The plant broke down and bought ethernet modules (with RJ45 connector that screws to the terminal strip on the rear) for our late model Honeywell UDC controllers.  They installed easily.

Honeywell's Process Instrument Explorer software is ESSENTIAL for setup; the controller's IP address and the entire email setup can only be configured via PIE (choice of interface: IR, RS-485 or ethernet), local keyboard/keypad entry is not an option.

I used the Argosoft freeware SMTP mail server on our I&M office PC to be the mail server to which the emails get sent, at least until the concept proves itself, because IT battles aren't worth the effort.  Honeywell has an excellent app note that spells out the steps needed to get Argosoft, the controller and Outlook Express configured to do email on alarm.

The controller can only email-on-alarm on one alarm condition, regardless of how many alarms are configured in the controller.

Testing showed that the controller can not do rapid emails in succession, like a an alarm occurring, resetting and re-occuring all within a minute.  Only the first alarm will be sent as an email alarm. 

We got 7 controllers, a mix of UDC 2500 and 3200's setup for email on alarm.

The alarm is the Thermcouple warning, part of the thermocouple health monitoring that looks at the resistance of the T/C and warns when the resistance gets too high.

Budd.