plc未来发展趋势------外文翻译 摘自《可编程控制器在过程自动化中的应用》.doc

摘要：目前，控制问题解决了各种各样的技术操作部分：电子，液压，气动和机械。函数- nality，可靠性和控制系统的价格是阻止开发的理由。本文集中于可编程逻辑控制器（PLC），以五年在这方面的发展经验为基础。成功的解决方案是问题重点。具体的硬件，控制器编程的问题、数据/信号的交换和人机界面进行审议。实际的建议，需要根据具体的方法来开发可编程控制器。对于可腀@鱿值拇砦蠛途妫岢隹梢园镏苊夥椒āⅫbr>关键词：可编程控制器、自动化、自动化系统、过程自动化
1引言
现代的机器包括电子和机械两部分。平衡两方面因素，初步规划和方案选择对最终结果起着至关重要的作用。
在控制方法的选择，继电器，专用设备，可编程逻辑控制器（PLC）和电子制造技术的发展。这篇文章是基于PLC集中- S的经验，拥有超过5年的PLC - S的实际工作经验中收集的。双方强弱，积极和消极的做法进行了讨论。建议使用可编程控制器帮助解决。
Abstract: Nowadays, control problems are solved using operating components from a wide variety of technologies: electronics, hydraulics, pneumatics and mechanics. Functio-nality, reliability and price of the controlled system are deter-mined by the quality of the solution made.
The paper concentrates on practical use of programmable logic controllers (PLC) that is based on the five years project development experience in this area. Successful solutions and problems are under focus.
Specific hardware, controller programming problems, data/signals exchange and human machine interfaces are considered. As a result the method for selecting programmable controllers according to specific needs is developed. Practical suggestions, possible hazards and warnings are proposed that could help to avoid mistakes.
Key words: programmable controllers, PLC, automation, automation systems, process automation.