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7 - Alarms
7 Alarms
7�1 Alarm pages
The purpose of alarms is to alert users when something
goes wrong in the system. If there is an active alarm, the
red LED on the WMPro lights up, and the alarm frame at
the top of the web page turns red if the number of alarms
is greater than zero. If alarms occur while a system is run-
ning, they need to attract our attention. That is why the
rst page in the View menu is the Active alarms page.
The View menu also contains a page called Alarm and
event log, where you can see a history of alarms showing
when they occurred, when they were acknowledged and
when they were cleared.
The log also contains errors, events and messages. An
error is a kind of internal alarm aecting the WMPro itself
rather than the wider installation. Events are entries indi-
cating that something (not an alarm) has happened in the
device. Examples of entries include device restarts, soft-
ware updates, etc. Messages can be script-generated.
In the Settings menu, the Alarms section lists all the alarms
in the device (the maximum number of alarms is 50). In
this section, you can change alarm settings or create new
alarms. Some alarms are created automatically when you
set up a controller, but you will usually need to create your
own alarms.
7�2 Alarm types
Alarms can work in three dierent ways in the WMPro.
7�2�1 Automatic reset, no acknowledge
Automatic reset, no acknowledge means there is no need for a user or operator to acknowledge the
alarm. The alarm is cleared when the error is no longer active as dened in the alarm conditions. You
can specify delay and hysteresis values in the conditions.
You can also add "A-alarm" or "B-alarm" to the email that is sent when the alarm is triggered. This
allows recipients to sort the alarms.
Alarm LEDs
There is a red ALARM LED on the
front of the WMPro. It lights up if
at least one alarm is active. If it is
ashing, there are alarms waiting
to be acknowledged.
Alarms are central to the way the WMPro works. This section explains how you can view alarms
and the alarm history, and how to acknowledge alarms. You will also nd out about the various
types of alarm and how you can send email notications when an alarm is triggered. You will also
learn how to change alarm settings.
Alarm frame
There is an alarm frame in the mid-
dle of the top line of the WMPro
web page, showing the number of
active alarms in the device and the
system time. You can change the
update frequency of the frame in
the Presentation tab of the System
menu. If there are no active alarms,
the frame appears in green.
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