semaphore TBOX LT2-530 Series, User Manual, Page: 93 / 197

Version : 1.09 93
10.5.1. Alarm Acknowledgment through POP3
Introduction
With
TB
OX
LT2
sending a SMS through a GSM, it is possible to acknowledge the alarm by sending back a
SMS to
TB
OX
LT2
In some countries, SMS can only be sent through email. A POP3 connection can then be used to
acknowledge the alarm.
Sequence of connections
1.
TB
OX
LT2
sends an e-mail. The alarm condition has been configured with the option "POP3 Ack".
It is important you have a dedicated e-mail account for your RTU. The data sent by e-mail can be a
report or a message.
2. The recipient retrieves its e-mail. The field "Subject" of the e-mail is preceded with internal data:
RTU Id (I)
Alarm index (A)
Example of message: #I460000020107,A00004# MyTBox: PUMP stopped
3. The user sends back the e-mail. Typically, he will make a "Reply" and sends back the e-mail to the
address as specified in point 1. above, in the SMTP server
4.
TB
OX
LT2
generates a POP3 connection (through alarm condition) and checks the presence of e-
mail with specific data in field "Subject". With this data,
TB
OX
LT2
knows which alarm for which
RTU it can acknowledge.
The POP3 connections have to be handled into your process and can be checked from System
Variables (see below)
Illustration with a TBox MS