品牌
经销商厂商性质
厦门市所在地
490NAA27102 490NAA27102
这时,要多等待一个周期,PLC的输入映射区才能接受到这个新的输入信号。对一般的输入信号,这个延迟虽可以接受,但对急需响应的输入信号,就不能接受了。对急需处理的输人信号延迟多长时间PLC能予以响应,要另作要求。为了处理急需响应的输入信号,PLC有种种措施。
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