3 PROGRAM ORGANIZATION UNIT (POU)
11
3
3 PROGRAM ORGANIZATION UNIT (POU)
The POU includes the following types.
• Function
• Function block
The processing of each POU can be described in a programming language according to the control. POUs are called from a
program block, and then executed.
A structured program is a program created by components. Processes in lower levels of hierarchical program
are divided to several components according to their processing information and functions.
Each component is designed to have a high degree of independence for easy addition and replacement.
The following shows examples of the process that would be ideal to be structured.
• A process that is used repeatedly in a program
• A process that can be divided into functions
This chapter describes two types of POUs using labels.
Devices can also be used in the program of a function or function block. For details on devices, refer to the following.
User's manual (Application)
Project
Program file
POU folder
POU
Program block
POU
Function block
POU
Function
Use
To Next Page
Loading...
