| “电气控制与PLC”课程中疑难指令的教学探讨 |
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| 引用本文： | 王榕生.“电气控制与PLC”课程中疑难指令的教学探讨[J].电气电子教学学报,2012(5):109-112. |
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| 作者姓名： | 王榕生 |
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| 作者单位： | 福州大学电气工程与自动化学院 |
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| 摘 要： | 本文针对欧姆龙CPM1A系列PLC的TR、微分与非微分指令形式、顺序控制步转换条件等教学难点进行了深入剖析。结合梯形图实例讨论了TR作用、指令的微分与非微分形式的意义、顺序控制步转换条件中上步控制位的作用及常用指令LD N容易忽视的问题。所作分析有益于克服PLC教学难点,提升教学效果。
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| 关 键 词： | PLC 梯形图 逻辑运算 |
Teaching Exploration on Difficult Instructions in Electrical Contol & PLC |
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| WANG Rong-sheng.Teaching Exploration on Difficult Instructions in Electrical Contol & PLC[J].Journal of Electrical & Electronic Engineering Education,2012(5):109-112. |
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| Authors: | WANG Rong-sheng |
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| Affiliation: | WANG Rong-sheng(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou 350108,China) |
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| Abstract: | This paper has thoroughly analyzed the difficult topics in teaching Omron CPM1A series PLC.Topics related to TR,differential and anti-differential instruction forms,and step transition conditions for sequence control are considered to be difficult portions.The paper also utilizes ladder diagrams and examples to illustrate TR function,meaning behind the differential and anti-differential instruction forms.It explicitly explains the action of previous step control bit among step transition conditions in sequence control,and highlights the easily-ignored problems in common LD N command.The result is beneficial and applicable in easing the teaching difficulties,improving teaching efficiency on PLC subject. |
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| Keywords: | programmable logic controller ladder diagram logic operation |
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