First,based on Siemens S7-200 series PLC sample,we carried on the programming analysis,determining pro-gram I/O address assignment,control requirements and functions.Then we employed “reference method”to design a control program based on FX2N series PLC with the same function as the sample program.This is not only a kind of pro-gramming method,but also a kind of study method,and much more a kind of effective method to solve practical prob-lems.If used in teaching,it can improve the students'various abilities and strengthen teaching effect.%首先对基于西门子 S7-200系列 PLC的示例程序进行分析，确定程序的输入/输出地址分配、控制要求及功能，然后再用“借鉴法”，设计出具有相同功能的基于 FX2 N 系列 PLC 的控制程序。这是一种编程方法，也是一种学习研究方法，更是一种解决实际问题的有效方法。如果用于教学，还能提高学生的多种能力，增强教学效果。
展开▼
