【单选题】【消耗次数:1】
PLC的输入和输出量有开关量和模拟量两种。开关量I/O用最大I/O通道数表示,模拟量I/O点数用最大I/O点数表示。 ( )
正确
错误
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【单选题】 PLC的输入和输出量有开关量和模拟量两种。开关量I/O用最大I/O点数表示,模拟量I/O点数用最大I/O通道数表示。 ( )
①  正确
②  错误
【单选题】 PLC的输人和输出量有开关量和模拟量两种。开关量I/ 0用最大I/ 0点数表示,模拟量I/ 0点数用最大I / 0通道数表示。( )
①  正确
②  错误
【单选题】 PLC的I/O点数是指_______。
①  输出信号个数
②  输入信号个数
③  输入信号个数+输出信号个数
④  输入信号个数-输出信号个数
【单选题】 I/O总点数是指输入信号和()的数量。
①  输出信号
②  存储信号
【判断题】 I/O点数是选择PLC的重要依据之一。当系统的I/O点数不够时,必须重新需用其他型号的PLC。
①  正确
②  错误
【单选题】 CPU226型PLC本机I/O点数为( )
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③  24/16
④  14/16
【单选题】 CPU226型PLC本机I/O点数为( )
①  14/16
②  44118
③  44059
④  24/16
【判断题】 I/O点数指可编程控制器输入点数和输出点数的总和。
①  正确
②  错误
【单选题】 如需要3路模拟量输入1路模拟量输出,在S7-200系列PLC中应选( )模块。
①  EM222
②  EM235
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