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。
以下链接皆有货
VME BOARD 960K27781B006336 SSCI XIC2R 140E63582B
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BR X20 DS 1119 REV. G0
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ORBOTECH 0398362B-T
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VISION BIO SYSTEMS PWA COMMS INTERFACE 17.5529.E01
VENUS CONCEPT DRIVER BOARD PC160014 REV C
VENUS CONCEPT PC160000E
VENUS CONCEPT PC160000D
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YASKAWA JANCD-NIO30B-1 F352063-1 JANCD-NIF30B-1 F352061-1 CARD
PHILIPS Brilliance CT Scanner Parts P/N 459800312962 REV B 459800467342 REV C
PHILIPS Brilliance CT Scanner Parts P/N 459800312961 REV A 459800467341 REV A
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NIKON OBJECTIVE LANS RT-U 4103 RTU4103
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NIKON OBJECTIVE LANS RT-U 4202 RTU4202
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V-Tex ROLLCAM V113464 3D80-001812-V1 DOOR SLIT VALVE
V-Tex ROLLCAM V113465 3D80-001812-V1 DOOR SLIT VALVE
V-Tex ROLLCAM V153482 DOOR SLIT VALVE
Tenor MTEC05 EXPDRV Circuit Board
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V-Tex ROLLCAM V112469 3D80-001812-V1 DOOR SLIT VALVE
ERARDTLEIMER DR_1275 MAXON MOTOR 205654
NATIONAL INSTRUMENTS PCI-6509 DIGITAL I/O DEVICE CARD 778792-01
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