★ 不要因为别人的不好而影响了自己做事情时候的心情,也不要因外界的不如人意而影响了一生的幸福快乐。想想美好的一面,心情也会是很快乐的。
(1)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:
FURNAS ELECTRIC CO 3TX7109-5BF13C
FURNAS ELECTRIC CO 3TX7-110-5JF13 FURNAS ELECTRIC CO 3TX7-111-3DF13C FURNAS ELECTRIC CO 3TX7111-3LC03 FURNAS ELECTRIC CO 3TX7-111-3LF13 FURNAS ELECTRIC CO 3TX7112-1DC03C FURNAS ELECTRIC CO 3TX7112-1DC13C FURNAS ELECTRIC CO 3TX7112-1FC03C FURNAS ELECTRIC CO 3TX7112-1FF13C FURNAS ELECTRIC CO 3TX7-112-1LC03 FURNAS ELECTRIC CO 3TX7-112-1LC13 FURNAS ELECTRIC CO 3TX7112-1NC03 FURNAS ELECTRIC CO 3TX7-112-1NF13FURNAS ELECTRIC CO 3TX7-113-5FF13 FURNAS ELECTRIC CO 3TX7114-5LF13 FURNAS ELECTRIC CO 3TX7-115-5NC13 FURNAS ELECTRIC CO 3TX7-115-5NF13 FURNAS ELECTRIC CO 3TX7117-5PC03 FURNAS ELECTRIC CO 3TX7117-5PF13FURNAS ELECTRIC CO 3TX7119-5LF13 FURNAS ELECTRIC CO 3TX7-130-0AF13 FURNAS ELECTRIC CO 3TX7-130-0CB03 FURNAS ELECTRIC CO 3TX7-133-0SJ04 FURNAS ELECTRIC CO 3TX7144-1E2 FURNAS ELECTRIC CO 3TX7-144-1E4 FURNAS ELECTRIC CO 3TX7-144-1E7 FURNAS ELECTRIC CO 3TX7144-1E8FURNAS ELECTRIC CO 3TX7144-1L1 FURNAS ELECTRIC CO 3TX7-144-1L2 FURNAS ELECTRIC CO 3TX7-144-1L4 FURNAS ELECTRIC CO 3TX7-144-4E3 FURNAS ELECTRIC CO 3TX7-144-4E4 FURNAS ELECTRIC CO 3TX7-144-4E6 FURNAS ELECTRIC CO 3TX7402-3A FURNAS ELECTRIC CO 3TX7-402-3J FURNAS ELECTRIC CO 3TX7462-3G