What is an Alarm? SECTION 8 Alarms
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SECTION 8
Alarms
This chapter describes CX-Supervisor alarms and the procedures associated
with the creation, amendment and removal of alarms using the Alarm Editing
facility. The use of alarms during the running of a project is also described.
8-1 What is an Alarm?
Alarms provide notification of a problem during the execution of an application
in runtime. Alarms are defined in the development environment and monitored
in the runtime environment. Alarms range from incidental to catastrophic in
nature.
In runtime, the occurrence of an alarm condition, and any subsequent change
of state, is recorded in a log file known as the Alarm History log.
An operator is alerted to an alarm condition by means of an Alarm
Acknowledge dialog box, which may also be accompanied by a warning
sound. A list of current alarms is also maintained.
Individual alarms are defined in the development environment using the Alarm
Editor. General alarm settings are controlled in the development environment
using the Alarm Settings dialog box.
The Alarm Object (refer to chapter 4, Objects) is a graphical object which can
be configured to display alarm messages for certain groups of alarms and thus
provides a convenient way of filtering alarm messages.
Alarm definitions are made and modified using the Alarm Editor. To use the
Alarm Editor, CX-Supervisor must currently have a project open. If no project
is currently open, either select Open Project from the Project menu to open a
previously saved project, or select New Project from the Project menu to
create a new project.
Facilities exist to add an alarm, modify an existing alarm, copy an alarm,
remove an existing alarm following confirmation, and display the alarm list in
name, type or description order.
8-2 Alarm Settings
To open the Alarm Settings dialog box, select the button from the Alarm
Editor toolbar. The dialog box opens.
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