3E 033205L9000
3E 033205L9000
3E 033205L9000 3E 033205L9000 3E 033205L9000
PLC的工作情况。通过专用的PC/PPI电缆线将PLC与电脑联接，并利用专用的软件进行电脑编程和监控。
5、输入/输出扩展单元
I/O扩展接口用于将扩充外部输入/输出端子数的扩展单元与基本单元（即主机）连接在一起。
6、外部设备接口
此接口可将打印机、条码扫描仪,变频器等外部设备与主机相联，以完成相应的操作。
实验装置提供的主机型号有西门子S7-200系列的CPU224(AC/DC/RELAY)。输入点数为14，输出点数为10；CPU226(AC/DC/RELAY)，输入点数为26，输出点数为14。
PLC的发展历程
在工业生产过程中，大量的开关量顺序控制，它按照逻辑条件进行顺序动作，并按照逻辑关系进行连锁保护动作的控制，及大量离散量的数据采集。传统上，这些功能是通过气动或电气控制系统来实现的。1968年美国GM（通用汽车）公司提出取代继电气控制装置的要求，第二年，美国数字公司研制出了基于集成电路和电子技术的控制装置，首次采用程序化的手段应用于电气控制，这就是第一代可编程序控制器，称Programmable Controller（PC）。
个人计算机（简称PC）发展起来后，为了方便，也为了反映可编程控制器的功能特点，可编程序控制器定名为Programmable Logic Controller（PLC）。
上世纪80年代至90年代中期，是PLC发展最快的时期，年增长率一直保持为30~40%。在这时期，PLC在处理模拟量能力、数字运算能力、人机接口能力和网络能力得到大幅度提高，PLC逐渐进入过程控制领域，在某些应用上取代了在过程控制领域处于统治地位的DCS系统。
PLC具有通用性强、使用方便、适应面广、可靠性高、抗干扰能力强、编程简单等特点。PLC在工业自动化控制特别是顺序控制中的地位，在可预见的将来，是无法取代的。
2 PLC的构成
从结构上分，PLC分为固定式和组合式（模块式）两种。固定式PLC包括CPU板、I/O板、显示面板、内存块、电源等，这些元素组合成一个不可拆卸的整体。模块式PLC包括CPU模块、I/O模块、内存、电源模块、底板或机架，这些模块可以按照一定规则组合配置。
3 CPU的构成
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E/R-Module 16 kW 6SN1111-0AA00-0BV0
E/R-Module 36 kW 6SN1111-0AA00-0CV0
E/R-Module 16 kW 6SN1111-0AA00-0BV1
E/R-Module 36 kW 6SN1111-0AA00-0CV1
E/R-Module 55 kW 6SN1111-0AA00-0DV0
E/R-Module 80 kW 6SN1111-0AA00-0EV0
E/R-Module 120 kW 6SN1111-0AA00-0FV0
UE-Modul 5 kW 6SN1111-0AA01-1BA1
UE-Modul 10 kW 6SN1111-0AA01-1AA1
UE-Modul 28 kW 6SN1111-0AA01-1CA1
E/R-Module 16 kW 6SN1111-0AA00-1BV0
E/R-Module 36 kW 6SN1111-0AA00-1CV0
E/R-Module 16 kW 6SN1111-0AA00-1BV1
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E/R-Module 55 kW 6SN1111-0AA00-1DV0
E/R-Module 80 kW 6SN1111-0AA00-1EV0
E/R-Module 120 kW 6SN1111-0AA00-1FV0
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E/R-Modul 36 kW 6SL3000-0BE23-6DA0
E/R-Modul 55 kW 6SL3000-0BE25-5DA0
监控模块6SN1112-1AC01-0AA1
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电压控制模块6SN1111-0AB00-0AA0
脉冲电阻模块6SN1113-1AB01-0AB1
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6SL3000-0BE21-6AA0
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6SL3000-0BE23-6AA0
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6SL3000-0BE21-6AA0
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6SL3000-0BE23-6AA0
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6SL3000-0DE28-0AA1
6SL3100-1BE21-3AA0
6SL3000-0DE31-2AA1
6SL3100-1BE21-3AA0
6SN1111-0AA00-1BV0
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6SL3136-7TE31-2AA3
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6SN1113-1AA00-0DA0
