石家庄科技信息职业学院毕 业 论 文题目: 基于 plc 的压力过程控制系统设计学 号:姓 名:专业班级:指导教师:完成日期:基于 plc 的压力过程控制系统设计摘要:自二十世纪六十年代美国推出可编程逻辑控制器(Programmable ontroller,PLC)取代传统继电器控制装置以来,PLC得到了快速发展,在世界各地得到了广泛应用。同时,PLC的功能也不断完善。随着计算机技术、信号处理技术、控制技术网络技术的不断发展和用户需求的不断提高,PLC在开关量处理的基础上增加了模拟量处理和运动控制等功能。今天的PLC不再局限于逻辑控制,在运动控制、过程控制等领域也发挥着十分重要的作用。目前,PLC在国内外已广泛应用于钢铁、石油、化工、电力、建材、机械制造、汽车、轻纺、交通运输、环保及文化娱乐等各个行业。同时,计算机监控系统是采用集中监测、集中控制、集中显示、集中管理、集中保存的系统,融合了较先进的自动化技术、计算机技术、通讯技术、故障诊断技术和软件技术,广泛应用在化工、供暖、机械、供水、水处理等多个领域,在工业生产中发挥越来越显著的作用。关键词: MCGS 软件编程 FX2N-4DA 模拟特殊模块 plcABSTRACT : Since the 1960s, was launched in the USAprogrammable logic controllerto replace traditional relay control device since, PLC obtained fast development, In theworld can be widely used. Meanwhile, PLC function also continuously improved. Alongwith puter technology, the signal processing technology, control work technology unceasing development and user demand unceasing enhancement,PLC in the switch quantity processing based on increased analogue processing andmotion control etc. Function. Meanwhile, PLC function also continuously 's PLC no longer bureau be confined to logic control, motion control, process controletc also plays a very important present, the PLC at home and abroad have been used widely steel, petroleum,chemical industry, electric power, building materials, machinery manufacturing, automotive,textile, transportation, environmental protection, and cultural entertainment the same time, computer monitoring system is to adopt the centralized monitoring,centralized control, centralized display, centralized management, the concentratedpreservation system, shirt-sleeve relatively advanced automation technology, computertechnology, communication technology, fault diagnosis technology and softwaretechnology, widely used in chemical industry, heating, machinery, water supply, watertreatment etc, in the course of industrial production plays more and more important WORDS:The MCGS software programming FX2N - 4DA
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