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Metadata

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For each variable it is possible to specify additional metadata, which describes it in more detail. This metadata is optional and is useful to better characterize the variables and improve the creation and use of dashboards and data export. The available fields are explained below.

Metadata

Name and description

The name is shown in the graphs and lists of variables. The description is optional and is shown as a tooltip when hovering over the variable name. Both can be up to 45 characters long.

Additional parent groups

Optional, for advanced users. It is possible to specify one or more additional parent assets for the variable. By default each variable is a child of the asset data source it belongs to. By specifying additional parent assets, the variable will also be associated with them. This allows you to organize the variables more flexibly and group related variables in one place even if they are acquired through different physical devices.

Unit of measure

Optional. Specify the unit of measure (without spaces). It is shown in the graphs and tables next to the variable value.

Tags

Optional, for advanced users. Used in the generation of dynamic templates to classify variables.

Decimal places

Optional. Specifies the number of decimal places to show in graphs and tables. If not specified, all decimal places are shown.

Minimum and Maximum

Optional. Specifies the start and end of the variable scale. Used in some graphical widgets to define the range of values shown.

Alarm

Specifies whether the variable is an alarm variable. For alarm variables, it is possible to configure the reception of notifications upon activation.

You can specify:

  • Name. Usually it is the same as the variable name. In case the logic of the variable is reversed, it is possible to specify a different name for the alarm (e.g. variable name: "Operation OK", alarm name: "Operation NOT OK"). This name will be shown in notifications.
  • Description. Optional, as for Name
  • Level: allows you to indicate the severity level of the alarm. The available levels are 1 (not severe) and 2 (severe). The level determines the graphical rendering of the alarm in dashboards and notifications.
  • Alarm logic: allows you to specify whether the alarm is considered active if the variable value is truthy (1, true, numbers > 0, etc) or falsy (0, false).
  • Acknoledgeable: if enabled, the alarm can be manually acknowledged by the user, to keep track of already examined alarms.

Alarms