Algorithm library reference

The pre-defined algorithms documented in the following topics come with the software. You may be able to use one or more of them without modification, or as a reference when creating your own custom algorithms.
Each algorithm description contains:
  • a brief description of what the algorithm does
  • a flowchart view of the algorithm logic
  • an image of the Wire Sheet for each algorithm
  • a table that explains what each logic block is doing

To use an algorithm, add tag and tag groups from the analytics-lib palette’s Analytics dictionary to the station, apply the tags as a data model to the necessary components in the station, then drag an algorithm to a logic Wire Sheet and configure its object properties for your specific application.

You could use an algorithm with an analytic alert that has either a value or trend request. To process a value request or trend request, you use an algorithm with a control point on an analytic proxy extension. The control point might have an alarm extension for generating alarm records.

To help visualize when a fault condition occurred in the past without generating an alarm record, you can use an algorithm in an analytic web chart or table.

Some of the explanations in this document may assume that the analytic request is going to be a trend request, but it might also be a value request.