【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点数表示,模拟量I/O点数用最大I/O通道数表示。 ( )
正确
错误
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相关题目
【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( )
①  14/10
②  8/16
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
③  EM223
④  EM243
【判断题】 泵站的数据采集一般含开关量,模拟量和脉冲量().
①  正确
②  错误
随机题目
【单选题】 Wealthy ____ he was, the governor would not spend a penny on such things.
①  as
②  if
③  though
④  however
【单选题】 —Guest: Oh, it’s ten o’clock. I’d better go now.—Host: ____.
①  OK. Please walk slowly and take care.
②  Why do you want to go now? Don’t you want to stay?
③  Yeah, it’s really late. Why not immediately?
④  Won’t you stay for another cup of coffee?
【单选题】 Youhavetopaytohavethebooksprinted, ____ canbequiteexpensive.
①  which
②  it C. that D. this
③  that
④  this
【单选题】 Early to bed and early to rise ____ a man healthy, wealthy and wise. ?
①  make ?
②  had made ?
③  makes ?
④  will make?
【单选题】 People often ____ the old days ____good times, and seem to forget the hardship they suffered.
①  hold--back
②  associate--with
③  put--down
④  turn--out
【单选题】 This is the ____ photo I have ever taken.
①  worse
②  better
③  best
④  most worst
【单选题】 ____ these honors he received a sum of money.
①  Except
②  But
③  Besides
④  Outside
【单选题】 Before taking off, they were asked to ____ their seat-belts.
①  fast
②  wide
③  focus
④  fasten
【单选题】 In HangzhouMr. Green was so struck by____ beauty of ____ nature that he stayed for another night. ?
①  /; / ?
②  /; the ?
③  the; / ?
④  the; the?
【判断题】 <img src=http://huaweicloudobs.ahjxjy.cn/db7e488fc9e00874c3c04fefca18a12c.png/>
①  正确
②  错误