西門子S7-300 PLC模擬量轉(zhuǎn)換
所屬分類：技術(shù)論文
上傳者：serena
標簽： 西門子 S7-300 PLC
所需積分：1分積分不夠怎么辦？
文檔介紹： Analog Inputs and Outputs in an S7 PLC are represented in the PLC as a 16-bit integer. Over the nominal span of the analog input or output, the value of this integer will range between - 27648 and +27648. However, it is easier to use the analog values if they are scaled to the same units and ranges as the process being controlled. This applications tip describes methods for scaling analog values to and from engineering units.
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