关键词:
自动化
控制与计算机技术
控制系统
数据处理
定义
人类工效学
功能模块
功能
图形数据处理
信息技术
过程自动化
过程控制
可编程控制器
程序控制系统
程序设计语言
语义学
贮存程序的
语法
标准号:
BS EN 61131-3-2013
摘要:
IEC 61131-3:2013 specifies the syntax and semantics of a unified suite of programming languages for programmable controllers (PCs). This suite consists of two textual languages, Instruction List (IL) and Structured Text (ST), and two graphical languages, Ladder Diagram (LD) and Function Block Diagram (FBD). This third edition cancels and replaces the second edition, published in 2003 and constitutes a technical revision. It includes the following significant technical changes: It is a compatible extension of the second edition. The main extensions are new data types and conversion functions, references, name spaces and the object oriented features of classes and function blocks.