叙述了PLC的串行通讯技术及基本应用，利用VB编程。

PLC serial communication technology find its basic application by VB was discussed in this paper.

youdao

叙述了PLC的串行通讯技术及基本应用，利用VB编程。

PLC serial communication technology find its basic application by VB was discussed in this paper.

youdao