电池替换/存储器保护要点每个PLC的应用程序都不同，在应用策略上每个用户都有自己个人的因素，当计划电池替换存储器保护的策略时有几个要素需要考虑:是否是紧急应用?当PLC掉电时数据是否不允许丢失?如果是这样的话

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