IS200SPROH1A GE

IS200VRTDH1D
IS200VSVOH1B
IS200VTCCH1C
IS200VTURH2B
IS200VVIBH1C
IS200WNPSH1A
IS200WPDFH1A
IS200WROBH1A
IS200WROFH1A
IS200WSVOH1ACD
IS2020DRLYH1AA
IS2020JPDBG01

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描述

为了处理急需响应的输入信号,PLC有种种措施。不同的PLC措施也不完全相同,提高响应速度的效果也不同。一般的作法是采用输入中断,然后再输出即时刷新,即中断程序运行后,有关的输出点立即刷新,而不等到整个程序运行结束后再刷新。
这个效果可从两个方面来衡量:一是能否对几个输入信号作快速响应;二是快速响应的速度有多快。多数PLC都可对一个或多个输入点作快速响应,快速响应时间仅几个毫秒。性能高的、大型的PLC响应点数更多。
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