An authorized administrator may use the SMTP configuration web page to:
Message Creation and Delivery
A user-defined event or condition triggers the
SEND_REQ block to create a message. Each message uses one of three user-defined headers. Each message sent from the controller can contain text and variable information (up to a maximum of 238 bytes).
The project selects the appropriate header. Each header contains:
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sender name
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list of recipients
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subject
An authorized administrator can define and update the text and variable information via an embedded SMTP Configuration web page. Define mail headers to indicate different levels of importance. For example:
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header 1 could be Urgent problem reported by PLC 10
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header 2 could be Notification from substation 10
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header 3 could be Info message from water system
Listing different recipients in each of the three headers assures that information flows quickly to the right recipients. The project adds pertinent information such as the specific device, process or location. This information is added to the body of the mail message. Then the complete message is sent to an electronic mail server for distribution to recipients.
Recipients may be engineers, managers or process owners.
Security (Authentication)
An optional login (system ID) and password can be used to authenticate the connection to the SMTP mail server. The SMTP-supported authentication method is LOGIN.
The SMTP diagnostic web page displays the status of the service. Diagnostic information is also available for remote management using the SNMP network management standard.
