PI Web Services Overview
PI Web Services consists of a web service that accesses PI System data (PI and AF) in response to web service queries. It enables the retrieval of data types supported by the PI System, which include data related to PI Points, PI AF Elements, and PI Event Frames. The web service is a Windows Communication Foundation (WCF) service that allows web services clients to access PI System data through Simple Object Access Protocol (SOAP). PI Web Services supports writing data to the PI System as well as retrieval of standard PI summary calculations.
PI Web Services is designed for lightweight, firewall-friendly data access over LAN or WAN and facilitates 2 main scenarios:
- Development of customer thick or thin/web applications, in various programming languages and on various operating systems.
- Integration of PI System data within other Enterprise Business Systems, such as ERPs and data orchestration engines.