Effect of facets on point actions

For some points with actions, facets also affect availability in the point’s action (command) menu.

  • EnumWritable

    Upon an override or emergency action, a secondary drop-down selection lists the possible enum values (in its range), using display tag text. This list appears ordered top-to-bottom by the tag associated with each ordinal, lowest-to-highest.

  • NumericWritable

    Upon an override or emergency action, an entry window permits a value only between the facets min and max values, inclusive. By default, these facets values for numeric-type points are min= -inf and max= +inf (no effective range checking for an action).

    For example, you could use this facet’s feature with a NumericWritable that sets a temperature control setpoint, by setting its facets min= 65 and max=85. After saving this change, any override or emergency action issued to that NumericWritable would need to fall within this range. Otherwise, a user would see a message showing the acceptable range, and be prompted to try again.

    Note: Facets min and max values do not affect any received input values or proxied data, only what can be issued via an action.

  • Maximum override duration (for any writable point type)

    Using facets you can also limit the maximum override duration of manual (level 8) override action invoked on writable control points. By default, the manual override of a writable point has no duration limits.