在安装了版本号511(匹配Labview 8.2)的VISA驱动程序后, 就可以利用工具箱中封装好的函数VISA Configure Serial Port.VI,VISA Write.VI,VISA Read.VI和VISA Close.VI对变频器进行相应的操作[1]. 三菱变频器针A700对串口通信提供了两种协议: 三菱变频器专用协议和ModbusRTU通讯协议. 针对三菱变频器, 使用三菱变频器...
but on the host computer a serial COM port is created). Using the controller in National Instruments’ LabVIEW™ software is as simple as sending appropriate commands over the serial port. ASI provides an instrument
The loop continuously monitors the received signal power and adjusts the gain for the RX path accordingly. It reports the status of the radio frame synchronization on the FPGA and updates the overflow indicators on the front panel. This loop also reads the PDSCH decoding status (DL, UE host ...
LabVIEW和FPGA的串口通信系统设计与实现
For example, you might have one portion of the block diagram continuously generating an internal signal. Use a Digital Enable or Digital Port Enable function in another portion of the block diagram to independently control when the internal signal is actually driven out to an external device. ...
The metric computation is running in a streaming mode and fills the traceback buffer continuously, but the actual decoding with evaluation of the traceback memory is initiated only every traceback length time instances. Hence, it is necessary to flush the metric computation with artificial softbits...
This directory also contains a VI called readme.vi that serves as a guide to the examples. • serpdrv—This file serves as part of LabVIEWs interface to serial port communication. This file must be in the same directory as vi.lib. © National Instruments Corporation 1-7 LabVIEW User ...