Different Ways to Declare a Library in a Project

Overview

There are different ways to declare a library in a project. The libraries are automatically declared when adding the following:

oa controller:

oIEC 61131 basic libraries: Standard and Util libraries

oController PLCSystem library

oOther libraries to manage embedded controller features

ospecific controller features

oa fieldbus manager

oa fieldbus device

Some libraries must be added manually.

NOTE: Some functions and function blocks are not intended to be used within your program, but may be required by the system or by a device. You should use only functions and function blocks that are documented as program applicable, or functions or function blocks that you have thoroughly tested with your application.