Chapter 3 PPG Application Design
Overview
This chapter provides an overview of the process of designing and building an application using PPG. The following topics are covered:
•Designing the Application on page 15.
•Application Output on page 15.
•Application Structure on page 16
•Node Types and the
•Creating Function Nodes on page 18
•Creating Operation Nodes on page 18
•Actual vs. Virtual Display on page 19.
•Defining Program Flow on page 20.
•Sending and Receiving Files on page 20.
•Additional Resources on page 21.
Designing the Application
Application Output
Before you begin to design an application, you must decide how the resulting data will be handled. You probably have a good idea of how you would like the collected data to be output. The result of the application is usually a file of collected data, so you must determine the purpose of the file and how it is orga- nized; this determines what data is collected and how. You may want to examine portions of collected data or work with data files downloaded into the PT40. After you have determined the data output format, you can begin to define the program steps and flow.
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