TSXFANA4P
MSK040C-0600-NN-M1-UP1-NNNN
1C31233G04
N0703FE-NMSE
要注意的是只用到一个PLSY指令，这是因为它的输出如所要求的那样，直接与四个电机中的每个相连(一个电机对应于一个窗户)。检测窗户位置为全开或全关，如果其中一个条件存在，与它对应的控制电机就关断。
教学与实习设备投入。在PLC课程的实践教学中，应把机械、电工、电子、液压、气动和计算机等知识与PLC技术进行有机地联系，扩大实习实训课时的比重，逐步加大学校相关设备的投入，建立较为完备的PLC技术仿真实训室，从而为“PLC仿真项目开发”的实训教学创造良好条件。教学实践证明，只有通过PLC仿真项目方面的实训，让学生亲自编程、实际接线和仿真调试，并对运行过程中所遇到的问题进行分析和改进，才能真正培养学生创新思维和综合职业能力，真正实现学生毕业后在PLC技术应用领域“零距离上岗”的终教学目标。
３)机型统一，其外部设备通用，资源可共享，易于联网通信，配上位计算机后易于形成一个多级分布式控制系统。
总之，PLC的编程语言是面向用户的，对使用者不要求具备高深的知识、不需要长时间的专门训练。
PLC的通信包括主机与远程I／O之间的通信、多台PLC之间的通信、PLC与其他智能控制设备(如计算机、变频器、数控装置)之间的通信。PLC与其他智能控制设备一起，可以组成“集中管理、分散控制”的分布式控制系统。
通用型PLC的硬件基本结构如图1所示，它是一种通用的可编程控制器，主要由中央处理单元CPU、存储器、输入/输出（I/O）模块及电源组成。
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