描述
由扫描工作方式引起的滞后时间最长可达两个多扫描周期。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
NATIONAL INSTRUMENTS VXI-MXI-2 VXI C SIZE CARD
National Instruments SCXI-1104 32-Channel Input Module
National Instruments NI PXI-7334 Motion Controller
One-day shipping available
NATIONAL INSTRUMENTS PCI-6025E DAQ CARD/ SH100100 CABLE
LOT NATIONAL INSTRUMENTS 4-AXIS MOTION CONTROL MODULES
National Instruments 6035E PCI card
National Instruments NI PCI-6220 Card TESTED
National Instruments NI PCI-6031E Data Acquisition Card
NATIONAL INSTRUMENTS 181435C-06 AT-AO-6/10 BOARD
NATIONAL INSTRUMENTS DAQCard-6024E for PCMCIA
