Function Groups

The PI-API is divided into sections based on the nature of each function's activities. For example, all functions which access or modify the Archive in some fashion are prefixed by a piar_, while all functions which access or modify the Point Database are prefixed by a pipt_.

The table shown below lists the functional units within the PI API:

Unit

Description

PIAR

Archive Functions

PIBA

PI Batch Functions

PIEL

Event Log Functions

PILG

Login Functions andMessage Log (Home and Net Node) Functions / Login connections and user dialogs (MSW and NT only)

PIPT

Point Database Functions

PISN

Snapshot Functions

PITM

Time Functions

PIUT

Utility Functions

Enabling Operational Intelligence