选择串口资源和要执行的操作。如果所有的选择，虚拟仪器将数据写入第一，读取数据，然后关闭签证会话打开的端口。这个VI会等待指定的字节数是在收到端口直到超时时间见面。只有指定的字节数将阅读除非读结束于终止字符。终止字符可以启用和设置。同时，设置所需的输入缓冲区的大小来运行示例之前。-Select the serial port resources and operations to be performed. If all of the options, the first virtual instrument to write data, read data, and then close the session open ports visa. This VI will wait the specified number of bytes in the receive port until timeout meet. Only a specified number of bytes read will read until the end in termination character. You can enable and set the termination character. Meanwhile, before setting the input buffer size required to run the sample.