【单选题】
86·86.根据电动机自动往返梯形图,下列指令正确的是___。
A. ·LDI X002
B. ORI Y002
C. AND Y001
D. ANDI X003
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答案
D
解析
暂无解析
相关试题
【单选题】
87·87.根据电动机自动往返梯形图,下列指令正确的是___。
A. LDI X002
B. AND X001
C. OR Y002
D. AND Y001
【单选题】
88.根据电动机自动往返梯形图,下列指令正确的是___。
A. LDI X000
B. AND X001
C. OUT Y002
D. ANDI X002
【单选题】
89.根据电动机自动往返梯形图,下列指令正确的是___。
A. LD X000
B. AND X001
C. ORI X003
D. ORI Y002
【单选题】
90.FX编程器的显示内容包括地址、数据、工作方式、___情况和系统工作状态等。
A. 位移储存器
B. 参数
C. 程序
D. 指令执行
【判断题】
1.PLC编程方便,易于使用。
A. 对
B. 错
【判断题】
2.FX2N系列可编程序控制器辅助继电器用M表示。
A. 对
B. 错
【判断题】
3.PLC不能应用于过程控制
A. 对
B. 错
【判断题】
4.PLC可以进行运动控制。
A. 对
B. 错
【判断题】
5.输出软元件不能强制执行。
A. 对
B. 错
【判断题】
6.PLC不能遥控运行。
A. 对
B. 错
【判断题】
7.PLC大多设计有掉电数据保持功能。
A. 对
B. 错
【判断题】
8.PLC程序可以检查错误的指令。
A. 对
B. 错
【判断题】
9.FX2N系列可编程序控制器的用户程序存储器为RAM型。
A. 对
B. 错
【判断题】
10.FXEN系列可编程序控制器的存储器包括ROM和RAM型。
A. 对
B. 错
【判断题】
11.可编程序控制器的程序由编程器送入处理器中的控制器,可以方便地重读出、检查与修改。
A. 对
B. 错
【判断题】
12.可编程序控制器的工作过程是并行扫描工作过程,其工作过程分为三个阶段。
A. 对
B. 错
【判断题】
13.可编程序控制器的工作过程是周期循环扫描工作过程,其工作过程主要分为三个阶段。
A. 对
B. 错
【判断题】
14.可编程序控制器停止时,扫描工作过程即停止。
A. 对
B. 错
【判断题】
15.可编程序控制器采用的是循环扫描工作方式。
A. 对
B. 错
【判断题】
16.可编程序控制器运行时,一个扫描周期主要包括三个阶段。
A. 对
B. 错
【判断题】
17.高速脉冲输出不属于可编程序控制器的技术参数。
A. 对
B. 错
【判断题】
18.I/O点数、用户存储器类型、容量等都属于可编程程序控制器的技术参数。
A. 对
B. 错
【判断题】
19.FX2N可编程序控制器DC输入型是高电平有效。
A. 对
B. 错
【判断题】
20.FX2N。可编程序控制器DC输入型是低电平有效。
A. 对
B. 错
【判断题】
21.FX2N可编程序控制器有4种输出类型。
A. 对
B. 错
【判断题】
22.FX2N可编程序控制器晶体管输出型可以驱动直流型负载。
A. 对
B. 错
【判断题】
23.可编程序控制器晶体管输出型可驱动动直流型负载。
A. 对
B. 错
【判断题】
24.FX2N-40ER表示F系列扩展单元,输入和输出总点数为40,继电器输出方式。
A. 对
B. 错
【判断题】
25.PLC的选择是PLC控制系统设计的核心内容。
A. 对
B. 错
【判断题】
26.PLC的输入采用光电耦合提高抗干扰能力。
A. 对
B. 错
【判断题】
27.FX2N系列可编程序控制器采用光电耦合器进行输入信号的隔离。
A. 对
B. 错
【判断题】
28.PLC之所以具有较强的抗干扰能力,是因为PLC输入端采用了光电耦合输入方式。
A. 对
B. 错
【判断题】
29.在一个PLC程序中,同一地址号的线圈可以多次使用。
A. 对
B. 错
【判断题】
30.PLC编程时,主程序可以有多个。
A. 对
B. 错
【判断题】
31.PLC编程时,子程序至少要一个。
A. 对
B. 错
【判断题】
32.PLC中辅助继电器定时器计数器的触点可使用多次。
A. 对
B. 错
【判断题】
33.PLC的输入和输出继电器的触点可使用无限次。
A. 对
B. 错
【判断题】
34.PLC梯形图编程时,并联触点多的电路应放在左边。
A. 对
B. 错
【判断题】
35.FX2N PLC共有256个定时器。
A. 对
B. 错
【判断题】
36.对于图示的PLC梯形图,程序中元件安排不合理。
A. 对
B. 错
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