说明： 用Labview实现字符串在上位机和下位机间的通讯。发送字符串时，要先运行下位机的程序，不带地址，收数据的机器。总之,要先运行不带地址的机器。 (Using Labview to achieve the string in the upper and lower inter-machine communication. Send string when the first-bit machine running under the procedure, non-address data collection machine. In short, the first run without the address of the machine.)
