1C31169G02

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描述

1C31169G02
在电路图设计中我们早已经在使用针对控制对象的绘图方式,即把基本的主配送电路和PLC配置完成后,我们会针对每一个现场控制对象如:电机、阀、气缸等控制对象绘制电路图,他们的电源来自主配送电路,控制和反馈与PLC建立连接,硬件连锁根据实际情况调整,一个个控制对象就象搭建积木一样有组织的堆积起来,同样的,编程也是针对一个个控制对象使用相应的标准控制块实现就可以,把程序控制细节实现了有效的封装,使程序看起来简洁和易于维护,而好的设计可以把原理图和程序进行很好的关联,甚至于做到一对一的关系,如原理图中的一个控制对象可以在程序中找到相应的FB调用与之对应,真正做到面向控制对象编程。
可能有人疑虑,PLC编程大部分是步进编程,这一个个标准块都是针对控制对象的,那控制顺序如何实现呢?这就要求编写专门的顺序控制FB块,或者使用Siemens现成的Graph7来实现,这点与一般编程没什么差别。
现在的工业控制领域有很多程序高手,他们很精通算法,也有着自己的编程理念,当我和一些人探讨标准化时,他们认识到标准化的高效性,但认为这样无法体现自己的编程水准,是的,如上所述作为应用层面的程序设计是不要很高的编程水平,但要想想,一个人难道能一辈子去搞现场调试吗?若想体现自己的价值,可以从事标准编程。我更希望他们能花一点时间研究程序架构,各行各业,真正的大师是系统架构设计者,编程小技巧只不过是为好的架构锦上添花。

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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!
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。