DS3800NTCF1A1A 可编程逻辑控制器

DS200GASCF1AFB
DS200GASCF1AFE
DS200GASCF1BEL
DS200GASCF1BEM
DS200GASCF1BGB
DS200GASCF1BGC
DS200GASCF1BGD
DS200GASQF1AEJ
DS200GASQF1AEL
DS200GASQF1AEM
DS200GASQF1AEP

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描述

在程序执行的过程中如果使用立即I/O指令则可以直接存取I/O点。即使用I/O指令的话,输入过程影像寄存器的值不会被更新,程序直接从I/O模块取值,输出过程影像寄存器

当扫描用户程序结束后,可编程逻辑控制器就进入输出刷新阶段。在此期间,CPU按照I/O映象区内对应的状态和数据刷新所有的输出锁存电路,再经输出电路驱动相应的外设。这时,才是可编程逻辑控制器的真正输出。

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