EMIS可编程控制器CPU模块三个指示灯是:()。A、SFB、RUNC、STOPD、TERM
EMIS可编程控制器CPU模块三个指示灯是:()。
- A、SF
- B、RUN
- C、STOP
- D、TERM
相关考题:
The term “moderate speed” was previously interpreted as meaning a speed which would enable a vessel ______ within half the range of visibility.A.stoppingB.being stoppedC.to stopD.to be stopped
The term "moderate speed" was previously interpreted(解释) as meaning a speed which would enable a vessel ______within half the range of visibility.A.stoppingB.being stoppedC.to stopD.to be stopped
关于可编程控制器PLC的I/O接口模块,下列描述哪一项是错误的?( )(A) I/O接口模块是PLC中CPU与现场输入、输出装置或其他外部设备之间的接口部件(B)PLC系统通过I/O模块与现场设备连接,每个模块都有与之对应的编程地址(C)为满足不同需要,有数字量输入输出模块、模拟量输入输出模块、计数器等特殊功能模块(D) I/O接口模块必须与CPU放置在一起
ESD PLC主要由以下几部分组成:()A、APLC-5/20E可编程控制器、可编程控制器电源模块(1771-P4R)和输入/输出模块B、A/BPLC-5/20E可编程控制器、电源模块(1771-P4R)、后备通信模块(1785-BCM)模块和输入/输出模块C、BPLC-5/20E可编程控制器、电源模块(1771-P4R)、后备通信模块(1785-BCM)模块和输出模块D、APLC-5/20E可编程控制器、可编程控制器电源模块(1771-P4R)、后备通信模块(1785-BCM)模块和输入模块
可编程控制器简称CPU。