描述
PLC中的定时器（T）相当于继电器控制系统中的通电型时间继电器。它可以提供无限对常开常闭延时触点。定时器中有一个设定值寄存器（一个字长），一个当前值寄存器（一个字长）和一个用来存储其输出触点的映象寄存器（一个二进制位），这三个量使用同一地址编号。但使用场合不一样
New National Instruments DAQCard-6036E 16-Bit,200 kS/s
National Instruments NI PXI-5600 Card
National Instruments NI PCI-1408 Card
National Instruments NI PCI-6518 I/O Card
National Instruments AT-MIO-16X 16-Bit DAQ Board
TEKTRONIX iVIEW CABLES NATIONAL INSTRUMENTS GPIB-USB #2
TEKTRONIX iVIEW CABLES NATIONAL INSTRUMENTS GPIB-USB #3
NATIONAL INSTRUMENTS GPIB-RS232 / GPIB-SERIAL CONVERTER
National Instruments PCI-6221 16-Bit, 250 kS/s, 16 Ana
with SCB-68 Shielded Connector and SHC68-68-EPM cable
National Instruments NI PXI-6071E DAQ Board
