It is the goal of every programmer to comprehensively improve the quality of the program,improve the programming efficiency,and make the program have good readability,reliability,maintainability and good structure.IEC61131-3 is a standardized programming language for industrial control launched by the International Electrotechnical Commission(IEC)in 1999.It has the characteristics of openness,portability,structured programming and structured data,and strong error detection and correction capabilities.,suitable for plc programming.Using structured programming,it is convenient to construct programs(especially complex programs),multi-person design,debugging and software management.Although the idea of software engineering has been accepted by the vast majority of programmers,it is not easy to transform this idea into conscious behavior in the process of software development.
全面提高程序的质量,提高编程效率,使程序具有良好的可读性、可靠性、可维护性以及良好的结构,是每位程序设计者的目标。IEC61131-3是国际电工委员会(IEC)于1999年推出的用于工业控制领域的标准化编程语言,具有开放性、可移植性、结构化编程和结构化数据、检错和纠错能力强等特点,适用于plc编程。采用结构化程序设计,便于构造程序(尤其是复杂的程序)、多人设计,调试以及软件管理。虽然软件工程的思想已被绝大部分程序员所接受,但要将这种思想转化为软件开发过程中的自觉行为却不是一件很容易的事。
SORENSEN KFL40-01UC POWER SUPPLY (79)
The Road to Super Bowl XVII Parry D. Sorensen (editor)
Sorensen Q NOBATRON QSB6-8 variable power supply 5-10V
Sorensen PIC1T160-30T/M9A Interface Controller IEEE488
Anders Sorensen Complete 4-page Goofy Story