AB7007

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选择深圳长欣,选择放心,售后无忧
大量现货,当天顺丰发货!
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电话:18150087953 / 18005022138

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描述

AB7007

确实不无道理。数字通讯是一种趋势,它代表了技术进步,是任何人阻挡不了的。双向数字通信现场总线信号制以及由它而产生的巨大的推动力,加速现场装置与控制仪表的变革,开发出越来越多的功能完善的数字智能现场装置。这些都是DCS系统所不具备的,而由此产生的优越性以及给火电厂的设计、配置、组态、运行、维护、管理等方面带来的效益也是DCS系统所不及的。再则,FCS是由DCS以及PLC发展而来,它保留了DCS的特点,或者说FCS吸收了DCS多年开发研究以及现场实践的经验,当然也包括教训。由此而得出结论,“FCS将取代DCS”,似乎也是顺理成章之事。
同时我们也应看到,DCS系统发展也近30年,在火电厂的应用如此广泛。它的设计思想、组态配置、功能匹配等已达十分完善的程度(当然,DCS也存在进一步发展的需求,例如高级软件开发,以满足信息集成的要求),已渗透到火电厂控制系统的各个领域,并且在FCS系统中也有些体现。从这个角度来看,DCS系统似乎不能说从此消亡。再则,从前面的章节叙述中已经谈到,对那些FCS系统不能充分发挥其特点及优越性的领域,DCS系统仍有用武之地。
我们似乎没有必要在文字上做过多的争论,一定要强调谁取代谁。正如目前的DCS与新型的PLC,由于多年的开发研究,在各自保留自身原有的特点外,又相互补充,形成新的系统,现在的DCS已不是当初的DCS,同样如此,新型的PLC也不是开发初期的PLC。我们能够说是DCS取代了PLC或者说是PLC取代了DCS,显然都是不合适的。

产品承诺:
保 证 全新原装进口,
保 证 安全准时发货,
保 证售后服务质量,
优势价格,大量现货。

主营DCS系统配件
机器人系统配件
大型伺服系统配件
品牌:ABB   ,AB  ,GE,FOXBORO,本特利,英维思,伍德沃德,西屋,瑞恩,施耐德,西门子,摩托罗拉,安川。力士乐。ACSO,横河等进口品牌。 专业销售进口DCS  PLC系统备件模块
Triconex Siemens Yaskawa ABB GE Ovation AB Foxboro Motorola Schneider XYCOM KUKA
  专业销售进口DCS  PLC系统备件模块 15天包退换 一年质保 大量现货  国内实力库存商家

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HP 4274 Multi-Frequency LCR Meter

GPI HARMONY COMPACTOR 700SS POWER PACKER

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DIATEST-FB DIATEST SPLIT BALL PROBE SET

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MILES 4553 TISSUE TEK CRYOSTAT

HEWLETT PACKARD 8091A DELAY GENERATOR

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专业销售进口DCS  PLC系统备件模块

PLC模块,可编程控制器,CPU模块,IO模块,AI模块,通讯模块。AB/施耐德/ABB/GE/本特利/西屋/英维斯/霍尼韦尔/黑马/FU克斯波罗

15天包退换 一年质保 大量现货  国内实力库存商家


选择深圳长欣,选择放心,售后无忧大量现货,当天顺丰发货!
主营:本特利,英维思,伍德沃德,福克斯波罗、西屋、瑞恩、施耐德莫迪康、ABB、AB、西门子、摩托罗拉、GE发那科、安川、博世力士乐,ACSO,力士乐等各大品牌的DCS系统配件,机器人系统配件,大型伺服系统备件。

先介绍几点经验。
1、先通读一遍“系统手册”(不管能不能看懂,先了解个大概,以便学习编程时查找);
2、由位控逻辑入手,逐渐增加定时、计数等条件,把或、与、非关系理顺;
3、进而练习整数运算、实数运算、类型转换;
4、量程转换、PID调节回路的建立及P、I、D参数的理解(最好是有个物理回路验证,比如变频器+电机+测速传感器);
5、循环、顺序、跳转等程序控制(尽量避免跳转,非跳不可时也是跳的越近越好);
6、中断、通讯、位置控制....

本人以ABB工业机器人配件DSQC系列和Motorola MVME系列,GE 卡件 模块 驱动器系列为主攻。各位电工朋友可根据自己的条件选择适合自己的PLC品牌,由于PLC的基本框架大同小异,学会一种至于其它的学习起来也就简单了。