描述
处理速度与用户程序的长度、CPU处理速度、软件质量等有关。目前，PLC接点的响应快、速度高，每条二进制指令执行时间约0.2～0.4Ls，因此能适应控制要求高、相应要求快的应用需要。扫描周期（处理器扫描周期）应满足：小型PLC的扫描时间不大于0.5ms/K；大中型PLC的扫描时间不大于0.2ms/K。
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National Instruments NI PXI-6704 32 Channel Analog Out
National Instruments PCI-6280, 18-Bit, M-Series DAQ
National Instruments PXI-8464 CAN/XS, Series 2, 1-Port
Controller Area Network (CAN), Series 2, High-Speed
National Instruments Timing Digital I/O Board PCI-6602
National Instruments Interface Board PCI-MXI-2 working
National Instruments SC-2040 PCB 182665B-01 New
National Instruments SCXI-1001 Control Cage working
