【判断题】【消耗次数:1】
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。
正确
错误
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相关题目
【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】 CPU226型PLC本机I/O点数为( )
①  14/10
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③  24/16
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③  44059
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【判断题】 CPU224型PLC本机I/O点数为14/10。
①  正确
②  错误
【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通道数表示,模拟量I/O点数用最大I/O点数表示。 ( )
①  正确
②  错误
【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。 ( )
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【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】 ( )是PLC主机通过串行通信连接远程I/O单元。
①  同为连接系统
②  下位连接系统
随机题目
【单选题】 There is an increasing _____to make movies describing violence.
①  strength
②  direction
③  tradition
④  trend
【单选题】 Information and opinion gap exercises have to have some content _____talking about.
①  worthwhile
②  worthily
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④  worthy
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①  went
②  go
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①  worked/ wouldn’t have failed
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④  disposed
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①  fragments
②  pieces
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①  were canceled
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③  having canceled
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【单选题】 _____, she led a life of complete seclusion.
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