Tabs on Accumulator Forms

Each Accumulator Form has a combination of these tabs:

• Identification—Use the fields on this tab to configure the Identification properties (see Defining Identification Details).

• Location—Use to specify the item's geographical coordinates. (You need only configure the properties on this tab if your system uses Geo SCADA Expert's Geographical Location features.)

• User Methods—Use the fields on this tab to define any custom pick actions (‘methods’) for an Accumulator (see Using the User Methods Tab to Define Custom Actions).
• Historic—Use the fields on this tab to specify any historic storage settings for an Accumulator. The properties on this tab are identical to those on the Historic tab of points that support historic storage (see Defining Historic Details for a Point in the Geo SCADA Expert Guide to Core Point Configuration).

  Historic values provide a record of the Accumulator’s data and are of particular use when monitoring the value of an Accumulator over time.

  The Historic tab is only included on the relevant configuration Forms when the Historic Data feature is enabled on the server. The feature enables Geo SCADA Expert to store data historically (see Historic Data Storage Settings).

  If Geo SCADA Expert is to store an Accumulator’s data historically and is to compress that historic data, be aware that Geo SCADA Expert will not compress any Accumulator Updates to which Historic Data Compression Settings do not Apply.

  By design, the setting of the Allow historic data to be deleted check box in the Historic Data section of the Server Configuration Tool has no impact on a user's ability to delete the whole of a Point or Accumulator's historic data. Users with the relevant access and permissions will still be able to clear the Enabled check box on the Historic tab of a Point or Accumulator's configuration Form to do this.

• Reset—Use the fields on this tab to:
  • Specify whether an Accumulator Continuously Sends Timed Reports and Resets its Value
  • Specify an Accumulator’s Source
  • Define the Appearance of an Accumulator’s Values
  • Specify the Frequency with which Geo SCADA Expert Stores Timed Report Values
  • Specify the Period over which an Accumulator’s Value is Calculated
  • Specify the Data that Geo SCADA Expert Stores for an Accumulator.
• State—Applicable to Accumulators other than Integrator, Maximum, and Minimum. Use the fields on this tab to specify when an Accumulator value is to increment. The fields on the tab vary—depending on the type of Accumulator, you can use the fields to:
  • Define When the Value of a Boolean Counter is to Increment
  • Define When the Source of a Delta Accumulator has Reset
  • Define the Type of Calculation that a Mean Accumulator Uses
  • Specify when a Rate of Change Accumulator Value Increments
  • Specify when a Runtime Accumulator Value Increments.