S7-300_PLC模拟量输入输出量程转换教程.pdf

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1、S7-300/400PLC模拟量输入/输出的量程转换SLCA&DCSMarch,2005模拟量输入/输出量程转换1模拟量输入/输出量程转换的概念.......................................................................................32S7-300/400PLC模拟量输入/输出模板..............................................................................32.1需要使用的模板.......

2、...................................................................................................32.2涉及的信号类型..........................................................................................................33STEP7中模拟量输入/输出的编程.............................................

3、........................................33.1FC105/FC106在哪里.................................................................................................33.2FC105/FC106功能描述.............................................................................................53.2.1FC105功能

4、描述....................................................................................................53.2.2FC106功能描述....................................................................................................53.3FC105/FC106参数定义............................................

5、.................................................63.3.1FC105的参数定义...............................................................................................63.3.2FC106的参数定义................................................................................................63.4例子程序

6、.....................................................................................................................73.4.1FC105例子程序....................................................................................................73.4.2FC106例子程序.................................

7、...................................................................8SLCA&DCSPage2of8模拟量输入/输出量程转换1模拟量输入/输出量程转换的概念实际的工程量，如压力、温度、流量、物位等要采用各种类型传感器进行测量。传感器将输出标准电压、电流、温度、或电阻信号供PLC采集，PLC的模拟量输入模板将该电压、电流、温度、或电阻信号等模拟量转换成数字量——整形数(INTEGER)。在PLC程序内部要对相应的信号进行比较、运算时，常需将该信号转换成实际物理值（对应于传感器的量程）。而经

8、程序运算后得到的结果要先转换成与实际工程量对应的整形数，再经模拟量输出模板转换成