本代码使用VB.net开发的三菱FX3U系列PLC的串口通讯，做多连续读取20个浮点数，可生成DLL文件，供程序调用-Mitsubishi FX3U series PLC The code developed using VB.net serial communication, to do more than float continuously read 20, can generate DLL files, the program calls for