In OMNITREND Web there is an alarm element that can generate various lists depending on the setting. It allows the output of detailed data of one or more measurement tasks in a state of alarm, warning or prewarning. It can comprise individual measurement tasks, machines, machine trains or even entire locations. Used in the link (pipe) mode of a sequence, an alarm element in a template can serve as a prefilter (pipe output) for the subsequent template (pipe input).
An alarm element of the type "alarm (classic)" is an alarm table listing the time and date of the event, of the measurement value type, of the value with unit, of the alarm threshold and of other possible data that are defined in the "Display" selection field.
An alarm element of the type "alarm list" is a continuous list outputting all measurement tasks in an alarm state, with date/time and complete tree path from a certain machine tree node.
An alarm element of the type "Alarm status list" is similar to the "alarm list". Differences concern primarily the tabular appearance. Similarly, in the alarm status list the alarm class and alarm code (Alarm, Warn or Prewarn) are displayed. In addition, this type offers other setting options, such as adding new columns.
An alarm element of the type "survey list (last measurement)" lists the latest alarms of the last measurement.
An alarm element of the type "deviation list (last measurement)" lists the latest alarms of the last measurement with specification of the penultimate value.
An alarm element of the type "Alarm list spectrum" considers only alarms in spectra or trending tasks. The spectrum occurring in the alarm is displayed in a diagram. Below the diagram the corresponding alarms are listed in tabular form. If the alarm contains more than one alarm, all these spectra are displayed as diagram/table pairs in the alarm element.
The alarm test is executed as of the selected branch in the machine tree for all subjacent measurement points or measurement tasks. Depending on the database size this operation can also take several minutes.
You can define the alarm list type in the properties dialog box.
In selecting the data source you can select an arbitrary branch in the machine tree. Instructions on selecting the data source are given in the section on "Selecting a data source".
Use the View dialog box of the particular alarm list type to set the columns, section breaks, alarm classes and general settings of a report.
The columns of the event list can be set manually. For this purpose there is a table with all available columns in the tab "Report columns". Report columns marked as visible are displayed in the report. Again, you have the possibility of changing the order of the columns by means of the arrow buttons. The column headings are specified. You can assign user-defined names, however, by using the "Rename" button. If the heading text is to remain empty, use the "Empty" button.
Use the "Section break" tab to specify where the displayed table is to be interrupted. Section breaks are possible on the location, machine train, machine and measurement point levels.
In the "Alarm class" tab you can define alarms of different levels of severity, severity colors are depicted in the alarm list and allow a very fast and intuitive survey of the machines.
The "General" tab offers general type-dependent settings. For example, the height of the elements diagram can be defined in the Alarm list spectrum.
The settings for font and border are the same as for the table element (->see section on "Table font and border").
The filter settings were already described in the section on "Settings" (see also alarm filter).