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12. Alarms
12.1. Introduction
Alarm module of
TB
OX
LT2
is the gate to the outside world.
An alarm consists in a communication event, not only for sending warning messages but to establish a
connection, like we will see.
Via alarms, you are able to send SMS message to Mobile phone, send e-mail, send files to a FTP site, to
dial another
TB
OX
or a SCADA, …
Alarms can be used also to send historical data (datalogging) on regular base using e-mail or FTP. The
historical data is sent as the attached file of a report, developed using Report Studio.
TView, the data aggregator software can then be used to collect data from a mail box or a FTP site.
The initiation of alarms in the
TB
OX
LT2
relies on the variation of digital or analog Tags.
For example, an intrusion contact or a flow level generates a call.
The three main items to create an alarm:

The condition: a changing in a Tag.

The recipient: to whom the data is sent.

The message (or report): information to send to the recipient.
The Alarm stack
Each new alarm is immediately entered into a 32-alarms internal queue (adjustable) and processed,
according to the availability of communication ports required and its severity level. Alarms are generated
one by one.
The alarm queue represents the alarms stack: if several alarms happen at the same time or if a
communication port is not available when the alarm happens.
The Event stack (or Alarms table)
The Events stack, gives information about alarms status (Recipient - Started – Stopped – Acknowledged).
The Events stack (also called Alarms table) is discussed in chapter 12.8
To access the definition of Conditions, click the folder ‘Alarms’ in the Project workspace and select
‘Conditions’.
According to the Tag you select, you define a digital alarm condition or an analog alarm condition.