V2EX ladder logic

Ladder Logic

释义 Definition

Ladder logic(梯形图逻辑/梯形逻辑):一种用于可编程逻辑控制器(PLC)的图形化编程语言,把控制电路表示成类似“梯子”的线路图(由“横档/梯级 rungs”组成),常用于工业自动化中的继电器控制、联锁、启停回路等。

发音 Pronunciation (IPA)

/ldr ldk/

例句 Examples

The technician wrote a simple ladder logic program to start the motor.
技术员写了一个简单的梯形图程序来启动电机。

In modern factories, ladder logic is often combined with timers, counters, and safety interlocks to control complex production lines.
在现代工厂里,梯形图逻辑常与定时器、计数器和安全联锁配合,用来控制复杂的生产线。

词源 Etymology

“Ladder”意为“梯子”,“logic”意为“逻辑”。该术语源于其图形表示形式:左右两条“母线”像梯子的两侧,中间一条条“梯级”像横档,用来表达类似继电器控制电路的逻辑关系。它之所以流行,也与早期工业电气人员熟悉继电器线路图有关,学习成本较低。

相关词 Related Words

文学与著作中的用例 Literary / Notable Works

  • Frank D. Petruzella, Programmable Logic Controllers(多版教材,常用“ladder logic/ladder diagram”讲解PLC编程)
  • Hugh Jack, Automating Manufacturing Systems with PLCs(课程型教材,包含大量梯形图示例)
  • IEC 61131-3(工业控制编程语言国际标准,收录并规范“Ladder Diagram(LD)”,与ladder logic密切相关)
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