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针对实际使用中出现的PLC的CPU中数据区的数据不能长期存储的问题,以西门子公司的S7-200系列PLC为例,总结了解决数据易失问题的存储方法,并对每种数据存储方法进行了详细说明。
In view of the fact that the data in the data area of the PLC in the actual PLC can not be stored for a long time, taking the S7-200 series PLC of Siemens Company as an example, the storage methods for solving the data volatile problem are summarized and the methods for storing each kind of data Described in detail.