外文翻譯--可編程控制器-其他專業(yè)(已修改)
2025-02-04 10:01 本頁面
【正文】 電子與信息工程學(xué)院 本科畢業(yè)論文 (設(shè)計(jì) ) 外 文 文 獻(xiàn) 翻 譯 譯文題目： Programmable logic controllers Hardware, software architecture 學(xué)生姓名： 吳凡 專 業(yè)： 電氣工程及其自動化 指導(dǎo)教師： 李東京 2021 年 12 月 Programmable logic controllers: Hardware, software architecture Many respects, the architecture of the programmable logic controller (PLC) resembles a generalpurpose puter with specialized input/output (I/O) modules. However, some important characteristics distinguish a PLC from a generalpurpose puter. Most important, a PLC is much more reliable, designed for a mean time between failures measured in years. Second, a PLC can be placed in an industrial environment with its substantial amount of electrical noise, vibration, extreme temperatures, and humidity. Third, PLCs are easily maintained by plant technicians. Basic PLC hardware architecture The basic architecture of a PLC consists of main ponentsthe processor module, the power supply, and the I/O modules. The processor module consists of the central processing unit (CPU) and memory. In addition to a microprocessor, the CPU also contains at least an interface to a programming device and may contain interfaces to remote I/O and other munication works. The power supply is usually a separate module, and the I/O modules are separate from the processor. The types of I/O modules include discrete (on/off), analog (co
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