例如改变指令的输入/输出参数通常是字对字改变，在线时字对字改变可直接下载到 PLC，不需要下载全部逻辑。Other Logic Changes ：在线时逻辑修改已改变原程序大小。例如增加新逻辑功能或者增加逻辑行。当完成其它逻辑改变，可以在 PLC 运行状态下载程序。 注意：某些逻辑类型改变，必须在 PLC Stop（停止）下载程序。

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