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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。

Bently Nevada 3300 Series Eccentricity Monitor 3300/40-03-01-00-00-00

Bently Nevada 3300 Series Eccentricity Monitor 3300/40-03-01-01-00-00

Bently Nevada 3300 Series Multi-Channel Diagnostic Instrument 3300/90-00-00

Bently Nevada 3300 Series Power Supply 3300/10 78422-01 Rev. K

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Bently Nevada 3300 XL 8MM Vibration Probe 330101-00-70-10-02-00

Bently Nevada 3300/15 Dual Vibration Monitor 3300/15-04-01-01-00-00-00

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Bently Nevada 3500 POSTTTION I/O Module 135145-01

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Bently Nevada XY/GAP Dual Vibration Monitor 3300/16-03-01-00-00-00-01

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Berger Lahr TLD134 F Inverter 0063413400004

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Betron 10770586 Stepper Motor Controller Board

Betron 214739 I/O Board

Betron 214740 I/O Board

Betron TE-H334-B001-04 Main Board01.06 40T00242 01

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Bettis 139662 Pneumatic Actuated Valve DS0200B2A04K22K0

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Bikor Corporation ACX631 550W Power Supply Module Rev. E

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BILZ WFLK 115ak a 65/40

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Bimba 1711-DXNR Pneumatic Cylinder1-1/2" Bore11" Stroke

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Bimba BF-049 72-B Air CylinderSS3/4" Bore x 9" Stroke

Bimba BFT-174-DNR Pneumatic Cylinder1-1/2" Bore4" Stroke

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Bimba PC-3115-DXPKEE1 Air Cylinder2" Bore15" Stroke

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Bimba SR-5010-D Air Cylinder SS2-1/2" Bore x 10' Stroke

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Bindicator Model R Level Detector4-VaneSP-DT120VAC4W

Bindicator RF9C4X1A Level Sensor 120VAC 24" L

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Bizerba 5530400405 Mulit-Function Keypad Assembly

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