福建中立恒自动化设备有限公司
输入/输出滞后时间又称系统响应时间,是指PLC部输入信号发生变化的时刻至它控制的有关外部输出信号发生变化的时刻之间的时间间隔,它由输入电路滤波时间、输出电路的滞后时间和因扫描工作方式产生的滞后时间这三部分组成。
输入模块的RC滤波电路用来滤除由输入端引入的干扰噪声,因外接输入触点动作时产生的抖动引起的不良影响,滤波电路的时间常数决定了输入滤波时间的长短,其典型值为10ms左右。
输出模块的滞后时间与模块的类型有关,继电器型输出电路的滞后时间一般在10ms左右;双向晶闸管型输出电路在负载通电时的滞后时间约为1ms,负载由通电到断电时的滞后时间为10ms;晶体管型输出电路的滞后时间一般在1ms以下。
PLC总的响应延迟时间一般只有几十ms,对于一般的系统是无关紧要的。要求输入输出信号之间的滞后时间尽量短的系统,可以选用扫描速度快的PLC或采取其他措施。
Liebert assy no. 415761G2 Rev 22
Cybeq systems 0125-0494 robot interface board
Rofin 101105117-00011 Adjustable Mode Aperture 1064nm
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ASM HiPEC 03-20717 Rev C-P1 02-15467 rev A
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JK Microsystems 175-0091-02 60-0004-B
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Applied Biosystems 4368915 B.1 24V 130W 055127F1
FSC 10201/2/1 11501
FSC 10101/2/1 11000
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Opal Fine Shift 70512529000 bd
Synrad P/N: 100-16090-02 RF Driver III rev C
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BORI JUE301194-D JUE301195 ICP
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Matrox M2-MC/4B 751-01 rev A frame grabber
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ASML 4022.471.50434
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