MVME117A MOTOROLA 循环扫描方式

MOTOROLA MVME147-013
MOTOROLA MVME162-012
MOTOROLA MVME162-012
MOTOROLA MVME162-012
MOTOROLA MVME162-023A
MOTOROLA MVME162-10
MOTOROLA MVME162-13
MOTOROLA MVME162-512
MOTOROLA MVME162-512A
MOTOROLA MVME162-512A
MOTOROLA MVME162-522A
MOTOROLA MVME162-522A 01-W3960B/61C
MOTOROLA CPCI-6020TM
MOTOROLA MVME162-210
MOTOROLA MVME2301-900

Description

  PLC的工作方式:采用循环扫描方式。在PLC处于运行状态时,从内部处理、通信操作、程序输入、程序执行、程序输出,一直循环扫描工作。注意:由于PLC是扫描工作过程,在程序执行阶段即使输入发生了变化,输入状态映象寄存器的内容也不会变化,要等到下一周期的输入处理阶段才能改变。循环扫描过程如下

VIASYS Mainboard 52130A PCBA MAIN VELA Critical care

GE LOGIQ e Basic Compounding CWD Software Certificate

Air Liquide DIVA ARM 4.20 MASTER Rosemount 3051 sensor

Agilent 880957-809 ZORBAX PSM 3000 Analytical NEW