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没有基础，何来进阶，知识体系环环相扣，没有夯实的基础，你就会碰到这样那样难以解决的问题。所以，对于与自控相关的基础内容，大家应该拿出时间去熟悉掌握。本文整理了些关于浮点数的内容，以供交学。
1.浮点数描述浮点数，通俗的讲就是显示格式具有小数点的数，如1.234、1234.0（十进制形式）。计算机中浮
...
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1.描述对于PLC开关量输入模块要么连接的是“无源”干接点信号，如继电器触点、位置开关；要么连接的就是”有源”开关器件信号，如接近开关、编码器。对于“无源”干接点信号，其对于电流没有流入、流出之分，公共端0V和24V的开关量输入模块都可以连接，所以不存在选型问题。而“有源”开关器件信号就不一定了，那
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WINCC V7.5支持云连接WINCC V7.5版新增了云连接功能，可以自动将变量从 WinCC 站传送到云。可连接到Amazon Web Services (MQTT)、Microsoft Azure (MQTT) 云提供商，详细信息可查看WINCC帮助。
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