摘要
IEC 61131-3是可编程序控制器(PLC)的编程语言的标准,功能块是该标准所规定的图形化编程语言功能块图的主要软件元素。本文通过一个工程实例介绍了功能块的设计、开发和使用,展现了功能块乃至IEC 61131-3标准的优点。
IEC 61131-3 standard is the standard of programming language for programmable logic controller, and function block is the key software element for the graphical programming language function block diagram included in the IEC 61131-3 standard. The design, development and usage of a function block were introduced systematically, meanwhile demonstrating some benefits of function block even the IEC 61131-3 standard.
出处
《低压电器》
北大核心
2007年第15期56-58,共3页
Low Voltage Apparatus
关键词
IEC
61131-3标准
功能块
功能块图
统一建模语言
IEC 61131-3 standard
function block （FB）
function block diagram
unified modeling language （UML）
