COBRA 92-1774AT
问：我用的CPU是S7-200CN 224XP。请问在没有电池的情况下数据能保存多长时间？
答：你说的问题如果没有电池的话，正常是4天数据就没有了，但程序还在，不会消失，消失的只是诸如时间，计数器的值。这是没有设定永久保存的数据存贮时间。

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