sends a request during the first project scan.

Diagnostic counters are reset to 0 after either a power-up, a project download, or a reconfiguration of the electronic mail notification service.